Attenuated heartbeat-evoked potentials in functional neurological disorder.

ABSTRACT: The pathophysiology of functional neurological disorders (FND) has been discussed to include dysfunctions in interoception, the modality about perceiving and processing internal bodily signals. However, findings on abnormal interoception in FND have been inconsistent and mainly limited to measures of accuracy and self-report. Interoceptive neuronal markers have only been investigated in specific symptoms, and interoceptive attentional modulation has been completely overlooked. In a cohort of patients with mixed FND (N = 44) and sex- and age-matched healthy controls (N = 48), we set out to assess first, interoceptive accuracy with an adapted version of the heartbeat counting task; secondly, interoceptive self-report with two different questionnaires (Multidimensional Assessmen

SUBMITTER: Stoffel N 

PROVIDER: S-EPMC12810052 | biostudies-literature | 2026

REPOSITORIES: biostudies-literature