Dynamical decision patterns of preference-based food choice in rats = 쥐에서의 선호도 기반한 먹이 선택의 동역학적 특성에 대한 연구

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One of the important questions in decision making is a seeking a quantitative model to describe the process of decision making referred to an evaluative process of selecting a specific action from a number of alternative choices in a given situation. However, the temporal dynamics of preference-based decision making patterns including their structures and properties, and their neurobiological mechanism have not been fully understood. To examine temporal and sequential features of choice sequence based on flavored food preference test, rats voluntarily chose one of four differently flavored pellets, but nutritionally identical. The choice sequence was classified by its rank of consumption, not by flavor. Scale-free properties were observed from the analysis of intervals that consecutive same choice. Animal’s choice was systematically influenced by the history of past choices. There was positive serial dependence in rat’s choice. The distribution of choice run was characterized as a power-law with exponential cut-off. The exponents of power-law distribution were differently exhibited with rank. This study provides insights into a series of decision making with different degree of preference and reward learning process in animals including humans. These findings further suggest that the dynamic characteristics of flavored food choice can be mediated by association of different neural correlates related to reward processing.
Advisors
Jeong, Jae-Seungresearcher정재승researcher
Description
한국과학기술원 : 바이오및뇌공학과,
Publisher
한국과학기술원
Issue Date
2009
Identifier
308641/325007  / 020043983
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 바이오및뇌공학과, 2009.2, [ iv, 55 p. ]

Keywords

decision making; reward process; sequential dynamics; temporal dynamics; preference; 의사 결정; 보상 과정; 동역학; 선호도; decision making; reward process; sequential dynamics; temporal dynamics; preference; 의사 결정; 보상 과정; 동역학; 선호도

URI
http://hdl.handle.net/10203/27171
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=308641&flag=dissertation
Appears in Collection
BiS-Theses_Master(석사논문)
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