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Biomedical subjects

F W Finger

Publications and source records attributed to F W Finger.

6 recordsLinked to original sources

John N. Buck (1906-1983): did he practically establish clinical psychology in Virginia?

A posthumous biographical profile is presented of John N. Buck, an early clinical psychologist who gained national recognition for his diverse contributions to the field. In addition to developing the House-Tree-Person (H-T-P) Projective Technique and an array of other psychological inventories, he was instrumental in establishing clinical psychology in Virginia. Buck served on the first Examining Board for Certification of Clinical Psychologists in Virginia (and the nation) and was later its chairman. He published his research in peer-reviewed journals and presented guest lectures at respected universities. These professional achievements were quite remarkable in light of the fact that Buck was paraplegic and had no college degree and only scattered formal training in psychology.

History, 20th Century↗

Relation of general activity in rats to environmental temperature.

The relation between ambient temperature and amount and pattern of wheel running was examined in four experiments, with a total of 88 adult male albino rats of the Sprague-Dawley strain, under conditions of 12-hr. light/12-hr. dark. While lowering of temperature from baseline of 21--25 degrees C to 4--7 degrees C most typically led to increased running, consistently reduced running characterized a substantial number of individuals, especially those with relatively high baseline scores. When comparison trials were run at 27 degrees C, reduced activity was recorded for virtually all subjects. As temperature was elevated above 27 degrees C, however, there was in most cases an upturn. At 34 degrees C, 24-hr. running scores tended to exceed baseline level for about half the animals, and running during the light 12 hr. of the day was above baseline for virtually all. Analysis of the temporal distribution suggests that the thermoregulatory reduction of activity, readily demonstrated at the moderately warm temperature, is complicated by efforts to escape as the environment becomes aversively hot. Failure of previous investigators to observe this is attributable in part to apparatus and recording differences. It is speculated that the pattern of response to extreme temperatures is closely related to the circadian fluctuation of internal temperature.

Animals↗

Basic drives.

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Age Factors↗

Activity rhythms and adiurnal light-dark control.

The running-wheel activity pattern of mature male rats was successfully synchronized to light-dark cycles as long as 48 hours and as short as 16 hours. Even after 6 months' exposure to "days" longer than the normal 24 hours, the animals returned promptly to circadian rhythmicity when placed under freerunning conditions of continuous dark. That such rhythms also reappeared when the light condition of the 36-hour cycle was reduced from 660 to 33 lumens per square meter suggests that brightness may be the critical factor in the unexpectedly broad range of entrainment demonstrated.

Animals↗