The role of ventral striatum in reward-based attentional bias
| Autor: | Michelle VanTieghem, R. James R. Blair, Harma Meffert, Isaiah Sypher, Joseph Leshin, Elizabeth Penner |
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| Rok vydání: | 2018 |
| Předmět: |
Adult
Male media_common.quotation_subject Attentional bias Stimulus (physiology) 050105 experimental psychology Attentional Bias 03 medical and health sciences 0302 clinical medicine Reward Perception Neural Pathways Repetition Priming Reaction Time Biological neural network medicine Humans 0501 psychology and cognitive sciences Molecular Biology Visual Cortex media_common Brain Mapping General Neuroscience 05 social sciences Ventral striatum Anticipation Psychological Magnetic Resonance Imaging Visual cortex medicine.anatomical_structure Ventral Striatum Visual Perception Female Neurology (clinical) Psychology Neuroscience psychological phenomena and processes 030217 neurology & neurosurgery Developmental Biology |
| Zdroj: | Brain Research. 1689:89-97 |
| ISSN: | 0006-8993 |
| Popis: | Introduction Models of attention suggest that endogenous and exogenous factors can bias attention. However, recent data suggest that reward can also enhance attention towards relevant stimulus features as a function of involuntary biases. In this study, we utilized the additional singleton task to determine the neural circuitry that biases perceptual processing as a function of reward history. Methods Participants searched for a unique shape amongst an array of differently shaped objects. All shapes, including the target shape, had the same color except one distractor shape. Participants randomly received a low or high reward after correct trials. From one trial to the next, target colors could stay the same or swap with the distractor color. Interestingly, and despite the irrelevancy of reward magnitude for task accuracy, the difference in reaction time between swap and non-swap trials usually is more pronounced following a high compared to a low reward. Results In the current study, we showed that reward modulated attention is larger for individuals with enhanced reward magnitude sensitivity in the ventral striatum. In addition, connectivity data shows that ventral striatum was more positively connected with visual cortex during high reward non-swap trials compared to high reward swap trials for participants showing stronger reward modulated attention. Conclusions This suggests that involuntary reward modulated attention might be implemented by direct influences of the ventral striatum on visual cortex. |
| Databáze: | OpenAIRE |
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