[Motor responses of rabbits to repeated photic stimulation].
In response to a repeated photic stimulation of moderate intensity EMG-responses appeared in neck, ear, fore- and hind-limbs muscles of a rabbit, with no tendency to extinction. Animal's position had a considerable effect on the probability of occurence of EMG-responses. The probability was similar for all muscles, making 30% when the rabbit was fixed in a lying position (posture I) and about 15% when the animal was in a natural sitting position (posture II). The response latencies, recorded in limb muscles, varied considerably, the distribution maximum occurring at 0.4--0.6 sec. In rabbits in posture I the fore-leg was involved into reaction more rapidly than the hind-leg. In rabbits in posture II no such difference was observed. It is assumed that EMG-responses to indifferent stimuli reflect rearrangements occuring primarily in the postural system and contributing to animal's activity readiness.
D000161:Acoustic Stimulation; D000818:Animals; D004576:Electromyography; D005152:Facial Muscles / Q000502:physiology; D005552:Forelimb; D006614:Hindlimb; D009043:Motor Activity / Q000502:physiology*; D009132:Muscles / Q000502:physiology*; D009334:Neck Muscles / Q000502:physiology; D010775:Photic Stimulation; D011187:Posture; D011817:Rabbits; D011930:Reaction Time / Q000502:physiology
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