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Abstract:
Music produces altered states of consciousness and effects
cognitive processes,but neural basis of these responses is not
clear.The effects of music were studied on EEG and P300 responses
in 2 subjects each in 6 and 10 sessions respectively. All the 4
subjects listened to their favourite melodies.The EEG was recorded
before, during and after the music but P300 responses were elicited
after 5 min(s) of playing/silent singing. A global high alpha index
and non reactive EEG to the external stimuli was seen during the
playing of music.The P300 responses were obtained by the "odd-ball"
paradigm after exposure to music. Responses of 300 stimuli were
averaged. The playing and silent singing of a favourite melody
produced reduction in latency of P300 responses by 60 and 34 msec
respectively. The EEG responses depict an intense concentration on
music, exclusion of distraction by the external stimuli and
induction of a relaxed state.Changes in P300 responses may be a
sign of facilitation of cognitive neural processes by music.
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