Critical flicker frequency as a function of stimulus area and luminance at various eccentricities in human cone vision: A revision of granit-harper and ferry-porter laws

• Published in: Vision research (Oxford) Vol. 28; no. 7; pp. 785 - 790
• Main Authors: Rovamo, Jyrki, Raninen, Antti
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 1988; Elsevier Science
• Subjects: Adult; Biological and medical sciences; Diffusion model; Eye and associated structures. Visual pathways and centers. Vision; Ferry-Porter law; Flicker Fusion - physiology; Fundamental and applied biological sciences. Psychology; Ganglion cells; Granit-Harper law; Humans; Light; Luminance; Models, Biological; Peripheral vision; Photopic vision; Photoreceptor Cells - physiology; Receptive field; Retina - physiology; Retinal Ganglion Cells - physiology; Spatial summation; Temporal summation; Vertebrates: nervous system and sense organs; Temporal summation; Ferry-Porter law; Luminance; Receptive field; Peripheral vision; Granit-Harper law; Photopic vision; Ganglion cells; Spatial summation; Diffusion model; Critical fusion frequency; Human; Eye; Vision
• ISSN: 0042-6989; 1878-5646
• DOI: 10.1016/0042-6989(88)90025-9

When the photopic luminous flux collected by ganglion cells was kept constant at all retinal locations by reducing average stimulus luminance in inverse proportion to photopic Ricco's area ( F-scaling), critical flicker frequency to stimuli of 1.2–88 deg 2 in area, presented at various eccentricities along the temporal meridian of the visual field, increased as a single logarithmic function of the number of retinal ganglion cells stimulated. Their number was calculated by multiplying stimulus area by the ganglion cell receptive field density of the human retina. When the number of ganglion cells stimulated was kept constant by enlarging the stimulus area in inverse proportion to the ganglion cell density ( M-scaling), the logarithm of CFF to green, yellow, orange and red cone-targets increased as parallel linear functions of logarithmic flux, calculated by multiplying retinal illuminance by photopic Ricco's area.