Developmentally stable representations of naturalistic image structure in macaque visual cortex

To determine whether post-natal improvements in form vision result from changes in mid-level visual cortex, we studied neuronal and behavioral responses to texture stimuli that were matched in local spectral content but varied in “naturalistic” structure. We made longitudinal measurements of visual...

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Bibliographic Details
Published in:	Cell reports (Cambridge) Vol. 43; no. 8; p. 114534
Main Authors:	Lee, Gerick M., Rodríguez Deliz, C.L., Bushnell, Brittany N., Majaj, Najib J., Movshon, J. Anthony, Kiorpes, Lynne
Format:	Journal Article
Language:	English
Published:	United States Elsevier Inc 27-08-2024 Elsevier
Subjects:	CP: Neuroscience development form vision macaque naturalistic images neurophysiology psychophysics texture visual cortex naturalistic images macaque development visual cortex form vision CP: Neuroscience texture neurophysiology psychophysics
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Summary:	To determine whether post-natal improvements in form vision result from changes in mid-level visual cortex, we studied neuronal and behavioral responses to texture stimuli that were matched in local spectral content but varied in “naturalistic” structure. We made longitudinal measurements of visual behavior from 16 to 95 weeks of age, and of neural responses from 20 to 56 weeks. We also measured behavioral and neural responses in near-adult animals more than 3 years old. Behavioral sensitivity reached half-maximum around 25 weeks of age, but neural sensitivities remained stable through all ages tested. Neural sensitivity to naturalistic structure was highest in V4, lower in V2 and inferotemporal cortex (IT), and barely discernible in V1. Our results show a dissociation between stable neural performance and improving behavioral performance, which may reflect improved processing capacity in circuits downstream of visual cortex. [Display omitted] •Behavioral sensitivity to naturalistic texture roughly doubles from 25 weeks to maturity•Neural sensitivity in V1, V2, V4, and IT is stable over this age range•Texture sensitivity is highest in V4, lowest in V1, and intermediate in V2 and IT Lee et al. use naturalistic texture images to test the visual sensitivity of macaque monkeys during development. In interleaved sessions, they record population neural responses using the same stimuli in V1, V2, V4, and IT. Behavioral sensitivity increases with age, but neural sensitivity is adult-like at all ages.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 AUTHOR CONTRIBUTIONS L.K., J.A.M., and N.J.M. designed the experiments. G.M.L., C.L.R.D., and B.N.B. conducted the experiments. G.M.L. and N.J.M. wrote the software, analyzed the data, and did the modeling. G.M.L. drafted the paper. J.A.M. and L.K. finalized the manuscript.
ISSN:	2211-1247 2211-1247
DOI:	10.1016/j.celrep.2024.114534