Geotropic Creeping of Young Rats

نویسنده

  • G. Pincus
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.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

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 کامل

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 کامل

Geotropic 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 کامل

Geotropic 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 کامل

On 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...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • The Journal of General Physiology

دوره 10  شماره 

صفحات  -

تاریخ انتشار 2003