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A Balanced Comparison of Object Invariances in Monkey IT Neurons

Ratan Murty, N Apurva and Arun, Sripati P (2017) A Balanced Comparison of Object Invariances in Monkey IT Neurons. In: eneuro, 4 (2). ENEURO.0333-16.2017. ISSN 2373-2822

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Official URL: https://doi.org/10.1523/ENEURO.0333-16.2017


Our ability to recognize objects across variations in size, position, or rotation is based on invariant object representations in higher visual cortex. However, we know little about how these invariances are related. Are some invariances harder than others? Do some invariances arise faster than others? These comparisons can be made only upon equating image changes across transformations. Here, we targeted invariant neural representations in the monkey inferotemporal (IT) cortex using object images with balanced changes in size, position, and rotation. Across the recorded population, IT neurons generalized across size and position both stronger and faster than to rotations in the image plane as well as in depth. We obtained a similar ordering of invariances in deep neural networks but not in low-level visual representations. Thus, invariant neural representations dynamically evolve in a temporal order reflective of their underlying computational complexity.

Item Type: Journal Article
Publication: eneuro
Publisher: Society for Neuroscience
Additional Information: The Copyright of this article belongs to the Authors.
Keywords: Inferotemporal; Invariance; Object recognition; Pattern recognition; Action Potentials; Animals; Computer Simulation; Fixation, Ocular; Functional Laterality; Macaca radiata; Male; Neural Networks (Computer); Neurons; Nonlinear Dynamics; Pattern Recognition, Visual; Photic Stimulation; Rotation; Size Perception; Visual Cortex; animal model; Article; behavior assessment; cluster analysis; image analysis; inferior temporal cortex; nerve cell network; nonhuman; pattern recognition; priority journal; reliability; visual evoked potential; action potential; animal; artificial neural network; computer simulation; cytology; eye fixation; hemispheric dominance; Macaca radiata; male; nerve cell; nonlinear system; perception; photostimulation; physiology; rotation; visual cortex
Department/Centre: Division of Biological Sciences > Centre for Neuroscience
Date Deposited: 16 Jun 2022 09:57
Last Modified: 16 Jun 2022 09:57
URI: https://eprints.iisc.ac.in/id/eprint/73553

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