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1.
Arch Gerontol Geriatr ; 125: 105485, 2024 May 09.
Artigo em Inglês | MEDLINE | ID: mdl-38776699

RESUMO

OBJECTIVE: Provide a synthesis of the current literature about the effects of detraining on cognitive functions in older adults. METHODS: The PICOS acronym strategy was performed in PubMed/MEDLINE, Web of Science, Cochrane Library and PsycINFO database. The Preferred Reporting Items for Systematic Review and Meta-Analyses statement had been followed in the present study, in which the search was conducted on October 2023. The study selection consisted in original articles including older adults, detraining after training exercise period, use of tests or scales to measure cognitive function. The Downs and Black checklist had been used to assess the studies quality. Sample characteristics, type of previous training, detraining period, cognitive functions measurements and main results were extracted by 2 investigators. RESULTS: From 1927 studies, 12 studies were included, being 11 studies identified via systematic research, and 1 study by citation search. Older adults, ranged from 60 to 87 years old, were assessed after detraining. The cognitive functions most evaluated were global cognition and executive functions. One study evaluated both cognitive outcome and cerebral blood flow. Most of the studies demonstrated a decline in the cognitive function after detraining. CONCLUSION: Exercise detraining period, ranging from 10 days to 16 weeks, can effect negatively the cognitive function in older adults.

3.
Am J Psychoanal ; 2024 May 27.
Artigo em Inglês | MEDLINE | ID: mdl-38802522

RESUMO

The shift towards remote or online therapy was compelled by the Pandemic. Many colleagues, who neither had practice using this modality, nor had ever considered it as a possibility, ultimately adopted it. This experience brought with it a substantial expansion of online therapy beyond that moment of emergency. It opened up new prospects of intervention, but at the same time it required a greater measure of reflection in order to understand how to inhabit this new therapy space. Setting aside provisory, intermittent, or emergency situations, which temporarily transfer therapy into a "field of tents" (Bolognini, 2021), the author proposes to consider how online psychotherapy redefines an important element of the psychoanalytic setting-the issue of the space. This is no longer the therapist's place of work, envisaged and organized by him/her/them, fixed in time, and contrived only to welcome the therapeutic relationship-one of the crucial aspects of the external setting, which together with the temporal dimension, fulfills the therapy ritual. Assuming the framework to be essential to the psychoanalytic process, this paper will focus on the methodology of online therapy. The author will describe the contributions of the neurosciences, to provide a deeper understanding of the distinctive characteristics of sharing in an online vs. an offline space. Online therapy should be assessed for its distinguishing qualities within a complete theoretical, technical, and clinical reflection specific to each case. Proceeding as if it were a mere relocation of an in-person analysis would enhance the seductiveness of a therapy that is easily accessible with any laptop anywhere, anytime, and in which one could mistake an online connection for a deep connection.

4.
Alzheimers Dement ; 2024 May 29.
Artigo em Inglês | MEDLINE | ID: mdl-38809948

RESUMO

INTRODUCTION: The combination of exergame-based motor-cognitive training with resonance breathing guided by heart-rate variability biofeedback (HRV-BF) targets various relevant mechanisms of action to alleviate the pathological state in mild neurocognitive disorders (mNCD). METHODS: This randomized controlled trial (RCT) investigated the effectiveness of adding this novel intervention approach to usual care in mNCD. The individualized intervention was delivered via the "Brain-IT" training concept, which was iteratively co-designed, tested, and refined with patient and public involvement. RESULTS: We observed statistically significant effects with large effect sizes for global cognitive performance, immediate verbal recall, and delayed verbal recall in favor of the intervention group. Fifty-five percent of participants showed a clinically relevant improvement in response to training. DISCUSSION: Confirmatory RCTs are warranted to investigate whether the observed improvements in cognitive performance translate to affecting the rates of progression to or onset of dementia and test the implementation of the training in clinical practice. HIGHLIGHTS: We proposed a novel intervention approach for mild neurocognitive disorders. It combines exergame-based training with biofeedback-guided resonance breathing. Our results confirm the effectiveness of this approach. Fifty-five percent of participants showed a clinically relevant improvement in response to training.

5.
Hist Human Sci ; 37(2): 12-40, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38698897

RESUMO

The invention of film technologies in France at the end of the 19th century inspired neurologists and associated professionals to engage with this new medium to demonstrate their theories of the brain, the nervous system, and the mind. Beginning with the origins of cinema in Paris, this article explores how film technologies were used at La Salpêtrière, and beyond, to visualise internal mental processes, and to support the burgeoning sciences of the mind. This film-making became increasingly sophisticated by the late 1910s and early 1920s, creating innovative ways to present psychological experiences on film. This article focuses on films produced by Albert Londe, Vincenzo Neri, Gheorghe Marinescu, and Jean Comandon. It argues that these polymaths created new filming techniques that built complexity into the visual articulation of psychological concepts. Their films were essential to shaping early debates in neurology, psychology, and the observational sciences during this critical period in the establishment of the modern sciences of the self.

6.
Nutr Neurosci ; : 1-9, 2024 Apr 22.
Artigo em Inglês | MEDLINE | ID: mdl-38648081

RESUMO

OBJECTIVES: Although an increasing number of studies show that time-restricted feeding may improve metabolic health, studies examining the behavioral effects of this eating pattern are limited. This study examined the effect of time-restricted feeding on impulsivity in adults. METHODS: Thirty adults aged 25-41 years participated in this randomized controlled trial. The intervention group followed time-restricted feeding for 4 weeks and there was no energy restriction in the intervention group (n = 15) or control group (n = 15). Impulsivity was assessed before and after the intervention with the Barratt Impulsiveness Scale and the Go/NoGo task. RESULTS: The compliance rate (the percentage of days when participants had a feeding time of ≤ 8 hours/day) of the intervention group to the time-restricted feeding pattern was 92.38 ± 4.24%. The Barratt Impulsiveness Scale-11 total score of the intervention group increased from 55.53 ± 6.37 to 59.47 ± 7.67 (p = 0.02). During the Go/NoGo task, an indicator of inhibitory control, the reaction time to food and non-food stimuli was significantly shortened in the intervention group (respectively; p = 0.009, p = 0.01). In the control group, no significant change was detected in impulsivity determined by the BIS-11 or Go/NoGo task. DISCUSSION: This study showed that although time-restricted feeding may reduce body weight, it can lead to increased impulsivity and impaired inhibitory control.Trial registration: ClinicalTrials.gov identifier: NCT04960969.

7.
Dement Neuropsychol ; 18: e20230078, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38628563

RESUMO

The purpose of this review is to highlight the most important aspects of the anatomical and functional uniqueness of the human brain. For this, a comparison is made between our brains and those of our closest ancestors (chimpanzees and bonobos) and human ancestors. During human evolution, several changes occurred in the brain, such as an absolute increase in brain size and number of cortical neurons, in addition to a greater degree of functional lateralization and anatomical asymmetry. Also, the cortical cytoarchitecture became more diversified and there was an increase in the number of intracortical networks and networks extending from the cerebral cortex to subcortical structures, with more neural networks being invested in multisensory and sensory-motor-affective-cognitive integration. These changes permitted more complex, flexible and versatile cognitive abilities and social behavior, such as shared intentionality and symbolic articulated language, which, in turn, made possible the formation of larger social groups and cumulative cultural evolution that are characteristic of our species.


Esta revisão se propõe a relatar os aspectos mais importantes da singularidade anatômica e funcional do cérebro humano. Para isso, faz-se uma comparação entre o nosso cérebro e os de nossos parentes evolutivos mais próximos (chimpanzés e bonobos) e os ancestrais humanos. Durante a evolução humana ocorreu aumento absoluto do tamanho do cérebro e do número de neurônios corticais cerebrais, maior grau de lateralização funcional e assimetria anatômica cerebral, citoarquitetura cortical mais diversificada e aumento das redes neurais intracorticais e do córtex cerebral para as estruturas subcorticais acompanhada de mudança em direção ao investimento de redes neurais na integração multissensorial e sensório-motora-afetiva-cognitiva. Essas mudanças possibilitaram capacidades cognitivas e comportamentos sociais complexos, flexíveis e versáteis, destacando-se a intencionalidade compartilhada e a linguagem articulada simbólica, que permitiram a formação de grupos sociais maiores e a evolução cultural cumulativa característica de nossa espécie.

8.
Adv Neurobiol ; 36: 261-271, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38468037

RESUMO

Over the last years, fractals have entered into the realms of clinical neurosciences. The whole brain and its components (i.e., neurons and astrocytes) have been studied as fractal objects, and even more relevant, the fractal-based quantification of the geometrical complexity of histopathological and neuroradiological images as well as neurophysiopathological time series has suggested the existence of a gradient in the pattern representation of neurological diseases. Computational fractal-based parameters have been suggested as potential diagnostic and prognostic biomarkers in different brain diseases, including brain tumors, neurodegeneration, epilepsy, demyelinating diseases, cerebrovascular malformations, and psychiatric disorders as well. This chapter and the entire third section of this book are focused on practical applications of computational fractal-based analysis into the clinical neurosciences, namely, neurology and neuropsychiatry, neuroradiology and neurosurgery, neuropathology, neuro-oncology and neurorehabilitation, neuro-ophthalmology, and cognitive neurosciences, with special emphasis on the translation of the fractal dimension and other fractal parameters as clinical biomarkers useful from bench to bedside.


Assuntos
Neoplasias Encefálicas , Epilepsia , Humanos , Biomarcadores , Encéfalo/patologia , Neoplasias Encefálicas/diagnóstico por imagem , Fractais
9.
Adv Neurobiol ; 36: 3-13, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38468025

RESUMO

The first chapter of this book introduces some history, philosophy, and basic concepts of fractal geometry and discusses how the neurosciences can benefit from applying computational fractal-based analysis. Further, it compares fractal with Euclidean approaches to analyzing and quantifying the brain in its entire physiopathological spectrum and presents an overview of the first section of this book as well.

10.
Can J Neurol Sci ; : 1-5, 2024 Jan 18.
Artigo em Inglês | MEDLINE | ID: mdl-38232957

RESUMO

Common data elements (CDEs) for concussion, as established by international bodies, are not being widely used in Ontario, resulting in significant variability in the data being assessed and collected across clinics. CDEs support standardization of care as well as large-scale data sharing for high impact research. A collaborative network - Concussion Ontario Network: Neuroinformatics to Enhance Clinical care and Translation (CONNECT) - comprised of health care professionals, researchers, members from advocacy groups, and patients was formed to establish and implement CDEs for concussion care and research. While the seeds have been planted and initial effectiveness demonstrated, future challenges exist.

11.
World Neurosurg ; 182: e29-e33, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-37952888

RESUMO

OBJECTIVE: Neurophobia is well recognized as dissuading medical students from neurocentric specialties and limiting the success of neurology and neurosurgery teaching at medical school. Past studies have associated neurophobia with deficiencies in medical education. We performed a cross-sectional analysis of medical students' confidence and perceived level of knowledge in recognizing the following neurosurgical and neurological emergencies: ischemic stroke, hemorrhagic stroke, status epilepticus, subarachnoid hemorrhage, increased intracranial pressure, acute hydrocephalus, spinal cord injury, cauda equina syndrome, and traumatic brain injury. In addition, we assessed the usefulness of virtual seminars in neurosurgery and neurology teaching. METHODS: Medical students from King's College London were invited to a virtual teaching session. We obtained preteaching and postteaching scores for students' subjective ability to recognize specific neurologic and neurosurgical emergencies, along with their confidence in the subject. RESULTS: Ninety-seven medical students attended the teaching session. For our sample group's subjective rating on their confidence in neurology or neurosurgery as a subject, we obtained a mean score of 3.87 and a median score of 4. Across all domains, there was a significant forward shift in the distribution curve of scores after teaching. We obtained statistically significant differences for all 9 neurologic and neurosurgical emergencies evaluated in our questionnaire (asymptotic significance <0.001). Median scores for all 9 conditions improved after the teaching session, with >50% positive ranks seen within each group. Across the teaching modalities compared, placement teaching was the highest scoring, whereas online lectures received a better rating than in-person lectures. CONCLUSIONS: In neurosurgery teaching, virtual seminars may compensate for deficiencies that exist within medical education, hence limiting the effects of neurophobia.


Assuntos
Neurologia , Estudantes de Medicina , Humanos , Estudos Transversais , Emergências , Neurologia/educação , Inquéritos e Questionários , Ensino
12.
Can J Neurol Sci ; 51(2): 300-304, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-37385640

RESUMO

Cerebral visual impairments have been of great interest to neurologists, ophthalmologists, and neuroscientists. Complicated or partial varieties related to cortical blindness are discussed in this review. They are a fascinating alphabet of eponymic clinical syndromes, bordering neurology, ophthalmology, and even psychiatry. Recent functional imaging and experimental studies have contributed further knowledge of cognitive visual organization in addition to the classical lesion evidence.


Assuntos
Cegueira Cortical , Encefalopatias , Neurologia , Humanos , Transtornos da Visão , Encefalopatias/complicações , Síndrome , Alucinações/etiologia
13.
Ciênc. Saúde Colet. (Impr.) ; 29(2): e19502022, 2024.
Artigo em Português | LILACS-Express | LILACS | ID: biblio-1528364

RESUMO

Resumo Desde o seu nascimento na medicina cirúrgica do século XVII, a pesquisa do trauma admitiu interpretações múltiplas e associadas ora às lesões visíveis de órgãos e tecidos, ora à influência de agentes psíquicos patogênicos sobre a memória, a consciência e a personalidade. Com o aprofundamento do papel dos sistemas classificatórios desde DSM-III, o fenômeno do trauma será incorporado ao prisma psiquiátrico através do Transtorno de Estresse Pós-Traumático e destinado, finalmente, à circunscrição da pesquisa neurocientífica. A partir de revisão narrativa, este artigo abordará uma das premissas epistemológicas fundamentais para essa transição, que informa como o trauma psicológico ganhou autonomia sobre as descrições anatômicas para ser, cerca de um século depois, por ela reanexado enquanto fenômeno essencialmente corporal e aderido à gramática das neurociências.


Abstract Since its origin in the surgical medicine of the 17th century, trauma research has had multiple interpretations and has been associated either with visible injuries to organs and tissues, or with the influence of pathogenic psychic agents on memory, consciousness and personality. With the intensification of the role of classification systems since DSM-III, the phenomenon of trauma came to be incorporated into the psychiatric realm through Post-Traumatic Stress Disorder and destined finally to the constraints of neuroscientific research. Based on a narrative review, this article will address one of the fundamental epistemological premises for this transition, which informs how psychological trauma gained autonomy over anatomical descriptions to be reclassified, around a century later, as an essentially bodily phenomenon and incorporated into the jargon of neurosciences.

14.
Front Aging Neurosci ; 15: 1219449, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-38046465

RESUMO

Background: There are usually multiple factors underlying dementia in old age. Somatic comorbidity is one important element that influences the progression of cognitive impairment. Objective: The goal of this study was to assess the relationship between the progression of cognitive impairment and the presence and severity of comorbidities based on a four-year observation. Material: Out of 128 patients from the Clinic for Outpatients in Gdansk, who were recruited into the study based on the criteria of the Working Group on Mild Cognitive Impairment, a total of 93 participants completed the four-year observation. Only the data from participants who completed the full period of observations were analysed. The mean age of the group was M = 75.93 (SD = 9.43). The level of progression of cognitive impairment was measured using the Clinical Dementia Rating Scale - Sum of Boxes, the severity of comorbidities was measured using the modified Cumulative Illness Rating Scale, and, additionally, at the time of inclusion in the study, participants were assessed using the MMSE scale and the Activity Scale, and sociodemographic data were collected. The Generalized Estimating Equations method was employed to fit a marginal model for analyzing the data collected in a repeated measures design. The tested model elucidated the role of the overall severity of comorbidities in explaining the progression of cognitive impairment, while controlling for everyday activity and basic demographic variables. Results: During the four-year observation, a significant decline in cognitive function (B = 1.86, p < 0.01) was observed in the examined sample. The statistical analysis revealed that individuals with higher overall severity of comorbidities exhibited significantly more pronounced progression of cognitive impairment over time. Regarding particular comorbidities, metabolic diseases were found to be associated with a poorer prognosis (rho = 0.41, p < 0.05). Furthermore, a time physical activity interaction was identified as predicting cognitive impairment, indicating that individuals who were more physically active at the beginning of the study exhibited significantly less pronounced progression of cognitive impairment over the course of the 4 years. Conclusion: This study suggests the important roles of comorbidities and physical activity for the prognosis of mild cognitive impairment.

15.
Int J Psychol Res (Medellin) ; 16(2): 1-3, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-38106961

RESUMO

The first experimental laboratory in psychology was founded in Leipzig (Germany), where Wilhelm Wundt mainly investigated feelings and sensations by employing experimental methods. Almost a century and half after is debut, experimental laboratories have extremely evolved in terms of apparatus, instruments, and recording techniques. Under a multiand interdisciplinary perspective, we can now better understand human cognitive and affective processes. As current zeitgeist has placed increasing emphasis upon the ecologically valid research, an "out-of-thelab" approach, integrated with both human and nonhuman research, is expected to leverage scientific advances in the field of human behavior.


El primer laboratorio experimental de psicología se fundó en Leipzig (Alemania), donde Wilhelm Wundt investigó principalmente los sentimientos y las sensaciones empleando métodos experimentales. Casi siglo y medio después de su debut, los laboratorios experimentales han evolucionado enormemente en cuanto a aparatos, instrumentos y técnicas de registro. Bajo una perspectiva multi e interdisciplinar, ahora podemos comprender mejor los procesos cognitivos y afectivos humanos. Dado que el zeitgeist actual ha puesto cada vez más énfasis en la investigación válida ecológicamente, se espera que un enfoque "fuera del laboratorio", integrado con la investigación humana y no humana, impulse los avances científicos en el campo del comportamiento humano.

16.
BrJP ; 6(4): 366-373, Oct.-Dec. 2023. graf
Artigo em Inglês | LILACS-Express | LILACS | ID: biblio-1527970

RESUMO

ABSTRACT BACKGROUND AND OBJECTIVES: Fibromyalgia syndrome (FMS) is characterized by different factors, such as chronic diffuse muscle pain (CDMP), fatigue and psycho-emotional changes. Among the animal models that mimic FMS, the acid saline model is consolidated in the development and maintenance of CDMP. Resistance training (RT) has been an effective method for reducing pain in FMS. Thus, the aim of the present study was to evaluate the effects of resistance training on nociceptive and motor responses in an animal model of chronic diffuse muscular pain. METHODS: Twenty-four male Wistar rats were allocated into four groups: resistance training, RT control, amitriptyline (AMITRIP) and AMITRIP control; all treatment protocols lasted 4 weeks. CDMP was induced in all mice. Then, the animals were treated with low-intensity RT (40% 1 maximum repetition) and AMITRIP (10 mg/kg/day). The mechanical paw withdrawal threshold, locomotor activity and muscle strength were evaluated. RESULTS: Animals treated with both RT and AMITRIP showed an increase in the mechanical paw withdrawal threshold (p<0.05) compared to their controls, suggesting a reduction in mechanical hyperalgesia. There was no improvement in locomotor activity in all groups (p>0.05). Animals with CDMP that underwent RT showed an increase in hindlimb muscle strength (p<0.0001) compared to the RT control group. CONCLUSION: Low-intensity resistance training resulted in antihyperalgesic effects and improved muscle strength in animals submitted to the CDMP model.


RESUMO JUSTIFICATIVA E OBJETIVOS: A síndrome da fibromialgia (SFM) é caracterizada por diferentes fatores, como dor crônica muscular difusa (DCMD), fadiga e alterações psicoemocionais. Dentre os modelos animais que mimetizam a SFM, o modelo de salina ácida é consolidado no desenvolvimento e na manutenção da DCMD. O treinamento resistido (TR) tem sido um método eficaz para redução da dor na SFM. Assim, o objetivo do presente estudo foi avaliar os efeitos do TR na resposta nociceptiva e motora em modelo animal de dor crônica muscular difusa. MÉTODOS: Vinte e quatro ratos machos Wistar foram alocados em quatro grupos: treinamento resistido (TR), controle do TR, amitriptilina (AMITRIP) e controle da AMITRIP, todos os protocolos de tratamento tiveram duração de 4 semanas. A DCMD foi induzida em todos os ratos. Em seguida, os animais foram tratados com TR de baixa intensidade (40% 1 repetição máxima) e AMITRIP (10 mg/kg/dia). Foram avaliados o limiar mecânico de retirada de pata, a atividade locomotora e a força muscular. RESULTADOS: Animais tratados tanto com TR quanto com AMITRIP apresentaram aumento do limiar mecânico de retirada de pata (p<0,05) em relação aos seus controles, sugerindo redução da hiperalgesia mecânica. Não foi observada melhora da atividade locomotora em todos os grupos (p>0,05). Animais com DCMD que realizaram TR obtiveram aumento da força muscular dos membros posteriores (p<0,0001) em comparação ao grupo controle do TR. CONCLUSÃO: Treinamento resistido de baixa intensidade resultou em efeitos anti-hiperalgésicos e melhora da força muscular em animais submetidos ao modelo de DCMD.

17.
Rev. Bras. Neurol. (Online) ; 59(4, supl.1): 22-26, out.- dez. 2023. ilus
Artigo em Inglês | LILACS-Express | LILACS | ID: biblio-1552691

RESUMO

This narrative review addresses the complex relationship between neurological diseases and artistic expression, which can have a profound impact on a painter´s works. This exploration highlights the dynamic and ever-evolving connection between neuroscience and art, offering insights into the extraordinary ways in which the human brain and artistic expression intersect and evolve. Following brain damage, there may be the emergence of sudden artistic talents, intriguing changes in the styles of established artists, the paradoxical facilitation of artistic abilities despite the cognitive decline consequent to these injuries, besides coping strategies that artists adopt in response to the challenges of health. Therefore, this article investigates different scenarios where brain injuries and disorders have had a profound impact on artists, leading to the emergence of new talents, changes in artistic styles, and unexpected improvements in their work, as well as adaptations in their artistic practices, as represented by some painters such as Tommy McHugh (1949 -2012), Francisco Goya (1746-1828), Otto Dix (1891-1969), Willem de Kooning (1904-1997), William Charles Utermohlen (1933-2007) and Charles Meryon (1821-1868). Consequently, works of art can be valuable but understudied tools for understanding brain dysfunction, although they must be interpreted with great care.


Esta revisão narrativa aborda a complexa relação entre doenças neurológicas e expressão artística, que pode ter um impacto profundo na obra de um pintor. Esta exploração destaca a conexão dinâmica e em constante evolução entre a neurociência e a arte, oferecendo insights sobre as formas extraordinárias pelas quais o cérebro humano e a expressão artística se cruzam e evoluem. Após danos cerebrais, pode haver o surgimento de talentos artísticos repentinos, mudanças intrigantes nos estilos de artistas estabelecidos, a facilitação paradoxal de habilidades artísticas, apesar do declínio cognitivo consequente a essas lesões, além de estratégias de enfrentamento que os artistas adotam em resposta aos desafios de saúde. Portanto, este artigo investiga diferentes cenários onde lesões e distúrbios cerebrais tiveram um impacto profundo nos artistas, levando ao surgimento de novos talentos, mudanças nos estilos artísticos e melhorias inesperadas em seu trabalho, bem como adaptações em suas práticas artísticas, bem como representado por alguns pintores como Tommy McHugh (1949 -2012), Francisco Goya (1746-1828), Otto Dix (1891-1969), Willem de Kooning (1904-1997), William Charles Utermohlen (1933-2007) e Charles Meryon (1821-1868). Consequentemente, as obras de arte podem ser ferramentas valiosas, mas pouco estudadas, para a compreensão da disfunção cerebral, embora devam ser interpretadas com muito cuidado.

18.
J Biomed Phys Eng ; 13(6): 573-576, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-38148964

RESUMO

Microelectrode Arrays (MEAs) neural interfaces are considered implantable devices that interact with the nervous system to monitor and/or modulate brain activity. Graphene-based materials are utilized to address some of the current challenges in neural interface design due to their desirable features, such as high conductance, large surface-to-volume ratio, suitable electrochemical properties, biocompatibility, flexibility, and ease of production. In the current study, we fabricated and characterized a type of flexible, ultrasmall, and implantable neurostimulator based on graphene fibers. In this procedure, wet-spinning was employed to create graphene fibers with diameters of 10 to 50 µm. A 10-channel polyimide Printed Circuit Board (PCB) was then custom-designed and manufactured. The fibers were attached to each channel by conductive glue and also insulated by soaking them in a polyurethane solution. The tips were subsequently exposed using a blowtorch. Microstructural information on the fibers was obtained using Scanning Electron Microscopy (SEM), and the measurements of Electrochemical Impedance Spectroscopy (EIS) were conducted for each electrode. Flexible MEAs were created using graphene fibers with diameters ranging from 10 to 50 microns with a spacing of 150 microns. This method leads to producing electrode arrays with any size of fibers and a variety of channel numbers. The flexible neural prostheses can replace conventional electrodes in both neuroscience and biomedical research.

19.
Neurosci Biobehav Rev ; 155: 105463, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-37967734

RESUMO

Reproducibility, measurability, and refutability are the foundation of the scientific method applied to empirical work. In the study of animal and human behavior, experimental protocols conducted in the lab are the most reliable means by which scientists can operationalize behaviors using controlled and parameterized setups. However, whether observations in the lab fully generalize in the real world remain legitimately disputed. The notion of "experimental design" was originally intended to ensure the generalizability of experimental findings to real-world situations. Experiments in the wild are more frequently explored and significant technological advances have been made allowing mobile neuroimaging. Yet some methodological limitations remain when testing scientific hypotheses in ecological conditions. Herein, we discuss the limitations of inferential processes derive from empirical observations in the wild. The multi-causal property of an ecological situation often lacks controls, and this major concern may prevent the replication and the reliability of behavioral observations. We discuss the epistemological and historical grounds of the induction process for behavioral and cognitive neurosciences and provide some possible heuristics for In situ experimental designs compatible with psychophysics in the wild.


Assuntos
Neurociência Cognitiva , Neurociências , Humanos , Animais , Reprodutibilidade dos Testes
20.
Philos Ethics Humanit Med ; 18(1): 17, 2023 Nov 09.
Artigo em Inglês | MEDLINE | ID: mdl-37946225

RESUMO

BACKGROUND: Neuroscientific approaches have historically triggered changes in the conception of creativity and artistic experience, which can be revealed by noting the intersection of these fields of study in terms of variables such as global trends, methodologies, objects of study, or application of new technologies; however, these neuroscientific approaches are still often considered as disciplines detached from the arts and humanities. In this light, the question arises as to what evidence the history of neurotechnologies provides at the intersection of creativity and aesthetic experience. METHODS: We conducted a century-long bibliometric analysis of key parameters in multidisciplinary studies published in the Scopus database. Screening techniques based on the PRISMA method and advanced data analysis techniques were applied to 3612 documents metadata from the years 1922 to 2022. We made graphical representations of the results applying algorithmic and clusterization processes to keywords and authors relationships. RESULTS: From the analyses, we found a) a shift from a personality-focus quantitative analysis to a field-focus qualitative approach, considering topics such as art, perception, aesthetics and beauty; b) The locus of interest in fMRI-supported neuroanatomy has been shifting toward EEG technologies and models based on machine learning and deep learning in recent years; c) four main clusters were identified in the study approaches: humanistic, creative, neuroaesthetic and medical; d) the neuroaesthetics cluster is the most central and relevant, mediating between creativity and neuroscience; e) neuroaesthetics and neuroethics are two of the neologism that better characterizes the challenges that this convergence of studies will have in the next years. CONCLUSIONS: Through a longitudinal analysis, we evidenced the great influence that neuroscience is having on the thematic direction of the arts and humanities. The perspective presented shows how this field is being consolidated and helps to define it as a new opportunity of great potential for future researchers.


Assuntos
Arte , Neurociências , Ciências Humanas , Cognição , Criatividade
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