examining memory consolidation and reconsolidation in an appetitive pavlovian task

69 Pages·2016·1.1 MB·English

UUnniivveerrssiittyy ooff KKeennttuucckkyy
UUKKnnoowwlleeddggee
Theses and Dissertations--Psychology Psychology
2015
EEXXAAMMIINNIINNGG MMEEMMOORRYY CCOONNSSOOLLIIDDAATTIIOONN AANNDD RREECCOONNSSOOLLIIDDAATTIIOONN
IINN AANN AAPPPPEETTIITTIIVVEE PPAAVVLLOOVVIIAANN TTAASSKK
Jonathan J. Chow
University of Kentucky, [email protected]
Digital Object Identifier: http://dx.doi.org/10.13023/ETD.2016.004
RRiigghhtt cclliicckk ttoo ooppeenn aa ffeeeeddbbaacckk ffoorrmm iinn aa nneeww ttaabb ttoo lleett uuss kknnooww hhooww tthhiiss ddooccuummeenntt bbeenneefifittss yyoouu..
RReeccoommmmeennddeedd CCiittaattiioonn
Chow, Jonathan J., "EXAMINING MEMORY CONSOLIDATION AND RECONSOLIDATION IN AN APPETITIVE
PAVLOVIAN TASK" (2015). Theses and Dissertations--Psychology. 84.
https://uknowledge.uky.edu/psychology_etds/84
This Master's Thesis is brought to you for free and open access by the Psychology at UKnowledge. It has been
accepted for inclusion in Theses and Dissertations--Psychology by an authorized administrator of UKnowledge. For
more information, please contact [email protected].
SSTTUUDDEENNTT AAGGRREEEEMMEENNTT::
I represent that my thesis or dissertation and abstract are my original work. Proper attribution
has been given to all outside sources. I understand that I am solely responsible for obtaining
any needed copyright permissions. I have obtained needed written permission statement(s)
from the owner(s) of each third-party copyrighted matter to be included in my work, allowing
electronic distribution (if such use is not permitted by the fair use doctrine) which will be
submitted to UKnowledge as Additional File.
I hereby grant to The University of Kentucky and its agents the irrevocable, non-exclusive, and
royalty-free license to archive and make accessible my work in whole or in part in all forms of
media, now or hereafter known. I agree that the document mentioned above may be made
available immediately for worldwide access unless an embargo applies.
I retain all other ownership rights to the copyright of my work. I also retain the right to use in
future works (such as articles or books) all or part of my work. I understand that I am free to
register the copyright to my work.
RREEVVIIEEWW,, AAPPPPRROOVVAALL AANNDD AACCCCEEPPTTAANNCCEE
The document mentioned above has been reviewed and accepted by the student’s advisor, on
behalf of the advisory committee, and by the Director of Graduate Studies (DGS), on behalf of
the program; we verify that this is the final, approved version of the student’s thesis including all
changes required by the advisory committee. The undersigned agree to abide by the statements
above.
Jonathan J. Chow, Student
Dr. Michael T. Bardo, Major Professor
Dr. David T. R. Berry, Director of Graduate Studies
EXAMINING MEMORY CONSOLIDATION AND RECONSOLIDATION IN AN
APPETITIVE PAVLOVIAN TASK

____________________________________
THESIS
____________________________________
A thesis submitted in partial fulfillment of the
requirements for the degree of Master of Science in the
College of Liberal Arts and Sciences
at the University of Kentucky

By
Jonathan Jenn-Sheng Chow
Lexington, Kentucky
Directors: Dr. Michael T. Bardo, Professor of Psychology
and Dr. Joshua S. Beckmann, Assistant Professor of Psychology
Lexington, Kentucky
2015
Copyright © Jonathan Jenn-Sheng Chow
EXAMINING MEMORY CONSOLIDATION AND RECONSOLIDATION IN AN
APPETITIVE PAVLOVIAN TASK

____________________________________
THESIS
____________________________________
A thesis submitted in partial fulfillment of the
requirements for the degree of Master of Science in the
College of Liberal Arts and Sciences
at the University of Kentucky

By
Jonathan Jenn-Sheng Chow
Lexington, Kentucky
Co-Directors: Dr. Thomas R. Zentall, Professor of Psychology
and Dr. Mark A. Prendergast, Professor of Psychology
Lexington, Kentucky
2015
Copyright © Jonathan Jenn-Sheng Chow
EXAMINING MEMORY CONSOLIDATION AND RECONSOLIDATION IN AN
APPETITIVE PAVLOVIAN TASK

VOLUME TWO
____________________________________
THESIS
____________________________________
A thesis submitted in partial fulfillment of the
requirements for the degree of Master of Science in the
College of Liberal Arts and Sciences
at the University of Kentucky

By
Jonathan Jenn-Sheng Chow
Lexington, Kentucky
Directors: Dr. Michael T. Bardo, Professor of Psychology
and Dr. Joshua S. Beckmann, Assistant Professor of Psychology
Lexington, Kentucky
2015
Copyright © Jonathan Jenn-Sheng Chow
ABSTRACT OF THESIS

EXAMINING MEMORY CONSOLIDATION AND RECONSOLIDATION IN AN
APPETITIVE PAVLOVIAN TASK

Memory plays an important role in defining how one behaves. The
neurobiological mechanisms of memory have been studied extensively in animal models
and the NMDA glutamate receptor has been identified to play an important role in the
consolidation and reconsolidation of appetitive memories. Certain memories, depending
on what was learned, can function differently and can be more difficult to disrupt based
on a number of factors. Currently, no study has examined whether or not a reward-
predictive stimulus attributed with incentive value is more difficult to disrupt than a
stimulus that functions as a general reward-predictor. To determine the role of the
NMDA receptor on memory consolidation with different functioning reward-predictive
stimuli rats underwent a Pavlovian conditioned approach, where a post-session NMDA
receptor antagonist was administered daily. Furthermore, to determine the role of the
NMDA receptor on memory reconsolidation, another set of rats were trained on a
Pavlovian conditioned approach task, after training was complete rats were presented
with a reward-predictive stimuli followed by an administration of a NMDA receptor
antagonist and then re-tested.

KEYWORDS: Memory, Consolidation, Reconsolidation, Incentive Salience, Pavlovian
Conditioning

___Jonathan Jenn-Sheng Chow____

________January 5, 2015_________
EXAMINING MEMORY CONSOLIDATION AND RECONSOLIDATION IN AN
APPETITIVE PAVLOVIAN TASK

By
Jonathan Jenn-Sheng Chow

______Michael T. Bardo__________
Director of Thesis

_______Joshua S. Beckmann________
Director of Thesis

_______David T. R. Berry__________
Director of Graduate Studies

______January 5, 2015_____________
EXAMINING MEMORY CONSOLIDATION AND RECONSOLIDATION IN AN
APPETITIVE PAVLOVIAN TASK

By
Jonathan Jenn-Sheng Chow

_______Thomas R. Zentall_________
Co-Director of Thesis

______Mark A. Prendergast________
Co-Director of Thesis

_______David T. R. Berry_________
Director of Graduate Studies

______January 5, 2015_____________
ACKNOWLEDGEMENTS
The following thesis, while an individual work, benefited from the insights and
direction from several people. First, I would like to thank my Thesis Chair and mentor
Dr. Michael T. Bardo for providing instructive comments and evaluation at every stage of
the thesis process. Next, I would also like to thank my Thesis co-Chair and co-mentor Dr.
Joshua S. Beckmann for providing insightful and challenging comments at every stage of
the thesis process. Finally, I would like to thank the complete Thesis Committee: Dr.
Thomas R. Zentall and Dr. Mark A. Prendergast for their comments and insightful
feedback which have helped improve this work.
I would also like to thank my colleagues Dr. Justin R. Yates, Virginia G. Weiss,
and Dr. Rebecca S. Hofford for their comments and suggestions during the thesis process.
Furthermore, I would like to thank Emily Denehy and William T. McCuddy for their
technical assistance.
iii
TABLE OF CONTENTS
Acknowledgements ............................................................................................................ iii
List of Figures .................................................................................................................... iv
Chapter 1: Introduction ........................................................................................................1
Background ................................................................................................................1
Memory Formation ....................................................................................................1
Neurobiological Mechanisms of Memory Reconsolidation ......................................4
Drug Memories and Memory Reconsolidation ..........................................................6
Sign-tracking vs. Goal-tracking – Memory Function ..............................................10
Statement of Hypothesis ..........................................................................................11

Chapter 2: Main Experiments ............................................................................................13
Experiment 1: Consolidation ...................................................................................13
Methods..........................................................................................................13
Subjects ................................................................................................13
Apparatus .............................................................................................14
Drug .....................................................................................................15
Procedure .............................................................................................15
Magazine Training .....................................................................16
2-CS PCA Task ..........................................................................16
Memory Consolidation ..............................................................17
Analysis................................................................................................17
Results ............................................................................................................17
Experiment 2: Reconsolidation ................................................................................20
Methods..........................................................................................................20
Subjects ................................................................................................20
Apparatus .............................................................................................20
Drug .....................................................................................................21
Procedure .............................................................................................21
Magazine Training .....................................................................21
2-CS PCA Task ..........................................................................22
Memory Reconsolidation ...........................................................22
Analysis................................................................................................23
Results ............................................................................................................24
Discussion: Experiment 1 and 2 ....................................................................25

Chapter 3: Revisiting Reconsolidation ..............................................................................28
Experiment 3: Reconsolidation – Multiple Stimulus Presentations ........................28
Methods..........................................................................................................28
Subjects ................................................................................................28
Apparatus .............................................................................................29
Drug .....................................................................................................30
Procedure .............................................................................................30
iv