Memoirs of the National Academy of Sciences . 5S W .. CO CO -g i-w 3 . .S* CN 3 o W _3 3 i w ^ § s a «2 a w. I NATIONAT^ ACADEMY OF SCIENCES. VOL. VII. SECOND MEMOIR. OX EEACTIOX-TDIES AND THE VELOCITY OF THENERYOUS IMPULSE. 391 ON REACTIOX-TIMES AND THE VELOCITY OF THE NEIUOUS IMPULSE. By J. JU Keen Cattkix, Ph. D., and Chakles S. Dolley, M. 1). The object of this icseiucli is to detenniue the coiulitioiis which artect the length of thereaction-time on dermal stimuli, and to study the application of the reaction-time to the measure-ment of the velocity of the nervous impulse in motor and sens
Memoirs of the National Academy of Sciences . 5S W .. CO CO -g i-w 3 . .S* CN 3 o W _3 3 i w ^ § s a «2 a w. I NATIONAT^ ACADEMY OF SCIENCES. VOL. VII. SECOND MEMOIR. OX EEACTIOX-TDIES AND THE VELOCITY OF THENERYOUS IMPULSE. 391 ON REACTIOX-TIMES AND THE VELOCITY OF THE NEIUOUS IMPULSE. By J. JU Keen Cattkix, Ph. D., and Chakles S. Dolley, M. 1). The object of this icseiucli is to detenniue the coiulitioiis which artect the length of thereaction-time on dermal stimuli, and to study the application of the reaction-time to the measure-ment of the velocity of the nervous impulse in motor and sensory nerves and in motor and sensorytracts of the spinal cord. Since \()ii Hehiiholtz tirst measured the velocity of the nervous imi)ulse in 1850 much workhas been directed to the subject,*but the results are not accordant. The experiments on thenerve-muscle preparation of the frog are the most easily carried out, and these are usuallyregarded as valid for the motor and sensory nerves of man. It does not, however, follow thatthe effects of electrical stimulation on the excised and dying nerve of the frog
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Keywords: ., bookcentury1800, bookdecade1890, bookidmemoirsofnat, bookyear1895
