The effect of a movie soundtrack on auditory event-related potentials in children, adolescents, and adults.
OBJECTIVE
To determine if an audible movie soundtrack has a degrading effect on the auditory P1, N1, P2, N2, or mismatch negativity (MMN) event-related potentials (ERPs) in children, adolescents, or adults.


METHODS
The auditory ERPs of 36 children, 32 young adolescents, 19 older adolescents, and 10 adults were measured while they watched a movie in two conditions: with an audible soundtrack and with a silent soundtrack.


RESULTS
In children and adolescents, the audible movie soundtrack had a significant impact on amplitude, latency or split-half reliability of the N1, P2, N2, and MMN ERPs. The audible soundtrack had minimal impact on the auditory ERPs of adults.


CONCLUSIONS
These findings challenge previous claims that an audible soundtrack does not degrade the auditory ERPs of children. Further, the reliability of the MMN is poorer than P1, N1, P2, and N2 peaks in both sound-off and sound-on conditions.


CONCLUSIONS
Researchers should be cautious about using an audible movie soundtrack when measuring auditory ERPs in younger listeners.
Mahajan
Yatin
Y
Macquarie Centre for Cognitive Science, Macquarie University, Sydney, NSW 2109, Australia. yatin.mahajan@maccs.mq.edu.au
McArthur
Genevieve
G
D000161:Acoustic Stimulation; D000293:Adolescent; D000328:Adult; D000367:Age Factors; D001288:Attention / Q000502:physiology*; D001307:Auditory Perception / Q000502:physiology*; D002540:Cerebral Cortex / Q000502:physiology*; D002648:Child; D004569:Electroencephalography; D005072:Evoked Potentials, Auditory / Q000502:physiology*; D006801:Humans; D009040:Motion Pictures; D011930:Reaction Time / Q000502:physiology