The cumulative effects of different stimulus repitition rates on the auditory evoked response in man

摘要: Abstract Experiments were designed so that a test stimulus was presented each 5.5 sec and fixed silent interval (approx. 1 in duration) preceded its onset. Stimuli delivered at various repetition rates interposed between successive stimuli. Their effects on the N P 2 amplitudes latencies recorded for investigated. Because of interval, influence extremely rapid intervening stimulation could be studied since there always some degree recovery. Both tone-bursts noise-bursts employed. The results showed component auditory evoked response reduced amplitude as presentation rate stimuli increased from 1/4 to 10/sec. Further increases repitition reversed this trend. Indeed, sounds 25/sec appeared treated by neural mechanism underlying if they formed continuous sound. Response associated with both conditions nearly identical. when slowly periodically compared those no intervened This interpreted mean “alerted” nervous system impending arrival stimulus.