Cited by 39Neural and Behavioral Psychology StudiesNeural dynamics and brain functionNeurotransmitter Receptor Influence on Behavior

Contrasting effects of reward expectation on sensory and motor memories in primate prefrontal neurons

Amemori, Ken-ichi, Sawaguchi, Toshiyuki·2006·Cerebral Cortex

Abstract

The value of reward obtained with successful behavior is important for guiding purposeful behavior. The lateral prefrontal cortex (LPFC) has been implicated in working memory that guides goal-directed behavior. However, mechanism that integrates the reward value into the working memory for goal-directed behavior is not understood. To help clarify this issue, we examined the effect of reward expectation on the neuronal process in the LPFC associated with memory-based sensorimotor processing. By temporally dissociating visuospatial sensory and saccade-directional motor memories in the LPFC, we here show that reward expectation significantly enhanced the directional selectivity of sensory working memory but did not affect the directional selectivity of motor memory. The enhancement of sensory working memory in the neuronal population was sustained during the delay but extinguished soon after the motor memory appeared. These results suggest that the expectation of high reward value primarily affects the sensory working memory that may be used for behavioral guidance rather than preparation for forthcoming saccades. It thus appears that the LPFC is a neuronal substrate for working memory used to guide a reward-oriented behavior, rather than reflecting an efficient control of motor action in motivated states.

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  • Lateral and ventromedial prefrontal cortices show reduced activation with extended training.

    “For example, lateral and ventromedial prefrontal cortices, which both encode the value of expected outcomes [67–68, 37] do show reduced activation with extended training [69–70].”

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Authors
Amemori, K.-I., & Sawaguchi, T.
Affiliations
Hokkaido University (JP)
Corresponding author
Amemori, Ken-ichi
Venue
Cerebral Cortex
Published
2005-10-12
Volume
16
Issue
7
Pages
1002-1015
ISSN
  • 1047-3211 (ISSN-L)
  • 1460-2199
OpenAlex
W2152080080
Cited by
39
References
47
Citations by year
2024: 1 · 2023: 2 · 2022: 1 · 2017: 2 · 2016: 1 · 2015: 3 · 2014: 2 · 2012: 3
FWCI
2.14
Type
journal article
Language
en
Open access
closed
Locations
  • Cerebral Cortex (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural and Behavioral Psychology Studies
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
Keywords
reward anticipation, lateral prefrontal cortex, working memory, motor memory, saccade direction, direction selectivity, goal-directed behavior, visuospatial memory
MeSH terms
Animals, Cues, Evoked Potentials, Visual, Eye Movements, Female, Fixation, Ocular, Macaca, Male, Memory, Short-Term, Motion Perception, Motivation, Neurons, Reward, Space Perception, Task Performance and Analysis, Prefrontal Cortex

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