The present experimental study aimed to investigate the role of the cerebellum in empathic processes. Although traditionally associated with motor control, the cerebellum is now recognized as a structure also involved in cognitive and affective processes. To explore this contribution, transcranial alternating current stimulation (tACS) was applied over the cerebellar vermis at different frequencies (theta, gamma, and sham), while participants performed an Empathic Accuracy (EA) task requiring continuous evaluation of the emotional valence of autobiographical positive and negative video clips. During the task, heart rate variability (HRV) indices were recorded as physiological markers of emotional regulation. Results showed that gamma-band cerebellar tACS stimulation was associated with an increment in EA for negative videos and with a decrement in EA for positive videos. Furthermore, gamma-band cerebellar tACS stimulation was associated with overall increased HRV. These findings suggest a potential contribution of the cerebellum to mind–body integration and emotional resonance processes.
Il presente studio sperimentale si propone di indagare il ruolo del cervelletto nei processi empatici. Sebbene tradizionalmente associato al controllo motorio, il cervelletto è oggi riconosciuto come una struttura coinvolta anche in processi cognitivi e affettivi. Per esplorare questo contributo, è stata utilizzata la stimolazione transcranica a corrente alternata (tACS), applicata sul verme cerebellare a diverse frequenze (theta, gamma e sham), mentre i partecipanti eseguivano un compito di Empathic Accuracy (EA), che prevedeva la valutazione continua della valenza emotiva di video autobiografici positivi e negativi. Durante il compito sono stati registrati indici fisiologici di variabilità della frequenza cardiaca (HRV) come misura della regolazione emotiva. I risultati indicano che la banda gamma è associata a un aumento della EA per i video negativi e una diminuzione della EA per i video positivi. Inoltre, la gamma tACS sul cervelletto ha determinato un aumento della HRV. Questi dati suggeriscono un possibile ruolo del cervelletto nella connessione mente-corpo e nei processi di risonanza emotiva.
Il ruolo del cervelletto nei processi empatici: uno studio tACS
IACULLO, AURORA
2024/2025
Abstract
The present experimental study aimed to investigate the role of the cerebellum in empathic processes. Although traditionally associated with motor control, the cerebellum is now recognized as a structure also involved in cognitive and affective processes. To explore this contribution, transcranial alternating current stimulation (tACS) was applied over the cerebellar vermis at different frequencies (theta, gamma, and sham), while participants performed an Empathic Accuracy (EA) task requiring continuous evaluation of the emotional valence of autobiographical positive and negative video clips. During the task, heart rate variability (HRV) indices were recorded as physiological markers of emotional regulation. Results showed that gamma-band cerebellar tACS stimulation was associated with an increment in EA for negative videos and with a decrement in EA for positive videos. Furthermore, gamma-band cerebellar tACS stimulation was associated with overall increased HRV. These findings suggest a potential contribution of the cerebellum to mind–body integration and emotional resonance processes.| File | Dimensione | Formato | |
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https://hdl.handle.net/20.500.14239/31965