Reward modulates the neural dynamics of early visual category processing.
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Reward modulates the neural dynamics of early visual category processing. / Apitz, Thore; Bunzeck, Nico.
In: NEUROIMAGE, Vol. 63, No. 3, 3, 2012, p. 1614-1622.Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review
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TY - JOUR
T1 - Reward modulates the neural dynamics of early visual category processing.
AU - Apitz, Thore
AU - Bunzeck, Nico
PY - 2012
Y1 - 2012
N2 - Converging evidence suggests that visual brain regions are part of a widespread network that signals forthcoming reward. However, the precise temporal dynamics underlying the interaction between reward and visual information processing remain unclear. To further investigate this issue, we used magnetoencephalography (MEG) in combination with two versions of a face/scene discrimination task followed by a recognition memory test. In experiment 1, the distinction between faces and scenes was associated with monetary reward prospect, whereas in experiment 2 subjects distinguished between both categories in the absence of reward. In both experiments characteristic neural category effects (i.e., differences between faces and scenes) were observed in the event-related magnetic fields (ERF) at ~100 ms (M100) and ~170 ms (M170) after stimulus onset. Importantly, both ERF components (M100 and M170) were amplified in the context of reward (i.e., experiment 1) and this interaction could be source localized to the lateral occipital cortex (~100 ms) and fusiform gyrus (~170 ms). Furthermore, neural effects of reward prediction emerged over frontal sensors at ~300 ms after stimulus onset which reliably correlated with subsequent recognition memory performance. These results demonstrate that reward motivation can modulate early neural computations of complex visual information, possibly by tuning sensory neurons within the visual cortex.
AB - Converging evidence suggests that visual brain regions are part of a widespread network that signals forthcoming reward. However, the precise temporal dynamics underlying the interaction between reward and visual information processing remain unclear. To further investigate this issue, we used magnetoencephalography (MEG) in combination with two versions of a face/scene discrimination task followed by a recognition memory test. In experiment 1, the distinction between faces and scenes was associated with monetary reward prospect, whereas in experiment 2 subjects distinguished between both categories in the absence of reward. In both experiments characteristic neural category effects (i.e., differences between faces and scenes) were observed in the event-related magnetic fields (ERF) at ~100 ms (M100) and ~170 ms (M170) after stimulus onset. Importantly, both ERF components (M100 and M170) were amplified in the context of reward (i.e., experiment 1) and this interaction could be source localized to the lateral occipital cortex (~100 ms) and fusiform gyrus (~170 ms). Furthermore, neural effects of reward prediction emerged over frontal sensors at ~300 ms after stimulus onset which reliably correlated with subsequent recognition memory performance. These results demonstrate that reward motivation can modulate early neural computations of complex visual information, possibly by tuning sensory neurons within the visual cortex.
KW - Adult
KW - Humans
KW - Male
KW - Female
KW - Young Adult
KW - Brain Mapping
KW - Visual Perception/physiology
KW - Memory/physiology
KW - Magnetoencephalography
KW - Reward
KW - Reaction Time/physiology
KW - Recognition (Psychology)/physiology
KW - Visual Cortex/physiology
KW - Adult
KW - Humans
KW - Male
KW - Female
KW - Young Adult
KW - Brain Mapping
KW - Visual Perception/physiology
KW - Memory/physiology
KW - Magnetoencephalography
KW - Reward
KW - Reaction Time/physiology
KW - Recognition (Psychology)/physiology
KW - Visual Cortex/physiology
M3 - SCORING: Journal article
VL - 63
SP - 1614
EP - 1622
JO - NEUROIMAGE
JF - NEUROIMAGE
SN - 1053-8119
IS - 3
M1 - 3
ER -