Social decision-making in Parkinson's disease.

Introduction: Parkinson's Disease (PD) commonly affects cognition and communicative functions, including the ability to perceive socially meaningful cues from nonverbal behavior and spoken language (e.g., a speaker's tone of voice).

Cortical processing of speaker politeness: Tracking the dynamic effects of voice tone and politeness markers.

Information in the tone of voice alters social impressions and underlying brain activity as listeners evaluate the interpersonal relevance of utterances. Here, we presented requests that expressed politeness distinctions through the voice (polite/rude) and explicit linguistic markers (half of the requests began with ). Thirty participants performed a social perception task (rating friendliness) while their electroencephalogram was recorded.

Immediate online use of prosody reveals the ironic intentions of a speaker: neurophysiological evidence.

In social interactions, speakers often use their tone of voice ("prosody") to communicate their interpersonal stance to pragmatically mark an ironic intention (e.g., sarcasm).