Effort cost of harvest affects decisions and movement vigor of marmosets during foraging.

ABSTRACT: Our decisions are guided by how we perceive the value of an option, but this evaluation also affects how we move to acquire that option. Why should economic variables such as reward and effort alter the vigor of our movements? In theory, both the option that we choose and the vigor with which we move contribute to a measure of fitness in which the objective is to maximize rewards minus efforts, divided by time. To explore this idea, we engaged marmosets in a foraging task in which on each trial they decided whether to work by making saccades to visual targets, thus accumulating food, or to harvest by licking what they had earned. We varied the effort cost of harvest by moving the food tube with respect to the mouth. Theory predicted that the subjects should respond to the increased effort

SUBMITTER: Hage P 

PROVIDER: S-EPMC10715725 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature