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Brain Res. 2014 Oct 31;1587:88-96. doi: 10.1016/j.brainres.2014.08.062. Epub 2014 Aug 27.

Value-driven attentional priority signals in human basal ganglia and visual cortex.

Author information

1
Johns Hopkins University, Baltimore, MD 21218, United States. Electronic address: bander33@jhu.edu.
2
Johns Hopkins University, Baltimore, MD 21218, United States.

Abstract

Goal-directed and stimulus-driven factors determine attentional priority through a well defined dorsal frontal-parietal and ventral temporal-parietal network of brain regions, respectively. Recent evidence demonstrates that reward-related stimuli also have high attentional priority, independent of their physical salience and goal-relevance. The neural mechanisms underlying such value-driven attentional control are unknown. Using human functional magnetic resonance imaging, we demonstrate that the tail of the caudate nucleus and extrastriate visual cortex respond preferentially to task-irrelevant but previously reward-associated objects, providing an attentional priority signal that is sensitive to reward history. The caudate tail has not been implicated in the control of goal-directed or stimulus-driven attention, but is well suited to mediate the value-driven control of attention. Our findings reveal the neural basis of value-based attentional priority.

KEYWORDS:

Attentional capture; Basal ganglia; Reward learning; Selective attention; fMRI

PMID:
25171805
PMCID:
PMC4253668
DOI:
10.1016/j.brainres.2014.08.062
[Indexed for MEDLINE]
Free PMC Article

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