Spatial phase sensitivity of complex cells in primary visual cortex depends on stimulus contrast

H Meffin; MA Hietanen; SL Cloherty; MR Ibbotson

Journal article

Spatial phase sensitivity of complex cells in primary visual cortex depends on stimulus contrast

H Meffin, MA Hietanen, SL Cloherty, MR Ibbotson

JOURNAL OF NEUROPHYSIOLOGY | AMER PHYSIOLOGICAL SOC | Published : 2015

DOI: 10.1152/jn.00431.2015

Abstract

Neurons in primary visual cortex are classified as simple, which are phase sensitive, or complex, which are significantly less phase sensitive. Previously, we have used drifting gratings to show that the phase sensitivity of complex cells increases at low contrast and after contrast adaptation while that of simple cells remains the same at all contrasts (Cloherty SL, Ibbotson MR. J Neurophysiol 113: 434-444, 2015; Crowder NA, van Kleef J, Dreher B, Ibbotson MR. J Neurophysiol 98: 1155-1166, 2007; van Kleef JP, Cloherty SL, Ibbotson MR. J Physiol 588: 3457-3470, 2010). However, drifting gratings confound the influence of spatial and temporal summation, so here we have stimulated complex cells..

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University of Melbourne Researchers

Hamish Meffin Author Biomedical Engineering

Michael Ibbotson Author Optometry and Vision Sciences

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Grants

Awarded by Australian Research Council Centre of Excellence in Vision Science

Awarded by Australian Research Council Centre of Excellence for Integrative Brain Function

Awarded by National Health and Medical Research Council

Funding Acknowledgements

This work was supported by the Australian Research Council Centre of Excellence in Vision Science (CE0561903), Australian Research Council Centre of Excellence for Integrative Brain Function (CE140100007), the National Health and Medical Research Council (GNT0525459), the Eirene Lucas Foundation, the Rebecca L. Cooper Medical Research Foundation, and the Victorian Lions Foundation.