FLICKER EVOKED INCREASE IN OPTIC-NERVE HEAD BLOOD-FLOW IN ANESTHETIZED CATS

[摘要] The effect of diffuse luminance flicker stimulation of a large area (almost-equal-to 30-degrees diameter) on red blood cell flux (F) in the optic nerve head was measured in the anesthetized cat. F increased markedly during sustained flicker. The F-response to the initiation and cessation of the stimulation was found to occur within a few seconds. Upon sustained stimulation, the increase in F reached a plateau within approximately 2 min. Its level depended upon the intensity, frequency and wavelength of the stimulation and the state of adaptation of the retina. This stimulus offers a new and powerful means of investigating blood flow regulation in the optic nerve head (ONH).

[发布日期] 1991-07-22

[关键词] BLOOD FLOW;LASER DOPPLER FLOWMETRY;OCULAR CIRCULATION;OPTIC NERVE;FLICKER;NEURONAL ACTIVITY;PO-2;DARK ADAPTATION