Reward-related suppression of neural activity in macaque visual area V4

Shapcott, Katharine A.; Schmiedt, Joscha T.; Kouroupaki, Kleopatra; Kienitz, Ricardo; Lazar, Andreea; Singer, Wolf; Schmid, Michael

doi:10.1093/cercor/bhaa079

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Reward-related suppression of neural activity in macaque visual area V4

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Shapcott, Katharine A.
Ernst Strüngmann Institute (ESI) for Neuroscience in Cooperation with Max Planck Society, Max Planck Society;
Singer Lab, Ernst Strüngmann Institute (ESI) for Neuroscience in Cooperation with Max Planck Society, Max Planck Society;

Schmiedt, Joscha T.
Ernst Strüngmann Institute (ESI) for Neuroscience in Cooperation with Max Planck Society, Max Planck Society;

Kouroupaki, Kleopatra
Ernst Strüngmann Institute (ESI) for Neuroscience in Cooperation with Max Planck Society, Max Planck Society;

Kienitz, Ricardo
Ernst Strüngmann Institute (ESI) for Neuroscience in Cooperation with Max Planck Society, Max Planck Society;

Lazar, Andreea
Ernst Strüngmann Institute (ESI) for Neuroscience in Cooperation with Max Planck Society, Max Planck Society;
Singer Lab, Ernst Strüngmann Institute (ESI) for Neuroscience in Cooperation with Max Planck Society, Max Planck Society;

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Singer, Wolf
Ernst Strüngmann Institute (ESI) for Neuroscience in Cooperation with Max Planck Society, Max Planck Society;
Singer Lab, Ernst Strüngmann Institute (ESI) for Neuroscience in Cooperation with Max Planck Society, Max Planck Society;

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https://academic.oup.com/cercor/article/30/9/4871/5827015
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Citation

Shapcott, K. A., Schmiedt, J. T., Kouroupaki, K., Kienitz, R., Lazar, A., Singer, W., et al. (2020). Reward-related suppression of neural activity in macaque visual area V4. Cerebral Cortex, 30(9), 4871-4881. doi:10.1093/cercor/bhaa079.

Cite as: https://hdl.handle.net/21.11116/0000-0006-5CA9-5

Abstract

In order for organisms to survive, they need to detect rewarding stimuli, for example, food or a mate, in a complex environment with many competing stimuli. These rewarding stimuli should be detected even if they are nonsalient or irrelevant to the current goal. The value-driven theory of attentional selection proposes that this detection takes place through reward-associated stimuli automatically engaging attentional mechanisms. But how this is achieved in the brain is not very well understood. Here, we investigate the effect of differential reward on the multiunit activity in visual area V4 of monkeys performing a perceptual judgment task. Surprisingly, instead of finding reward-related increases in neural responses to the perceptual target, we observed a large suppression at the onset of the reward indicating cues. Therefore, while previous research showed that reward increases neural activity, here we report a decrease. More suppression was caused by cues associated with higher reward than with lower reward, although neither cue was informative about the perceptually correct choice. This finding of reward-associated neural suppression further highlights normalization as a general cortical mechanism and is consistent with predictions of the value-driven attention theory.