Note
Thesis (M.A.)--Florida Atlantic University, 1982.
Member of
Contributors
Publisher
Florida Atlantic University
Date Issued
1982
Description
Sokolov's (1963) hypothesis of selective extinction of the
orienting response accounts for the phenomenon of dishabituation by a
discrepancy between immediate sensory input and a stored template of a
habituated stimulus. The "oddball" stimulus procedure often used to
elicit the P300 evoked potential waveform bears resemblance to a
habituation-dishabituation paradigm. In the present experiment
subjects were habituated to a 70 dB tone burst which was then occasionally
replaced by 50, 60, 80 or 90 dB stimuli. According to a selective
extinction model of the P300, equal absolute amounts of stimulus change
should evoke equal amplitude waveforms. While the decreased intensity
stimuli did evoke a P300, the largest P300s were associated with an
intensity increase. The N200 component was seen to be largest with
intensity decrease. It is suggested that the N200 is the evoked
potential correlate of discrepancy detection which can be obscured by
an intensity-driven P300.
orienting response accounts for the phenomenon of dishabituation by a
discrepancy between immediate sensory input and a stored template of a
habituated stimulus. The "oddball" stimulus procedure often used to
elicit the P300 evoked potential waveform bears resemblance to a
habituation-dishabituation paradigm. In the present experiment
subjects were habituated to a 70 dB tone burst which was then occasionally
replaced by 50, 60, 80 or 90 dB stimuli. According to a selective
extinction model of the P300, equal absolute amounts of stimulus change
should evoke equal amplitude waveforms. While the decreased intensity
stimuli did evoke a P300, the largest P300s were associated with an
intensity increase. The N200 component was seen to be largest with
intensity decrease. It is suggested that the N200 is the evoked
potential correlate of discrepancy detection which can be obscured by
an intensity-driven P300.
Language
Type
Form
Extent
76 p.
Subject (Topical)
Identifier
14125
Additional Information
Thesis (M.A.)--Florida Atlantic University, 1982.
Charles E. Schmidt College of Science
FAU Electronic Theses and Dissertations Collection
Date Backup
1982
Date Text
1982
Date Issued (EDTF)
1982
Extension
FAU
FAU
admin_unit="FAU01", ingest_id="ing1508", creator="staff:fcllz", creation_date="2007-07-19 02:08:37", modified_by="staff:fcllz", modification_date="2011-01-06 13:09:06"
IID
FADT14125
Issuance
monographic
Organizations
Attributed name: Florida Atlantic University
Attributed name: Charles E. Schmidt College of Science
Attributed name: Department of Psychology
Person Preferred Name
JASIUKAITIS, PAUL ALEXANDER
Graduate College
Physical Description
76 p.
application/pdf
Title Plain
EVOKED POTENTIAL CORRELATES OF STIMULUS NOVELTY
Use and Reproduction
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Origin Information
1982
monographic
Boca Raton, FL
Florida Atlantic University
Physical Location
Florida Atlantic University Libraries
Place
Boca Raton, FL
Sub Location
Digital Library
Title
EVOKED POTENTIAL CORRELATES OF STIMULUS NOVELTY
Other Title Info
EVOKED POTENTIAL CORRELATES OF STIMULUS NOVELTY