Geotropic Creeping of Young Rats
نویسنده
چکیده
The rate of upward creeping in negatively geotropic rats aged 13 to 14 days is a function of the gravitational stimulus. The rate of upward movement on the creeping plane, like the angle of orientation, is directly proportional to the logarithm of the gravity component. The variability in the speed of creeping decreases in proportion to the logarithm of the gravitational effect. When weights are attached to the animals' tails the rate of upward creeping varies almost directly as the logarithm of the attached weight, and the speed of creeping is still proportional to the angle of upward orientation.
منابع مشابه
Geotropic Creeping of Young
The geotropic conduct of young rats has been discussed in a previous paper (Crozier and Pincus, 1926-27) with special reference to the angle of orientation upon an inclined plane. It was found that the angle of orientation (0) is directly proportional to the logarithm of the gravitational component (g sin ~) in the creeping plane. This is explicable as the result of the distribution of the pull...
متن کاملGeotropic Creeping of Young
The geotropic conduct of young rats has been discussed in a previous paper (Crozier and Pincus, 1926-27) with special reference to the angle of orientation upon an inclined plane. It was found that the angle of orientation (0) is directly proportional to the logarithm of the gravitational component (g sin ~) in the creeping plane. This is explicable as the result of the distribution of the pull...
متن کاملGeotropic Orientation of Young Rats. by W. J. Crozier A~d G. Pincus
In describing the geotropic conduct of young rats (RaUus norvegicus) t we have stressed the fact that to obtain data suitable for quantitative treatment of the gravitational orientation it is necessary to employ individuals of the closest possible similarity. This has meant, in practice, employing litter mates from lines long inbred, under external conditions as nearly uniform as possible. The ...
متن کاملGeotropic Orientation of Young Rats. By
In describing the geotropic conduct of young rats (RaUus norvegicus) t we have stressed the fact that to obtain data suitable for quantitative treatment of the gravitational orientation it is necessary to employ individuals of the closest possible similarity. This has meant, in practice, employing litter mates from lines long inbred, under external conditions as nearly uniform as possible. The ...
متن کاملOn the Equilibration of Geotropic and Phototropic Excitations in the Rat
The intensity of light required to just counterbalance geotropic orientation of young rats, with eyelids unopened, is so related to the angle of inclination (alpha) of the creeping plane that the ratio log I/log sin alpha is constant. This relationship, and the statistical variability of I as measured at each value of alpha, may be deduced from the known phototropic and the geotropic conduct as...
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ورودعنوان ژورنال:
- The Journal of General Physiology
دوره 10 شماره
صفحات -
تاریخ انتشار 2003