Selective attention increases the temporal precision of the auditory N100 event-related potential

Selective attention increases the amplitude of the averaged N100 event-related potential (ERP). This increase may result from more neurons responding to the stimulus or from the same number of neurons better synchronised with the stimulus, or both. We investigated the synchronization mechanism using...

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Bibliographic Details
Published in:Hearing research 2007-08, Vol.230 (1-2), p.73-79
Main Authors: THORNTON, A. Roger D, HARMER, Matthew, LAVOIE, Brigitte A
Format: Article
Language:English
Subjects:
Acoustic Stimulation
Adolescent
Adult
Algorithms
Attention
Auditory Pathways - physiology
Auditory Perception
Auditory Threshold
Biological and medical sciences
Drug toxicity and drugs side effects treatment
Electroencephalography
Evoked Potentials, Auditory
Female
Humans
Male
Medical sciences
Pharmacology. Drug treatments
Reaction Time
Time Factors
Toxicity: respiratory system, ent, stomatology
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Summary:Selective attention increases the amplitude of the averaged N100 event-related potential (ERP). This increase may result from more neurons responding to the stimulus or from the same number of neurons better synchronised with the stimulus, or both. We investigated the synchronization mechanism using a new response latency jitter measurement algorithm that performed well for all the signal-to-noise ratios obtained in the experiment. We found that the significantly increased N100 amplitude is accounted for by a significantly decreased latency jitter variance for the attended stimuli.
ISSN:0378-5955
1878-5891
DOI:10.1016/j.heares.2007.04.004