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1.
Eur Arch Psychiatry Clin Neurosci ; 271(8): 1503-1511, 2021 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-33594521

RESUMO

Prospective memory (PM) refers to the ability to remember to carry out a delayed intention in the future. Evidence suggests that emotionally salient cues can enhance PM functions in healthy population, but whether the benefit exists in schizophrenia and bipolar patients remains unclear. This study aimed to examine and compare the potential enhancement effect of emotional PM cues in schizophrenia patients and bipolar patients. Twenty-eight clinically stable schizophrenia participants, 26 euthymic bipolar participants and 29 controls completed a computerized PM task involving PM cues with different types of valences (i.e., positive, neutral and negative). All the three groups showed better PM performance when negative PM cues were presented compared with positive and neutral PM cues. The sizes of the enhancement effects of negative PM cues were large (all Cohen's d ≥ 1.00) and comparable across three groups. Our findings suggested that patients with schizophrenia and bipolar disorders could benefit from negative PM cues to an extent similar to healthy individuals, thus extended the notion of psychosis continuum to the important area of emotion-cognition interaction.


Assuntos
Transtorno Bipolar , Memória Episódica , Esquizofrenia , Transtorno Bipolar/fisiopatologia , Estudos de Casos e Controles , Sinais (Psicologia) , Emoções/fisiologia , Humanos , Esquizofrenia/fisiopatologia
2.
Cogn Neuropsychiatry ; 25(2): 126-138, 2020 03.
Artigo em Inglês | MEDLINE | ID: mdl-31856651

RESUMO

Introduction: Evidence suggests that schizophrenia patients have olfactory dysfunctions, but the relationship between olfactory identification, hedonic judgement, and negative symptomatology remains unclear. Few studies have investigated whether co-activation of pleasant and unpleasant emotions are more prevalent in schizophrenia patients.Methods: Thirty schizophrenia outpatients with prominent negative symptoms (PNS), 30 outpatients without PNS, and 30 controls completed the University of Pennsylvania Smell Identification Test, and were asked to identify the odourants and to rate their emotions. The effects of gender and medications on olfactory function were examined.Results: Schizophrenia patients exhibited olfactory identification impairments, even after accounting for gender and medication effects. Patients with PNS demonstrated larger magnitude of deficit than those without. Patients with PNS reported less pleasure to positive-valenced odourants, and less unpleasantness to negative-valenced odourants than controls. Olfactory anhedonia in patients with PNS disappeared after controlling for medication effect. Schizophrenia patients do not exhibit affective ambivalence in olfaction.Conclusions: Schizophrenia patients with PNS exhibit deficits in olfactory identification and hedonic judgement, even after controlling for gender and medication effects. Our findings support the close relationship between olfactory dysfunctions and negative symptoms. Further studies should investigate the effect of dopamine-blocking agents on the olfactory hedonic judgment in schizophrenia patients.


Assuntos
Anedonia/fisiologia , Julgamento/fisiologia , Transtornos do Olfato/fisiopatologia , Transtornos do Olfato/psicologia , Esquizofrenia/fisiopatologia , Psicologia do Esquizofrênico , Adulto , Emoções/fisiologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Odorantes/análise , Transtornos do Olfato/diagnóstico , Esquizofrenia/diagnóstico , Olfato/fisiologia
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