| Literature DB >> 913522 |
M H Foerster, W A van de Grind, O J Grüsser.
Abstract
Intracellular responses of horizontal cells in the retina were recorded from the intact eye in situ of anesthetized and paralyzed cats. The responses to large (15 X 15 degrees) high modulation (0.6-0.9) photopic (140-200 cd/m2) sinewave light stimuli could be grouped unequivocally into three distinct classes on the basis of the critical flicker frequency (CFF); Hn-units had a CEF of 25-40 Hz, hm-units of 55-70 Hz and Hw-units of 95-110 Hz. For some stimulus situations small oscillations could be seen in Hm-responses (resonance frequency of about 43 Hz) and Hw-responses (resonance frequency 95 Hz). Hn-responses never showed such an oscillatory tendency. Frequency transfer functions are presented for the three types of H-units and a phenomenological model is discussed that describes these results quantitatively.Entities:
Mesh:
Year: 1977 PMID: 913522 DOI: 10.1007/bf00236175
Source DB: PubMed Journal: Exp Brain Res ISSN: 0014-4819 Impact factor: 1.972