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Exploring the nature of the P300 in normal hearing adults in response to filtered words

Waechter, Sebastian (2013) AUDM81 20131
Logopedics, Phoniatrics and Audiology
Abstract
The present study explored the nature of the auditory P300 in response to filtered
words in ten normal hearing adults. P300 waveforms were elicited by a classic
oddball paradigm, and recorded using a net of 128 electrodes (HydroCel Geodesic
Sensor Net 128 1.0.). P300 waveforms from central, parietal, temporal right and
temporal left regions were selected for data collection. P300 latencies and amplitudes
for the largest deflection distinguishing responses to filtered from unfiltered words
between 248 and 652 ms post stimuli were collected from each electrode in each
region and these values were averaged obtain electrode group values. All filtered
versions of the word successfully elicited P300 waveforms at all four recording
... (More)
The present study explored the nature of the auditory P300 in response to filtered
words in ten normal hearing adults. P300 waveforms were elicited by a classic
oddball paradigm, and recorded using a net of 128 electrodes (HydroCel Geodesic
Sensor Net 128 1.0.). P300 waveforms from central, parietal, temporal right and
temporal left regions were selected for data collection. P300 latencies and amplitudes
for the largest deflection distinguishing responses to filtered from unfiltered words
between 248 and 652 ms post stimuli were collected from each electrode in each
region and these values were averaged obtain electrode group values. All filtered
versions of the word successfully elicited P300 waveforms at all four recording
locations in the form of large, vertex-positive deflections, which differed significantly
(p<0.05) compared to the electrophysiological responses to the unfiltered stimulus.
However, among the responses to the different filtered versions of the stimulus the
overall tendency was that statistical differences could not be seen, neither in terms of
amplitudes or latencies. The lack of substantial change in the P300 waveforms elicited
by the different filtered versions of the stimulus word suggests the use of the P300 as
a measure of filtered word performance is limited to the detection of a filtered version
of a word and not the degree (Less)
Please use this url to cite or link to this publication:
author
Waechter, Sebastian
supervisor
organization
course
AUDM81 20131
year
type
H1 - Master's Degree (One Year)
subject
keywords
P300, LPFS test, CAPD, ERP, Filtered words, Language Impairment
language
English
id
4251688
date added to LUP
2014-01-22 09:45:19
date last changed
2014-01-22 09:45:19
@misc{4251688,
  abstract     = {The present study explored the nature of the auditory P300 in response to filtered
words in ten normal hearing adults. P300 waveforms were elicited by a classic
oddball paradigm, and recorded using a net of 128 electrodes (HydroCel Geodesic
Sensor Net 128 1.0.). P300 waveforms from central, parietal, temporal right and
temporal left regions were selected for data collection. P300 latencies and amplitudes
for the largest deflection distinguishing responses to filtered from unfiltered words
between 248 and 652 ms post stimuli were collected from each electrode in each
region and these values were averaged obtain electrode group values. All filtered
versions of the word successfully elicited P300 waveforms at all four recording
locations in the form of large, vertex-positive deflections, which differed significantly
(p<0.05) compared to the electrophysiological responses to the unfiltered stimulus.
However, among the responses to the different filtered versions of the stimulus the
overall tendency was that statistical differences could not be seen, neither in terms of
amplitudes or latencies. The lack of substantial change in the P300 waveforms elicited
by the different filtered versions of the stimulus word suggests the use of the P300 as
a measure of filtered word performance is limited to the detection of a filtered version
of a word and not the degree},
  author       = {Waechter, Sebastian},
  keyword      = {P300,LPFS test,CAPD,ERP,Filtered words,Language Impairment},
  language     = {eng},
  note         = {Student Paper},
  title        = {Exploring the nature of the P300 in normal hearing adults in response to filtered words},
  year         = {2013},
}