Abstract
Hippocampal conceptual representations and their reward value
Highlights
Kumaran et al (2009) provided compelling evidence that the hippocampus acquires and retains knowledge about conceptual relations among visual patterns during a task where participants learn associations between a set of patterns and a set of choices through reinforcement learning
Kumaran et al (2009) found that the hippocampal blood oxygenation level-dependent (BOLD) signal correlated with the probe_performance vector during the “Initial” session of the task, where conceptual relations among a set of patterns were acquired for the first time, and that the hippocampal BOLD signal observed during the “Initial” session correlated with performance during the “New” session of the task, where the same conceptual relations were present among a new set of patterns
Correlates of the probe_performance vector in hippocampal BOLD signal may represent the acquisition and representation of conceptual knowledge, the question of whether a correlate of the reward value of this knowledge is represented in hippocampal activity remains unanswered
Summary
Kumaran et al (2009) provided compelling evidence that the hippocampus acquires and retains knowledge about conceptual relations among visual patterns during a task where participants learn associations between a set of patterns and a set of choices through reinforcement learning. They showed that, during learning, hippocampal blood oxygenation level-dependent (BOLD) signal correlates with participants’ knowledge of conceptual relations among the patterns.
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