Bursts and Heavy Tails in Temporal and Sequential Dynamics of Foraging Decisions

被引:9
|
作者
Jung, Kanghoon [1 ,2 ]
Jang, Hyeran [1 ]
Kralik, Jerald D. [2 ]
Jeong, Jaeseung [1 ]
机构
[1] Korea Adv Inst Sci & Technol, Dept Bio & Brain Engn, Taejon 305701, South Korea
[2] Dartmouth Coll, Dept Psychol & Brain Sci, Hanover, NH 03755 USA
关键词
SELF-ORGANIZED CRITICALITY; MOTIVATIONAL CONTROL; MATCHING BEHAVIOR; FEEDING-BEHAVIOR; ACTION SELECTION; HUMAN STRIATUM; REWARD; PATTERNS; SIGNALS; MODELS;
D O I
10.1371/journal.pcbi.1003759
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
A fundamental understanding of behavior requires predicting when and what an individual will choose. However, the actual temporal and sequential dynamics of successive choices made among multiple alternatives remain unclear. In the current study, we tested the hypothesis that there is a general bursting property in both the timing and sequential patterns of foraging decisions. We conducted a foraging experiment in which rats chose among four different foods over a continuous two-week time period. Regarding when choices were made, we found bursts of rapidly occurring actions, separated by time-varying inactive periods, partially based on a circadian rhythm. Regarding what was chosen, we found sequential dynamics in affective choices characterized by two key features: (a) a highly biased choice distribution; and (b) preferential attachment, in which the animals were more likely to choose what they had previously chosen. To capture the temporal dynamics, we propose a dual-state model consisting of active and inactive states. We also introduce a satiation-attainment process for bursty activity, and a non-homogeneous Poisson process for longer inactivity between bursts. For the sequential dynamics, we propose a dual-control model consisting of goal-directed and habit systems, based on outcome valuation and choice history, respectively. This study provides insights into how the bursty nature of behavior emerges from the interaction of different underlying systems, leading to heavy tails in the distribution of behavior over time and choices.
引用
收藏
页数:13
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