Dysfunctional cerebello-cerebral network associated with vocal emotion recognition impairments

Area of Science:

• Neuroscience
• Cognitive Psychology
• Neurology

Background:

• Vocal emotion recognition is vital for understanding emotional states.
• Cerebellar dysfunction is known to impair vocal emotion recognition.
• The role of the cerebellum in large-scale brain networks for emotional prosody remains underexplored.

Purpose of the Study:

• To investigate the functional integration of the cerebellum in the brain network for emotional prosody recognition.
• To explore the lesional correlates of vocal emotion recognition deficits in patients with cerebellar lesions.

Main Methods:

• Administered an emotional prosody recognition task to patients with right vs. left cerebellar lesions and controls.
• Employed network-based lesion-symptom mapping, combining neuropsychological lesion data with brain connectome data.

Main Results:

• Patients showed impaired recognition of neutral, negative, and sadness prosody.
• Right cerebellar lesions correlated with poorer sadness recognition.
• Sadness recognition was linked to a network connecting the cerebellum with left frontal, temporal, and parietal cortices.

Conclusions:

• A corticocerebellar network is implicated in vocal emotion decoding.
• This network operates on a fine temporal scale, crucial for processing vocal emotional cues.
• Specific cerebellar lesions impact distinct aspects of vocal emotion processing.