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Basi neurali del controllo cognitivo sull’inibizione del movimento

Basi neurali del controllo cognitivo sull’inibizione del movimento

Kitty Zhe Xu

55,28 €
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Editorial:
KS OmniScriptum Publishing
Año de edición:
2024
Materia
Psicología
ISBN:
9786207680412
55,28 €
IVA incluido
Disponible

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Una funzione critica del controllo esecutivo è la capacità di inibire o modificare in modo flessibile un piano d’azione quando questo è contestualmente inappropriato. Utilizzando la fMRI umana e un compito di segnali di stop (SST) dipendente dal contesto, abbiamo riscontrato una doppia dissociazione funzionale tra la corteccia prefrontale ventrolaterale destra (rVLPFC) e il campo oculare frontale bi-laterale (FEF). L’attivazione della rVLPFC era associata al rilevamento e alla codifica del significato dei segnali di stop e all’inibizione della risposta, mentre l’attività del FEF rifletteva l’output motorio indipendentemente dalla mappatura della risposta allo stimolo o dal contesto. Inoltre, la rappresentazione del significato del segnale di stop e l’inibizione della risposta erano rappresentate in regioni separate della rVLPFC. Questi risultati sono stati ulteriormente convalidati da registrazioni elettrofisiologiche nella rVLPFC e nella FEF di una scimmia. I risultati suggeriscono che l’inibizione di un comportamento pianificato non è governata da un unico sistema cerebrale, come era stato proposto in precedenza, ma dipende invece da due processi neuralmente distinti.

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