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To fight or not to fight? Individual...

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To fight or not to fight? Individual recognition and social memory in golden hamsters (Mesocricetus auratus).

Record Type:	Language materials, printed : Monograph/item
Title/Author:	To fight or not to fight? Individual recognition and social memory in golden hamsters (Mesocricetus auratus)./
Author:	Lai, Wen-Sung.
Description:	212 p.
Notes:	Adviser: Robert E. Johnston.
Contained By:	Dissertation Abstracts International64-09B.
Subject:	Biology, Neuroscience. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoeng/servlet/advanced?query=3104446
ISBN:	9780496520138

To fight or not to fight? Individual recognition and social memory in golden hamsters (Mesocricetus auratus).
Lai, Wen-Sung.

To fight or not to fight? Individual recognition and social memory in golden hamsters (Mesocricetus auratus). - 212 p.

Adviser: Robert E. Johnston.

Thesis (Ph.D.)--Cornell University, 2003.

All social relationships rely upon an organism's ability to remember conspecifics. The ability to recognize individual conspecifics is crucial in many aspects of an animal's social behavior and this type of memory is critical for the stability of relationships and survival. Individual recognition requires the association of individually distinct information with memories of past experiences. Such recognition may be a specially evolved type of learning and memory. To further understand this complex cognitive function, we developed new behavioral methods for the investigation of individual recognition in golden hamsters and used these methods to study social memory retrieval after aggressive and sexual interactions. In the first 3 studies, losers of fights recognized their opponents after aggressive encounters and remembered this information for at least 7 days. Our behavioral data also indicate that losers can discriminate differences between two familiar males and behave differently toward them based on past experiences. To ascertain the possible neural circuits involved in individual recognition, immunohistochemistry was carried out to localize c-Fos and Egr-1 expression in the losers' brain after the recognition and memory retrieval test. Differences in c-Fos and Egr-1 expression across groups are particularly interesting in the basolateral amygdala (the BLA), dorsal hippocampal CA1 region (the DHCA1), and perirhinal cortex (the PRh). Our data suggest that the perirhinal cortex may be a zone of convergence to receive sensory information about social stimuli from association cortices and to interact with memory from the hippocampus (e.g. the DHCA1) and emotion from the amygdala (e.g. the BLA). The fourth (last) study indicates that the behavioral method mentioned above can also be used to assess hamsters' recognition in a sexual context. The results show that hamsters have the ability to recognize familiar versus novel sexual partners for at least 1 week after mating and they show preferences for novel mates if they copulated successfully. Together, these studies provide a basis for further study of the neural circuits underlying individual recognition. These methods may be useful to further understand human social memory.

ISBN: 9780496520138Subjects--Topical Terms:

1017680
Biology, Neuroscience.

To fight or not to fight? Individual recognition and social memory in golden hamsters (Mesocricetus auratus).
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020 $a 9780496520138
035 $a (UMI)AAI3104446
035 $a AAI3104446
040 $a UMI $c UMI
100 1 $a Lai, Wen-Sung. $3 1025132
245 1 0 $a To fight or not to fight? Individual recognition and social memory in golden hamsters (Mesocricetus auratus).
300 $a 212 p.
500 $a Adviser: Robert E. Johnston.
500 $a Source: Dissertation Abstracts International, Volume: 64-09, Section: B, page: 4670.
502 $a Thesis (Ph.D.)--Cornell University, 2003.
520 $a All social relationships rely upon an organism's ability to remember conspecifics. The ability to recognize individual conspecifics is crucial in many aspects of an animal's social behavior and this type of memory is critical for the stability of relationships and survival. Individual recognition requires the association of individually distinct information with memories of past experiences. Such recognition may be a specially evolved type of learning and memory. To further understand this complex cognitive function, we developed new behavioral methods for the investigation of individual recognition in golden hamsters and used these methods to study social memory retrieval after aggressive and sexual interactions. In the first 3 studies, losers of fights recognized their opponents after aggressive encounters and remembered this information for at least 7 days. Our behavioral data also indicate that losers can discriminate differences between two familiar males and behave differently toward them based on past experiences. To ascertain the possible neural circuits involved in individual recognition, immunohistochemistry was carried out to localize c-Fos and Egr-1 expression in the losers' brain after the recognition and memory retrieval test. Differences in c-Fos and Egr-1 expression across groups are particularly interesting in the basolateral amygdala (the BLA), dorsal hippocampal CA1 region (the DHCA1), and perirhinal cortex (the PRh). Our data suggest that the perirhinal cortex may be a zone of convergence to receive sensory information about social stimuli from association cortices and to interact with memory from the hippocampus (e.g. the DHCA1) and emotion from the amygdala (e.g. the BLA). The fourth (last) study indicates that the behavioral method mentioned above can also be used to assess hamsters' recognition in a sexual context. The results show that hamsters have the ability to recognize familiar versus novel sexual partners for at least 1 week after mating and they show preferences for novel mates if they copulated successfully. Together, these studies provide a basis for further study of the neural circuits underlying individual recognition. These methods may be useful to further understand human social memory.
590 $a School code: 0058.
650 4 $a Biology, Neuroscience. $3 1017680
650 4 $a Psychology, Psychobiology. $3 1017821
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773 0 $t Dissertation Abstracts International $g 64-09B.
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790 1 0 $a Johnston, Robert E., $e advisor
791 $a Ph.D.
792 $a 2003
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoeng/servlet/advanced?query=3104446