An experiment was performed to display the absolute threshold for electrical stimulation of the skin as a function of S, the finger and the hand stimulated, and the day and time of day stimuli were administered. Thresholds were determined by a method of limits. S, the finger, and hand were significant sources of variation. A diurnal effect was suggested but not clearly shown. No quotidian effect was demonstrated.
AlluisiE. A.MorganB. B.HawkesG. R.Masking of cutaneous sensations in multiple stimulus presentations. Percept. mot. Skills, 1965, 20, 39–45.
3.
FoulkeE.Communication by electrical stimulation of the skin. Washington, D. C.: U. S. Army Medical Research and Development Command, 1963. (Annual Progress Report for the period of November 1, 1962 to October 31, 1963.) (Grant No. DA-MD-49-193-62-G49)
4.
FreemanG. L.HovlandC. I.Diurnal variations in performance and related physiological processes. Psychol. Bull., 1934, 31, 777–799.
5.
GeldardF. A.Adventures in tactile literacy. Amer. Psychologist, 1957, 12, 115–124.
6.
HawkesG. R.Cutaneous adaptation to alternating current. Unpublished master's thesis, Univer. of Virginia, 1956.
7.
HawkesG. R.Communication by electrical stimulation of the skin: 1. Absolute identification of stimulus intensity level. Washington, D. C.: U. S. Army Medical Research and Development Command, 1959. (USAMRL Project No. 6-95-20-001)
8.
HawkesG. R.Communication by electrical stimulation of the skin: V. Absolute identification of duration. Washington, D. C.: U. S. Army Medical Research and Development Command, 1960. (USAMRL Project No. 6-95-25-001)
9.
HowellW. C.Training on a vibratory communication system. Unpublished master's thesis, Univer. of Virginia, 1956.
10.
Illustrations of the nervous system, CIBA, 1962, 1, 55.
11.
JoresA.FreesJ.Die Tagesschwankungen der Schmerzempfindung. Deutsche Med. Wchnschr., 1937, 63, 962–963.
12.
KleitmanN.Sleep and wakefulness. Chicago: Univer. of Chicago Press, 1939.
13.
RansonS. W.ClarkS. L.The anatomy of the nervous system; its development and function. Philadelphia: Saunders, 1959.
