National Acoustic Laboratories Library
Auditory-evoked cortical activity: contribution of brain noise, phase locking, and spectral power Harris, Kelly C....[et.al.]

Background: The N1-P2 is an obligatory cortical response
that can reflect the representation of spectral and temporal
characteristics of an auditory stimulus. Traditionally,
mean amplitudes and latencies of the prominent peaks
in the averaged response are compared across experimental
conditions. Analyses of the peaks in the averaged
response only reflect a subset of the data contained within
the electroencephalogram (EEG) signal. We used singletrial
analyses techniques to identify the contribution of
brain noise, neural synchrony, and spectral power to the
generation of P2 amplitude and how these variables may
change across age group. This information is important
for appropriate interpretation of event-related potentials
(ERPs) results and in understanding of age-related neural
pathologies.

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