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1.
Diabetes Obes Metab ; 22(4): 480-491, 2020 04.
Artigo em Inglês | MEDLINE | ID: mdl-31696603

RESUMO

AIMS: To assess the pharmacokinetic (PK) and pharmacodynamic characteristics of VI-0521, a fixed-dose combination of immediate-release phentermine (PHEN) and extended-release topiramate (TPM) in adolescents aged 12 to 17 years with obesity, and to report weight loss and adverse events using this drug combination. MATERIALS AND METHODS: This was a multicentre, randomized, double-blind, parallel-design, placebo-controlled study in adolescents with obesity. A total of 42 adolescents were randomly assigned in a 1:1:1 ratio to placebo, or to a mid-dose (PHEN/TPM 7.5 mg/46 mg), or a top-dose (PHEN/TPM 15 mg/92 mg) of VI-0521. A total of 26 adolescents were included in the PK analysis (14 from the mid-dose group and 12 from the top-dose group). RESULTS: On day 56, arithmetic means of terminal elimination half-life, apparent clearance (CL/F) and apparent central volume of distribution (Vc/F) were consistent across dose levels for both PHEN and TPM. Arithmetic means of CL/F and Vc/F for PHEN and TPM administered as a combination in adolescents with obesity were within 10% to 30% of those previously assessed in adults with obesity enrolled in phase II and III studies. A higher proportion of adolescents in both the mid- and top-dose groups (13.3% and 50.0%, respectively) compared with placebo (0.0%) reached ≥5% weight loss at day 56. The least squares (LS) mean change in systolic blood pressure from baseline to day 56 was -5.2 mmHg for the placebo group, -2.5 mmHg for the mid-dose group, and - 5.5 mmHg for the top-dose group. The LS mean change in diastolic blood pressure from baseline to day 56 was -2.4 mmHg for the placebo group, +3.8 mmHg for the mid-dose group, and + 2.0 mmHg for the top-dose group. Participants in the top-dose group had increases in heart rate from baseline of 4.1 bpm, while participants in the mid-dose group experienced a mean decrease in heart rate of 4.5 bpm at day 56. Both PHEN/TPM dose combinations were safe and well tolerated. CONCLUSIONS: Treatment of adolescents with obesity using a fixed-dose combination of PHEN/TPM for 8 weeks resulted in exposure to PHEN and TPM that was comparable to that observed in adults, statistically significant weight loss, and a tolerable safety profile. These data indicate that both mid- and top-dose levels are appropriate for longer-term safety and efficacy studies in adolescents.


Assuntos
Fármacos Antiobesidade , Adolescente , Fármacos Antiobesidade/efeitos adversos , Criança , Método Duplo-Cego , Frutose/efeitos adversos , Humanos , Obesidade/complicações , Obesidade/tratamento farmacológico , Fentermina/efeitos adversos , Topiramato
2.
Brain Inj ; 31(2): 221-229, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-28067551

RESUMO

OBJECTIVES: To assess emotion recognition from dynamic facial, vocal and musical expressions in sub-groups of adults with traumatic brain injuries (TBI) of different severities and identify possible common underlying mechanisms across domains. METHODS: Forty-one adults participated in this study: 10 with moderate-severe TBI, nine with complicated mild TBI, 11 with uncomplicated mild TBI and 11 healthy controls, who were administered experimental (emotional recognition, valence-arousal) and control tasks (emotional and structural discrimination) for each domain. RESULTS: Recognition of fearful faces was significantly impaired in moderate-severe and in complicated mild TBI sub-groups, as compared to those with uncomplicated mild TBI and controls. Effect sizes were medium-large. Participants with lower GCS scores performed more poorly when recognizing fearful dynamic facial expressions. Emotion recognition from auditory domains was preserved following TBI, irrespective of severity. All groups performed equally on control tasks, indicating no perceptual disorders. Although emotional recognition from vocal and musical expressions was preserved, no correlation was found across auditory domains. CONCLUSIONS: This preliminary study may contribute to improving comprehension of emotional recognition following TBI. Future studies of larger samples could usefully include measures of functional impacts of recognition deficits for fearful facial expressions. These could help refine interventions for emotional recognition following a brain injury.


Assuntos
Concussão Encefálica/psicologia , Lesões Encefálicas Traumáticas/psicologia , Emoções , Expressão Facial , Música/psicologia , Reconhecimento Psicológico , Adulto , Reconhecimento Facial , Humanos , Pessoa de Meia-Idade , Testes Neuropsicológicos , Adulto Jovem
3.
Br J Clin Pharmacol ; 81(1): 148-60, 2016 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-26345283

RESUMO

AIM: The aim of the present study was to evaluate the pharmacokinetics of bevacizumab and various dosing strategies for this agent in paediatric patients. METHODS: Data were collected from 232 paediatric patients (1971 concentrations) in five studies, with a wide range of age (0.5-21 years), body weight (BWT; 5.9-125 kg), and regimens (5-15 mg kg(-1) biweekly or triweekly). Data from 152 patients (1427 concentrations) and 80 patients (544 concentrations) were used for model building and external validation, respectively. Steady-state exposure was simulated under BWT-based, body surface area (BSA)-based, ideal body weight (IBW)-based, and tier-based doses. NONMEM and R were used for analyses. RESULTS: Typical estimates of clearance, central volume of distribution (V1), and median half-life were 9.04 ml h(-1) , 2851 ml, and 19.6 days, respectively. Clearance decreased with increasing albumin. Clearance and V1 increased with BWT and were higher in male patients. Clearance and V1 were lower in children with primary central nervous system (CNS) tumours than in children with sarcomas, resulting in 49% higher trough (C min) and 29% higher peak (Cmax) concentrations. BWT-adjusted clearance and V1 remained unchanged across ages. Paediatric C min was similar to adult C min under all dosing strategies. Paediatric Cmax exceeded adult Cmax under tier-based doses. CONCLUSIONS: BWT-adjusted pharmacokinetic parameter estimates in paediatric patients were similar to those in adults, and similar across ages. Bevacizumab exposure was higher in children with primary CNS tumours than in children with sarcomas. BSA-based, IBW-based, and tier-based doses offered no substantial advantage over the BWT-based dose currently used in adults for bevacizumab. Given the similarity in pharmacokinetics among many monoclonal antibodies, this may help to develop practical paediatric dosing guidelines for other therapeutic antibodies.


Assuntos
Inibidores da Angiogênese/administração & dosagem , Bevacizumab/administração & dosagem , Neoplasias/tratamento farmacológico , Adolescente , Bevacizumab/farmacocinética , Peso Corporal , Criança , Pré-Escolar , Humanos , Lactente , Modelos Biológicos , Guias de Prática Clínica como Assunto , Adulto Jovem
4.
Arts Health ; 16(1): 89-109, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-37599443

RESUMO

BACKGROUND: Music is increasingly used with youths in health and psychosocial interventions. We conducted a scoping review with the aim to provide an overview of the current available evidence on music intervention for youth in mental health settings, to inform practice and further research. METHODS: Three databases (PsycINFO, PubMed and CINAHL) were surveyed. Using the PRISMA review method, 23 studies met inclusion criteria. RESULTS: Young people aged from 4 to 25 years old with various mental health conditions participated in music interventions. Music therapy was the most investigated (71%). Improving social skills was the most frequent therapeutic aim addressed. Music interventions are mostly appreciated by the participants, but it is difficult to make conclusions about their effectiveness because of the heterogeneity of research designs and the limited current state of research. CONCLUSION: Music interventions appear to represent a promising complementary approach to usual psychiatric care, but further standardised research is necessary to continue investigating their therapeutic effects.


Assuntos
Transtornos Mentais , Musicoterapia , Música , Adulto , Criança , Adolescente , Humanos , Pré-Escolar , Adulto Jovem , Musicoterapia/métodos , Saúde Mental , Transtornos Mentais/terapia , Intervenção Psicossocial
5.
Atherosclerosis ; 391: 117472, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38447434

RESUMO

BACKGROUND AND AIMS: Inclisiran, an siRNA therapy, consistently reduces low-density lipoprotein cholesterol (LDL-C) with twice-yearly dosing. Potential cardiovascular benefits of implementing inclisiran at a population level, added to statins, were evaluated through simulation. METHODS: For each participant in the ORION-10 and ORION-11 trials comparing inclisiran with placebo, baseline 10-year cardiovascular risk was estimated using the SMART equation. The time-adjusted LDL-C difference from baseline observed 90-540 days after baseline was assumed to persist and used to estimate potential reduction in 10-year cardiovascular risk. Impact on 500,000 ORION-like individuals was simulated with Monte-Carlo. RESULTS: Mean baseline LDL-C and predicted 10-year major vascular risk among patients randomized to inclisiran (n = 1288) versus placebo (n = 1264) were 2.66 mmol/L versus 2.60 mmol/L and 24.9% versus 24.6%, respectively. Placebo-corrected time-adjusted absolute reduction in LDL-C with inclisiran was -1.32 mmol/L (95% CI -1.37 to -1.26; p < 0.001), which predicted a 10-year cardiovascular risk of 18.1% with inclisiran versus 24.7% with placebo (absolute difference [95% CI], -6.99% [-7.33 to -6.66]; p < 0.001) NNT 15. Extrapolating to 500,000 inclisiran-treated individuals, the model predicted large population shifts towards lower quintiles of risk with fewer remaining in high-risk categories; 3350 to 471 (≥80% risk), 11,793 to 3332 (60-<80% risk), 52,142 to 22,665 (40-<60% risk), 197,752 to 141,014 (20-<40% risk), and more moving into the lowest risk category (<20%) from 234,963 to 332,518. CONCLUSIONS: Meaningful gains in population health might be achieved over 10 years by implementing at-scale approaches capable of providing substantial and sustained reductions in LDL-C beyond those achievable with statins.


Assuntos
Anticolesterolemiantes , Doenças Cardiovasculares , Inibidores de Hidroximetilglutaril-CoA Redutases , Humanos , LDL-Colesterol , Inibidores de Hidroximetilglutaril-CoA Redutases/uso terapêutico , RNA Interferente Pequeno , Doenças Cardiovasculares/genética , Doenças Cardiovasculares/prevenção & controle , Doenças Cardiovasculares/tratamento farmacológico , Pró-Proteína Convertase 9
6.
Antimicrob Agents Chemother ; 57(3): 1136-43, 2013 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-23254433

RESUMO

Although smallpox has been eradicated, the United States government considers it a "material threat" and has funded the discovery and development of potential therapeutic compounds. As reported here, the human efficacious dose for one of these compounds, ST-246, was determined using efficacy studies in nonhuman primates (NHPs), together with pharmacokinetic and pharmacodynamic analysis that predicted the appropriate dose and exposure levels to provide therapeutic benefit in humans. The efficacy analysis combined the data from studies conducted at three separate facilities that evaluated treatment following infection with a closely related virus, monkeypox virus (MPXV), in a total of 96 NHPs. The effect of infection on ST-246 pharmacokinetics in NHPs was applied to humans using population pharmacokinetic models. Exposure at the selected human dose of 600 mg is more than 4-fold higher than the lowest efficacious dose in NHPs and is predicted to provide protection to more than 95% of the population.


Assuntos
Antivirais/uso terapêutico , Benzamidas/uso terapêutico , Isoindóis/uso terapêutico , Macaca fascicularis/virologia , Monkeypox virus/efeitos dos fármacos , Mpox/tratamento farmacológico , Varíola/tratamento farmacológico , Animais , Antivirais/farmacocinética , Antivirais/farmacologia , Benzamidas/farmacocinética , Benzamidas/farmacologia , Cálculos da Dosagem de Medicamento , Feminino , Humanos , Isoindóis/farmacocinética , Isoindóis/farmacologia , Masculino , Modelos Estatísticos , Mpox/mortalidade , Mpox/virologia , Monkeypox virus/crescimento & desenvolvimento , Varíola/virologia , Análise de Sobrevida , Resultado do Tratamento , Vírus da Varíola/efeitos dos fármacos , Vírus da Varíola/crescimento & desenvolvimento
7.
Cogn Neuropsychol ; 30(5): 311-31, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-24344816

RESUMO

Pitch deafness, the most commonly known form of congenital amusia, refers to a severe deficit in musical pitch processing (i.e., melody discrimination and recognition) that can leave time processing--including rhythm, metre, and "feeling the beat"--preserved. In Experiment 1, we show that by presenting musical excerpts in nonpitched drum timbres, rather than pitched piano tones, amusics show normal metre recognition. Experiment 2 reveals that body movement influences amusics' interpretation of the beat of an ambiguous drum rhythm. Experiment 3 and a subsequent exploratory study show an ability to synchronize movement to the beat of popular dance music and potential for improvement when given a modest amount of practice. Together the present results are consistent with the idea that rhythm and beat processing are spared in pitch deafness--that is, being pitch-deaf does not mean one is beat-deaf. In the context of drum music especially, amusics can be musical.


Assuntos
Estimulação Acústica , Percepção Auditiva , Transtornos da Percepção Auditiva , Música , Estimulação Acústica/métodos , Adulto , Estudos de Casos e Controles , Discriminação Psicológica , Emoções , Feminino , Humanos , Pessoas com Deficiência Auditiva/psicologia , Percepção da Altura Sonora
8.
Clin Pharmacol Ther ; 113(2): 328-338, 2023 02.
Artigo em Inglês | MEDLINE | ID: mdl-36281788

RESUMO

Inclisiran is a novel N-acetylgalactosamine (GalNAc) conjugated small-interfering ribonucleic acid (siRNA) therapy designed to specifically target proprotein convertase subtilisin/kexin type 9 (PCSK9) mRNA in the liver for the treatment of hypercholesterolemia. Inclisiran's GalNAc attachment results in a rapid uptake into the liver, and thus a short plasma half-life, but long duration of effects on PCSK9 inhibition and low-density lipoprotein cholesterol (LDL-C) lowering. The effects on PCSK9 inhibition and consequent LDL-C reduction are sustained for more than 6 months following a single subcutaneous (s.c.) dose, despite inclisiran being detectable in the plasma only for up to 48 hours. A kinetic-pharmacodynamic (K-PD) model was developed to characterize inclisiran's dose-related LDL-C lowering effects and to evaluate the impact of intrinsic and extrinsic factors on LDL-C lowering. To accommodate the long duration of action, the K-PD model incorporated an effect compartment which represents the liver. Inclisiran concentration in the liver leads to decreased production of the PCSK9 protein and allow recycling of more LDL-C receptors on the hepatocyte cell surface, which results in a reduction of circulating LDL-C. The analysis of covariates identified PCSK9 and LDL-C baseline levels as important factors for the effects of LDL-C lowering. Observations and modeling and simulation results demonstrated that PCSK9 and LDL-C reductions are achieved rapidly after dosing and sustained when patients are treated with a 300 mg s.c. dose once every 6 months.


Assuntos
Anticolesterolemiantes , Hipercolesterolemia , Humanos , Hipercolesterolemia/tratamento farmacológico , Pró-Proteína Convertase 9/genética , LDL-Colesterol , RNA Interferente Pequeno/genética
9.
Regul Toxicol Pharmacol ; 64(1): 161-76, 2012 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-22735367

RESUMO

Impact of prenatal PCB exposure on birth weight was investigated in various children cohorts and findings of published studies show inconsistencies. Because a direct comparison of results obtained from different studies remains difficult, the "biological concentration-birth weight" relationship is not clearly established. The objective of this research was to perform a systematic analysis of published epidemiological data to reassess relationship between prenatal PCB exposure and low birth weight, using toxicokinetic considerations and a novel standardization procedure of biological concentration data across studies. A systematic analysis of 20 epidemiological studies published up to 2011 on this topic was conducted. This was achieved through a standardization of reported exposure data in terms of total PCBs per kg of lipids in maternal plasma. Systematic analysis of the "standardized biological concentration-birth weight" relationship across studies was then conducted through the application of Hill criteria. Combining results of all 20 reviewed studies did not allow to establish an association between prenatal exposure to PCBs at the described levels and abnormal birth weight (<2500g). Our approach provides a framework for the use of published data to establish "PCB biological concentration-response" relationships.


Assuntos
Peso ao Nascer/efeitos dos fármacos , Poluentes Ambientais/efeitos adversos , Recém-Nascido de Baixo Peso , Exposição Materna/efeitos adversos , Bifenilos Policlorados/efeitos adversos , Complicações na Gravidez/epidemiologia , Adulto , Poluentes Ambientais/farmacocinética , Estudos Epidemiológicos , Feminino , Humanos , Recém-Nascido , Masculino , Bifenilos Policlorados/farmacocinética , Gravidez , Medição de Risco
11.
J Clin Pharmacol ; 62(1): 87-98, 2022 01.
Artigo em Inglês | MEDLINE | ID: mdl-34352114

RESUMO

Burosumab is a fully human monoclonal antibody against fibroblast growth factor 23, which has been approved to treat X-linked hypophosphatemia (XLH) in adult and pediatric patients. The present work describes the pharmacokinetics (PK) of burosumab and the pharmacokinetic-pharmacodynamic (PK-PD) relationship between burosumab and serum phosphorus in adult and pediatric patients with XLH. A total of 2844 measurable serum concentrations of burosumab and 6047 measurable serum concentrations of phosphorus in 277 subjects from 9 clinical studies were included in the population PK and PK-PD modeling. The serum concentration of burosumab following a subcutaneous administration was well described by a population PK model comprising a first-order absorption, 1-compartmental distribution, and a linear elimination. The relationship between serum burosumab and serum phosphorus was adequately described by a sigmoid maximal efficacy model. Body weight was the only covariate associated with PK and PK-PD parameters. No other intrinsic factors affected PK or PK-PD relationship in adult and pediatric patients with XLH. Further simulations helped to guide the dosing regimen of burosumab in adult and pediatric patients with XLH including age groups with no clinical data.


Assuntos
Anticorpos Monoclonais Humanizados/farmacologia , Anticorpos Monoclonais Humanizados/uso terapêutico , Raquitismo Hipofosfatêmico Familiar/tratamento farmacológico , Fósforo/sangue , Adolescente , Adulto , Fatores Etários , Idoso , Anticorpos Monoclonais Humanizados/farmacocinética , Peso Corporal , Criança , Pré-Escolar , Relação Dose-Resposta a Droga , Feminino , Fatores de Crescimento de Fibroblastos/imunologia , Humanos , Lactente , Injeções Subcutâneas , Masculino , Pessoa de Meia-Idade , Modelos Biológicos , Adulto Jovem
12.
Clin Pharmacol Drug Dev ; 11(11): 1264-1272, 2022 11.
Artigo em Inglês | MEDLINE | ID: mdl-35908210

RESUMO

Triheptanoin is an odd-carbon, medium-chain triglyceride consisting of three fatty acids with seven carbons each on a glycerol backbone, indicated for the treatment of adult and pediatric patients with long-chain fatty acid oxidation disorders (LC-FAOD). A total of 562 plasma concentrations of heptanoate, the most abundant and pharmacologically active metabolite of triheptanoin, from 13 healthy adult subjects and 30 adult and pediatric subjects with LC-FAOD were included in the population pharmacokinetic (PK) analyses. Multiple peaks of heptanoate observed in several subjects were characterized by dual first-order absorption with a lag time in the second absorption compartment. The disposition of heptanoate in human plasma was adequately described by one-compartmental distribution with a linear elimination. The apparent clearance (CL/F) and apparent volume of distribution were allometrically scaled with body weight to describe PK data across a wide range of age groups in subjects with LC-FAOD. The typical CL/F in adult subjects with LC-FAOD was ≈19% lower than that in healthy subjects. Model-estimated elimination half-life for LC-FAOD patients was ∼1.7 hours, supporting a recommended dosing frequency of ≥4 times per day. Covariate analyses indicate that age, race, and sex did not lead to clinically meaningful changes in the exposure of heptanoate.


Assuntos
Heptanoatos , Erros Inatos do Metabolismo Lipídico , Adulto , Humanos , Criança , Erros Inatos do Metabolismo Lipídico/metabolismo , Voluntários Saudáveis , Triglicerídeos , Ácidos Graxos/metabolismo
13.
J Dent ; 120: 104091, 2022 05.
Artigo em Inglês | MEDLINE | ID: mdl-35283258

RESUMO

OBJECTIVE: To explore a personalized musical intervention's effect on burden of care during dental implants placement. METHODS: Randomized Controlled Trial in 24 dental implant surgery patients. A personalized music intervention (Music Care© application) or an audiobook control condition was administered. Burden of care (a composite outcome including self-reported anxiety, pain, and dissatisfaction felt during surgery), expected pain prior to surgery, pre- and post-surgery affect, memory of pain felt during surgery, and participants' emotional judgments of the music and audiobook listening were assessed. RESULTS: The personalized music intervention significantly reduced the burden of care for dental implant surgery (p = 0.02; d = 1.07). Both groups reported positive affect after surgery, but the music group felt better. The pain remembered after seven postoperative days was significantly lower in the music group (p = 0.02). Participants judged the music listened to during surgery as more relaxing and pleasant than the audiobook (p = 0.002 and p = 0.001, respectively). CONCLUSIONS: Personalized music intervention could be effective in decreasing patients' burden of care during dental implant surgery. These results need to be confirmed by a rigorous randomized control trial. CLINICAL SIGNIFICANCE: The burden of care associated with the pain and anxiety experienced during dental implant surgery can be reduced using a personalized and standardized music intervention. This approach may provide a simple complementary approach to improve surgical care in various settings.


Assuntos
Implantes Dentários , Musicoterapia , Música , Ansiedade/prevenção & controle , Humanos , Musicoterapia/métodos , Dor , Projetos Piloto
14.
Front Psychol ; 12: 729037, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34671300

RESUMO

Daily activities can often be performed while listening to music, which could influence the ability to select relevant stimuli while ignoring distractors. Previous studies have established that the level of arousal of music (e.g., relaxing/stimulating) has the ability to modulate mood and affect the performance of cognitive tasks. The aim of this research was to explore the effect of relaxing and stimulating background music on selective attention. To this aim, 46 healthy adults performed a Stroop-type task in five different sound environments: relaxing music, stimulating music, relaxing music-matched noise, stimulating music-matched noise, and silence. Results showed that response times for incongruent and congruent trials as well as the Stroop interference effect were similar across conditions. Interestingly, results revealed a decreased error rate for congruent trials in the relaxing music condition as compared to the relaxing music-matched noise condition, and a similar tendency between relaxing music and stimulating music-matched noise. Taken together, the absence of difference between background music and silence conditions suggest that they have similar effects on adult's selective attention capacities, while noise seems to have a detrimental impact, particularly when the task is easier cognitively. In conclusion, the type of sound stimulation in the environment seems to be a factor that can affect cognitive tasks performance.

15.
Clin Neuropsychol ; 35(7): 1232-1257, 2021 10.
Artigo em Inglês | MEDLINE | ID: mdl-32125222

RESUMO

OBJECTIVE: Supervisors in neuropsychology have an ethical responsibility to continuously improve their ability to supervise. Despite a growing interest in the field, there exist little data on the actual practice and few guidelines to help the practitioner through the process of neuropsychology supervision. This study aims to characterize neuropsychology supervisors and their practices in Quebec, Canada and compare these with supervisory practices of supervisors in the United States, with the ultimate aim of offering recommendations to supervisors. METHOD: Seventy-nine neuropsychology supervisors responded to the 20-question online survey of supervisory experience, education, practices, and familiarity with and use of supervision models that was inspired by Shultz and colleagues. RESULTS: Experience in clinical supervision ranged from 0.12 to 35 years and from having supervised 1-150 supervisees. About half of respondents reported having received continuing education in supervision and about two thirds were familiar with at least one type of supervision model. Some supervisory practices were associated with experience, but not with familiarity and utilization of supervision models. Supervisors from Quebec and the U.S. reported a similar frequency of addressing most of the various supervisory competencies with their supervisees. CONCLUSIONS: Based on the competency-based approach we offer a portrait of neuropsychology supervision in Quebec while highlighting some cultural differences with the U.S. Recommendations include focusing more on certain foundational (e.g. reflective practice) and functional competencies (supervision most notably). Neuropsychology supervisors are also encouraged to devote more time to continuing education opportunities in supervision in order to ensure supervisee development and quality care.


Assuntos
Comparação Transcultural , Neuropsicologia , Humanos , Testes Neuropsicológicos , Quebeque , Inquéritos e Questionários
16.
Brain Sci ; 11(11)2021 Nov 12.
Artigo em Inglês | MEDLINE | ID: mdl-34827500

RESUMO

Sport-related concussion is a serious public health issue affecting millions of individuals each year. Among the many negative side effects, emotional symptoms, such as stress, are some of the most common. Stress management is repeatedly cited by expert groups as an important intervention for this population. It was shown that music has relaxing effects, reducing stress through the activation of brain areas involved in emotions and pleasure. The objective of this study was to explore the effects of a music-listening intervention compared with silence on experimentally induced stress in concussed and non-concussed athletes. To this aim, four groups of athletes (non-concussed music, non-concussed silence, concussed music, and concussed silence) performed the Trier Social Stress Test, for which both physiological (skin conductance level) and self-reported stress measurements were taken. No significant difference was found in the pattern of stress recovery for self-reported measurements. However, the skin conductance results showed greater and faster post-stress recovery after listening to music compared with silence for concussed athletes only. Taken together, these results suggest that music could be an efficient stress management tool to implement in the everyday life of concussed athletes to help them prevent stress accumulation.

17.
Brain Sci ; 11(9)2021 Sep 03.
Artigo em Inglês | MEDLINE | ID: mdl-34573194

RESUMO

Music perception deficits are common following acquired brain injury due to stroke, epilepsy surgeries, and aneurysmal clipping. Few studies have examined these deficits following traumatic brain injury (TBI), resulting in an under-diagnosis in this population. We aimed to (1) compare TBI patients to controls on pitch and rhythm perception during the acute phase; (2) determine whether pitch and rhythm perception disorders co-occur; (3) examine lateralization of injury in the context of pitch and rhythm perception; and (4) determine the relationship between verbal short-term memory (STM) and pitch and rhythm perception. Music perception was examined using the Scale and Rhythm tests of the Montreal Battery of Evaluation of Amusia, in association with CT scans to identify lesion laterality. Verbal short-term memory was examined using Digit Span Forward. TBI patients had greater impairment than controls, with 43% demonstrating deficits in pitch perception, and 40% in rhythm perception. Deficits were greater with right hemisphere damage than left. Pitch and rhythm deficits co-occurred 31% of the time, suggesting partly dissociable networks. There was a dissociation between performance on verbal STM and pitch and rhythm perception 39 to 42% of the time (respectively), with most individuals (92%) demonstrating intact verbal STM, with impaired pitch or rhythm perception. The clinical implications of music perception deficits following TBI are discussed.

18.
Front Hum Neurosci ; 14: 566841, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-33568976

RESUMO

Congenital amusia in its most common form is a disorder characterized by a musical pitch processing deficit. Although pitch is involved in conveying emotion in music, the implications for pitch deficits on musical emotion judgements is still under debate. Relatedly, both limited and spared musical emotion recognition was reported in amusia in conditions where emotion cues were not determined by musical mode or dissonance. Additionally, assumed links between musical abilities and visuo-spatial attention processes need further investigation in congenital amusics. Hence, we here test to what extent musical emotions can influence attentional performance. Fifteen congenital amusic adults and fifteen healthy controls matched for age and education were assessed in three attentional conditions: executive control (distractor inhibition), alerting, and orienting (spatial shift) while music expressing either joy, tenderness, sadness, or tension was presented. Visual target detection was in the normal range for both accuracy and response times in the amusic relative to the control participants. Moreover, in both groups, music exposure produced facilitating effects on selective attention that appeared to be driven by the arousal dimension of musical emotional content, with faster correct target detection during joyful compared to sad music. These findings corroborate the idea that pitch processing deficits related to congenital amusia do not impede other cognitive domains, particularly visual attention. Furthermore, our study uncovers an intact influence of music and its emotional content on the attentional abilities of amusic individuals. The results highlight the domain-selectivity of the pitch disorder in congenital amusia, which largely spares the development of visual attention and affective systems.

19.
Front Psychol ; 11: 557225, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-33192813

RESUMO

Healthy aging may be accompanied by cognitive decline that includes diminished attentional control, an executive function that allows us to focus our attention while inhibiting distractors. Previous studies have demonstrated that background music can enhance some executive functions in both young and older adults. According to the Arousal-Mood Theory, the beneficial influence of background music on cognitive performance would be related to its ability to increase the arousal level of the listeners and to improve their mood. Consequently, stimulating and pleasant music might enhance attentional control. Therefore, the aims of this study were (1) to determine if the influence of background music, and more specifically its arousal level, might improve attentional control in older adults and (2) whether this effect is similar across older and young adults. Older and young adults performed a visuo-spatial flanker task during three auditory conditions: stimulating music, relaxing music, and silence. Participants had to indicate as fast and as accurately as possible the direction of a central arrow, which was flanked by congruent or incongruent arrows. As expected, reaction times were slower for the incongruent compared to congruent trials. Interestingly, this difference was significantly greater under the relaxing music condition compared to other auditory conditions. This effect was the same across both age groups. In conclusion, relaxing music seems to interfere with visuo-spatial attentional control compared to stimulating music and silence, regardless of age.

20.
Front Psychol ; 11: 774, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32411054

RESUMO

Previous research shows that listening to pleasant, stimulating and familiar music is likely to improve working memory performance. The benefits of music on cognition have been widely studied in Western populations, but not in other cultures. The purpose of this study was to explore the impact of music on working memory in a non-Western sociocultural context: Rwanda. One hundred and nineteen participants were randomly assigned to a control group (short story) or one of four different musical conditions varying on two dimensions: arousal (relaxing, stimulating) and cultural origin (Western, Rwandan). Working memory was measured using a behavioral task, the n-back paradigm, before and after listening to music (or the short story in the control condition). Unlike in previous studies with Western samples, our results with this Rwandan sample did not show any positive effect of familiar, pleasant and stimulating music on working memory. Performance on the n-back task generally improved from pre to post, in all conditions, but this improvement was less important in participants who listened to familiar Rwandan music compared to those who listened to unfamiliar Western music or to a short story. The study highlights the importance of considering the sociocultural context in research examining the impact of music on cognition. Although different aspects of music are considered universal, there may be cultural differences that limit the generalization of certain effects of music on cognition or that modulate the characteristics that favor its beneficial impact.

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