Abstract:
:Field spectral sensitivities of the pattern-elicited electroretinogram (PERG) were obtained from two subjects using a modified version of Stiles' two-color increment threshold procedure. A 540 nm checkerboard test pattern of 38 degrees dia was alternated at 8 Hz on a uniform adapting field of the same size. Test intensity, field wavelength and field intensity were varied parametrically. The derived field spectral sensitivity does not resemble that of any individual class of cones; it roughly approximates the photopic luminosity function V lambda, but with sensitivity dips at 540 and 600 nm, which may be associated with an adaptation of the red/green (R/G) opponent site. Thus, it is proposed that the PERG reflect activities in both the luminance and the R/G opponent channels.
journal_name
Vision Resjournal_title
Vision researchauthors
Wu Sdoi
10.1016/0042-6989(92)90064-psubject
Has Abstractpub_date
1992-11-01 00:00:00pages
2031-41issue
11eissn
0042-6989issn
1878-5646pii
0042-6989(92)90064-Pjournal_volume
32pub_type
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