The cortical processing of perceived emotion: a DC-potential study on affective speech prosody.

摘要: DIRECT current (DC) components of the EEG signal were recorded in 16 right-handed subjects during presentation pairs declarative sentences with either happy, sad or neutral intonation. Each stimulus pair had identical wording, but differed at acoustic level pitch (fundamental frequency = F0) range duration stressed syllables. Subjects asked, first, to identify emotional category each sentence and, second, indicate utterance displaying stronger expressiveness. Stimuli happy intonation, as well F0-manipulated sentences, yielded a significantly lateralized negativity towards right hemisphere (RH). Compared F0-varied utterances, discrimination time-manipulated stimuli resulted reduced amplitudes, predominantly over RH areas. These results corroborate suggestion dominant role for evaluation significance sensory input.