Neuronal Activity Related to Reward Size and Rewarded Target Position in Primate Supplementary Eye Field

Several areas of the macaque brain are known to be related to the reward during the performance of saccadic eye-movement tasks. Neurons in the supplementary eye field (SEF) have been reported to be involved in the prediction and detection of a reward. We describe a group of neurons in the SEF that b...

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Bibliographic Details
Published in:The Journal of neuroscience 2007-12, Vol.27 (50), p.13750-13755
Main Authors: Uchida, Yusuke, Lu, Xiaofeng, Ohmae, Shogo, Takahashi, Toshimitsu, Kitazawa, Shigeru
Format: Article
Language:English
Subjects:
Animals
Brief Communications
Electrodes, Implanted
Electrophysiology
Fixation, Ocular - physiology
Frontal Lobe - physiology
Macaca
Neurons - physiology
Primates
Reward
Saccades - physiology
Time Factors
Visual Perception - physiology
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Summary:Several areas of the macaque brain are known to be related to the reward during the performance of saccadic eye-movement tasks. Neurons in the supplementary eye field (SEF) have been reported to be involved in the prediction and detection of a reward. We describe a group of neurons in the SEF that became active during the period of reward delivery after saccades toward a specific direction, but showed weaker activity in other directions, although the same amount of reward was given in each direction. Moreover, this directional reward activity was modulated by the reward size. Our results demonstrate that the SEF cells may reflect both reward amount and target positions toward which a movement was rewarded, and suggest that they may play an important role in providing information about the value of each saccade according to the spatial target location.
ISSN:0270-6474
1529-2401
DOI:10.1523/JNEUROSCI.2693-07.2007