ERG responses and the Ferry-Porter law

Kremers J, Aher A, Huchzermeyer C (2025)

Publication Type: Journal article

Publication year: 2025

Journal

Journal of the Optical Society of America A: Optics and Image Science, and Vision

Book Volume: 42

Pages Range: B1-B7

Journal Issue: 5

DOI: 10.1364/JOSAA.538103

Abstract

The Ferry-Porter law states that the psychophysically measured critical flicker fusion frequency (CFF) is linearly correlated with the logarithm of the mean luminance. We studied the relationship between the CFFs of L- and M-cone driven ERGs (five normal trichromats; sinusoidal modulation; 18% cone contrast) and mean luminance. The measurements were performed at seven mean luminances between 2.84 and 284 cd/m². Close to the CFF, the ERG amplitudes versus temporal frequency could be described by a simple exponential function. The CFFs were higher for L- than for M-cone driven ERGs and depended linearly on the logarithm of the mean luminance (i.e., adhered to the Ferry-Porter law) with steeper slopes compared to psychophysical measurements.

Authors with CRIS profile

Jan Kremers Professur für Experimentelle Augenheilkunde Avinash Aher Professur für Experimentelle Augenheilkunde Cord Huchzermeyer Department of Ophthalmology

How to cite

APA:

Kremers, J., Aher, A., & Huchzermeyer, C. (2025). ERG responses and the Ferry-Porter law. Journal of the Optical Society of America A: Optics and Image Science, and Vision, 42(5), B1-B7. https://doi.org/10.1364/JOSAA.538103

MLA:

Kremers, Jan, Avinash Aher, and Cord Huchzermeyer. "ERG responses and the Ferry-Porter law." Journal of the Optical Society of America A: Optics and Image Science, and Vision 42.5 (2025): B1-B7.

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