Emotional Memory and Electrocortical Indeces of Arousal

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Material Information

Title:
Emotional Memory and Electrocortical Indeces of Arousal Influence of Age and Parkinson Disease
Physical Description:
1 online resource (80 p.)
Language:
english
Creator:
Mangal, Paul C
Publisher:
University of Florida
Place of Publication:
Gainesville, Fla.
Publication Date:

Thesis/Dissertation Information

Degree:
Master's ( M.S.)
Degree Grantor:
University of Florida
Degree Disciplines:
Psychology, Clinical and Health Psychology
Committee Chair:
BOWERS,DAWN
Committee Co-Chair:
WIENS,BRENDA A
Committee Members:
PRICE,CATHERINE ELIZABETH
PEREIRA,DEIDRE B

Subjects

Subjects / Keywords:
emotion -- erp -- memory -- parkinsons -- psychophysiology
Clinical and Health Psychology -- Dissertations, Academic -- UF
Genre:
Psychology thesis, M.S.
bibliography   ( marcgt )
theses   ( marcgt )
government publication (state, provincial, terriorial, dependent)   ( marcgt )
born-digital   ( sobekcm )
Electronic Thesis or Dissertation

Notes

Abstract:
Background: The emotional enhancement effect is the tendency for emotional material to be recalled more readily than neutral material. This study investigated the emotional enhancement in Parkinson patient (PD), older adults (OA), and younger adults (YA) in relation to electrocortical reactivity (i.e., late positive potential: LPP). Based on previous findings that individuals with PD failed to show normal emotional memory enhancement (Jordan, 2010), the current study was designed to learn whether decreased arousal/attention at the time of encoding was associated with dysfunctional emotional memory. Methods: Participants included 24 individuals with idiopathic Parkinsons disease, 12 older adults, and 16 younger adults. Participants viewed 48 high and low arousing pictures (pleasant, unpleasant, neutral) from the International Affective Picture System (IAPS) while scalp recorded LPPs were measured. After a 20-30 minute delay, participants were asked to recall as many pictures as possible. The major dependent variables were number of pictures recalled and the amplitude of the LPP. Results: Even though Parkinsons patients recalled significantly fewer pictures than older and younger adults, they displayed emotional enhancement effects. Despite displaying enhanced recall for highly arousing pictures, the LPP response to highly arousing pictures was attenuated in PD relative to controls. Third, the subsequent memory effect was found to be significant for older adults but only at a trend level of significance for younger adults and PD patients. Fourth, a subgroup of PD patients with high levels of apathy did not exhibit emotional enhancement in addition to attenuated LPP amplitudes. Discussion: Contrary to the results of Jordan (2010), the finding that PDs display emotional memory might suggest that the hippocampal-memory system in non-apathetic PD patients is sufficiently modulated by amygdalar activity/arousal. In contrast, the amygdala of apathetic PD patients may not be able to adequately modulate the hippocampus in response to emotional events. The dissociation between behavioral and physiological data might indicate that the LPP does not measure amygdala-mediated related arousal that activates the memory system. Instead the LPP could be measuring emotion processing occurring in other cortical areas. Findings will be discussed in terms of neural mechanisms, neuropsychiatric symptoms and implications for daily functioning.
General Note:
In the series University of Florida Digital Collections.
General Note:
Includes vita.
Bibliography:
Includes bibliographical references.
Source of Description:
Description based on online resource; title from PDF title page.
Source of Description:
This bibliographic record is available under the Creative Commons CC0 public domain dedication. The University of Florida Libraries, as creator of this bibliographic record, has waived all rights to it worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law.
Statement of Responsibility:
by Paul C Mangal.
Thesis:
Thesis (M.S.)--University of Florida, 2014.
Local:
Adviser: BOWERS,DAWN.
Local:
Co-adviser: WIENS,BRENDA A.
Electronic Access:
RESTRICTED TO UF STUDENTS, STAFF, FACULTY, AND ON-CAMPUS USE UNTIL 2016-05-31

Record Information

Source Institution:
UFRGP
Rights Management:
Applicable rights reserved.
Classification:
lcc - LD1780 2014
System ID:
UFE0046746:00001