Ventral Striatum Lesions Enhance Stimulus and Response Encoding in Dorsal Striatum
نویسندگان
چکیده
منابع مشابه
Dissociable roles of ventral and dorsal striatum in instrumental conditioning.
Instrumental conditioning studies how animals and humans choose actions appropriate to the affective structure of an environment. According to recent reinforcement learning models, two distinct components are involved: a "critic," which learns to predict future reward, and an "actor," which maintains information about the rewarding outcomes of actions to enable better ones to be chosen more fre...
متن کاملLETTER TOTHE EDITOR Differential functions of ventral and dorsal striatum
Sir, The case study by Vo and colleagues (2014) aims to address the differential roles of ventral versus dorsal striatum in learning, specifically, whether they are essential for learning or simply involved in it. The authors reported a dissociation between action-value (based on the outcomes, values will be assigned to actions) and stimulus-value learning (values will be associated with the st...
متن کاملDissociating contributions of ventral and dorsal striatum to reward learning.
Reward learning plays a central role in decision making and adaptation. Accumulating evidence suggests that the striatum contributes enormously to reward learning but that its subregions may have distinct functions. A recent article by Tricomi and Lempert (J Neurophysiol. First published 22 October 2014, doi:10.1152/jn.00086.2014.) found that ventral striatum tracks reward value, whereas dorsol...
متن کاملReply: Differential functions of ventral and dorsal striatum.
Sir, In their letter concerning our recent report, Drs Zeighami and Moustafa discuss several previous studies investigating the functions of the ventral and dorsal striatum and the dissociation between action-value and stimulus-value learning. They note that in light of much of this previous work, our findings regarding Patient XG—who suffered bilateral lesions to dorsal striatum and is impaire...
متن کاملEncoding of action history in the rat ventral striatum.
In a dynamic environment, animals need to update information about the rewards expected from their alternative actions continually to make optimal choices for its survival. Because the reward resulting from a given action can be substantially delayed, the process of linking a reward to its causative action would be facilitated by memory signals related to the animal's previous actions. Although...
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ژورنال
عنوان ژورنال: Biological Psychiatry
سال: 2014
ISSN: 0006-3223
DOI: 10.1016/j.biopsych.2013.05.023