The effects of strobe rate of head-fixed visual targets on suppression of vestibular nystagmus
- 23 Downloads
- 2 Citations
Summary
The effects of degrading retinal image velocity information on suppression of the vestibulo-ocular reflex have been assessed through tachistoscopic presentation of target sources in man. Subjects were required to fixate a head-fixed display during exposure to a 0.5 Hz sinusoidal angular oscillation of the head at ±60 °/s. In the first experiment it was found that the degree of suppression was progressively degraded as the interval between successive target presentations was increased from 10 to 3,000 ms. In the second experiment no effect of changing the duration of the target pulse was observed over a range from 20 to 1,000 μs. The results appear consistent with a model of visual motion sensitivity in which relative velocity information is obtained by the temporal integration of responses from spatially separated retinal cells.
Key words
Vestibulo-ocular reflex Visual suppression Tachistoscopic presentation Head-fixed display Fovea Peripheral retinaPreview
Unable to display preview. Download preview PDF.
References
- Amblard B, Courjon JH, Cremieux J, Flandrin JM, Kennedy H (1981) The influence of stroboscopic rearing on the optokinetic nystagmus in the cat. J Physiol (Lond) 317: 74–75pGoogle Scholar
- Barnes GR (1980) Vestibular control of oculomotor and postural mechanisms. Clin Phys Physiol Meas 1: 3–40Google Scholar
- Barnes GR (1982a) A procedure for the analysis of nystagmus and other eye movements. Aviat Space Environ Med 53: 676–682Google Scholar
- Barnes GR (1982b) The effects of retinal location and strobe rate of head-fixed visual targets on suppression of vestibular nystagmus. In: Roucoux A (ed) Physiological and pathological aspects of eye movements. Dr. W. Junk Publ., The Hague, pp 281–300Google Scholar
- Barnes GR, Benson AJ, Prior ARJ (1978) Visual-vestibular interaction in the control of eye movement. Aviat Space Environ Med 49: 557–564Google Scholar
- Barnes GR, Smith R (1981) The effects on visual discrimination of image movement across the stationary retina. Aviat Space Environ Med 52: 466–472Google Scholar
- Benson AJ, Barnes GR (1978) Vision during angular oscillation: the dynamic interaction of visual and vestibular mechanisms. Aviat Space Environ Med 49: 340–345Google Scholar
- Gonshor A, Melvill Jones G (1976) Extreme vestibulo-ocular adaptation induced by prolonged optical reversal of vision. J Physiol (Lond) 256: 381–414Google Scholar
- Grüsser OJ, Grüsser-Cornehls U (1973) Neuronal mechanisms of visual movement perception and some psychophysical and behavioural correlations. In: Jung R (ed) Central visual information (A). Handbook of sensory physiology, vol VII/3. Springer, Heidelberg New York, pp 333–429Google Scholar
- Haber RN, Standing LG (1970) Direct estimates of apparent duration of flash followed by visual noise. Can J Psychol 24: 216–229Google Scholar
- Kelly DH (1971) Theory of flicker and transient responses. I. Uniform fields. J Opt Soc Am 61: 537–546Google Scholar
- Mandl G (1974) The influence of visual pattern combinations on responses of movement sensitive cells in the cat's superior colliculus. Brain Res 75: 215–240Google Scholar
- Melvill Jones G, Mandl G (1979) Effects of strobe light on adaptation of vestibulo-ocular reflex (VOR) to vision reversal. Brain Res 164: 300–303Google Scholar