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The authors have devised an apparatus for monitoring the spontaneous locomotor activity of rats, with which the patterns of locomotor activity under the condition of light-dark cycle (light period: twelve hours from 6 a.m., dark period: the other half of the day) were analysed. In addition, changes in locomotor activities due to forced exercise (swimming) were recorded. The results obtained were as follows: 1. The patterns of locomotor activities in rats recorded by the monitor showed the same patterns as reported already by other researchers. The authors believe that this new apparatus can be used practically as a locomotor activity monitor. 2. Due to exhaustive exercise by swimming, changes of the ultradian rhythm in rats were observed. 3. By loading of swimming, locomotor activities in rats decreased significantly, especially in the dark period. These results suggest that this newly devised apparatus is useful as a locomotor activity monitor, and that the fatigue in rats caused by physical load can be shown as the change in locomotor activities.
H Homma, and
C Kishihara, and
N Motoya, and
H Watanabe, and
H Ochi, and
M Sugawara, and
T Muramatsu, and
E Takakuwa
August 1977,
Acta chirurgiae orthopaedicae et traumatologiae Cechoslovaca,
H Homma, and
C Kishihara, and
N Motoya, and
H Watanabe, and
H Ochi, and
M Sugawara, and
T Muramatsu, and
E Takakuwa
November 1980,
[Hokkaido igaku zasshi] The Hokkaido journal of medical science,
H Homma, and
C Kishihara, and
N Motoya, and
H Watanabe, and
H Ochi, and
M Sugawara, and
T Muramatsu, and
E Takakuwa
October 1991,
Experientia,
H Homma, and
C Kishihara, and
N Motoya, and
H Watanabe, and
H Ochi, and
M Sugawara, and
T Muramatsu, and
E Takakuwa
October 1981,
Jikken dobutsu. Experimental animals,
H Homma, and
C Kishihara, and
N Motoya, and
H Watanabe, and
H Ochi, and
M Sugawara, and
T Muramatsu, and
E Takakuwa
October 1973,
Rinsho byori. The Japanese journal of clinical pathology,
H Homma, and
C Kishihara, and
N Motoya, and
H Watanabe, and
H Ochi, and
M Sugawara, and
T Muramatsu, and
E Takakuwa
November 1981,
Kokyu to junkan. Respiration & circulation,
H Homma, and
C Kishihara, and
N Motoya, and
H Watanabe, and
H Ochi, and
M Sugawara, and
T Muramatsu, and
E Takakuwa
May 1979,
The Japanese journal of antibiotics,
H Homma, and
C Kishihara, and
N Motoya, and
H Watanabe, and
H Ochi, and
M Sugawara, and
T Muramatsu, and
E Takakuwa
January 1973,
Nihon Koku Geka Gakkai zasshi,
H Homma, and
C Kishihara, and
N Motoya, and
H Watanabe, and
H Ochi, and
M Sugawara, and
T Muramatsu, and
E Takakuwa
October 1969,
Research quarterly,
H Homma, and
C Kishihara, and
N Motoya, and
H Watanabe, and
H Ochi, and
M Sugawara, and
T Muramatsu, and
E Takakuwa
January 1975,
Experimentelle Pathologie,
