Body

Multimodal Evidence for an Auditory-Insula-Limbic Pathway Supporting Misophonia as a Distinct Condition

In a 2022 study, Grossini et al. comprehensively assessed misophonia using physiological (HRV and GSC), psychometric, and neural (fMRI) measures in response to auditory triggers. They found that individuals with misophonia showed increased sympathetic activation, including elevated LF, LF/HF ratio, stress indices, and GSC responses, while controls showed stronger parasympathetic responses. Psychometrically, the misophonia group scored higher on all misophonia-specific scales, showed no significant differences in general psychopathology, and had lower resilience. fMRI results showed distinct activation in the auditory cortex, temporal cortex, premotor areas, limbic regions including the insula, hippocampus, cingulate cortex, ventromedial prefrontal cortex, and the cerebellum, which were largely absent in controls. The authors concluded that misophonia involves a specific auditory–insula–limbic pathway and may be classified as a distinct clinical condition (Grossini et al., 2022)