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Neurons in macaque area V4 acquire directional tuning after adaptation to motion stimuli

Abstract

Neurons in area V4 of the macaque are generally not selective for direction of motion, as judged from their response to directional stimuli presented after a baseline condition devoid of movement. We used motion adaptation to investigate whether stimulation history influences direction-of-motion selectivity. We found that classically nondirectional V4 neurons develop direction-of-motion selectivity after adaptation, an observation that underscores the dynamic nature of functional cortical architecture.

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Figure 1: Classical versus adaptation stimulation condition.
Figure 2: Population analysis.
Figure 3: Relationship between direction of motion of adapting stimulus and post-adaptation tuning functions.

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Acknowledgements

This study was supported by the Max Planck Society, a National Research Service Award from the National Eye Institute (NEI) of the US National Institutes of Health to A.S.T. and a KO8 award from the NEI to S.M.S. We thank S.-P. Ku, G. Rainer, T. Siapas and N. Sigala for helpful discussions and J. Werner for computer support.

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Correspondence to Andreas S Tolias.

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Tolias, A., Keliris, G., Smirnakis, S. et al. Neurons in macaque area V4 acquire directional tuning after adaptation to motion stimuli. Nat Neurosci 8, 591–593 (2005). https://doi.org/10.1038/nn1446

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