Mechanistic account of the left auditory cortex for tone-matching in schizophrenia: A pilot transcranial random noise stimulation (tRNS) sham-controlled study.
Asian J Psychiatr
; 92: 103879, 2024 Feb.
Article
em En
| MEDLINE
| ID: mdl-38157711
ABSTRACT
OBJECTIVE:
Deficits in the ability to match tones following brief delay and their contribution to higher-order cognitive alterations have been repeatedly documented in schizophrenia. The aim was to explore if left fronto-temporal high-frequency transcranial random noise stimulation (hf-tRNS), with electrodes placed over brain regions involved in tone-matching would significantly modulate performances in participants with schizophrenia.METHODS:
In a randomized, double-blind sham-controlled study, 10 participants with schizophrenia were allocated to receive ten sessions of either active or sham hf-tRNS. The anode was placed over the left prefrontal cortex and the cathode over the left temporoparietal junction. A tone-matching task was administered before and after the hf-tRNS.RESULTS:
We calculated the changes in tone-matching performance before and after hf-tRNS session in each group. A significant between-group difference was observed for the difficult tone-matching conditions (W= 14.500, p = 0.032), with tone-matching improvement in the sham group and no improvement in the active group.DISCUSSION:
hf-tRNS could disrupt the test-retest learning effect in the tone-matching task in individuals with schizophrenia. It is likely that this disruption resulted from cathodal-induced inhibition of the functional coupling between auditory cortical areas that correlates with tone-matching performance in patients.CONCLUSION:
The findings contribute to our understanding of hf-tRNS effects on early auditory processing in schizophrenia.Palavras-chave
Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Esquizofrenia
/
Córtex Auditivo
/
Estimulação Transcraniana por Corrente Contínua
Limite:
Humans
Idioma:
En
Ano de publicação:
2024
Tipo de documento:
Article