SUBCORTICAL THRESHOLD VOLTAGES AS A FUNCTION OF SINE WAVE FREQUENCIES

Abstract
Voltage thresholds at low (20-1000 cps) and high (1000-100,000 cps) frequencies were explored for various cerebral areas in the cat. Relatively constant threshold values extended from frequencies of about 200 to 3000 cps. Response latency, reversal of response, and quality of response are affected by parameters of stimulation. Hence, threshold response for any cerebral area must be expressed in terms of parameters used.