Age and light deprivation in relation to reinforcing effects of light onset.

1965 ◽  
Vol 60 (3) ◽  
pp. 432-435
Author(s):  
Delmont Morrison
Keyword(s):  
Light Deprivation ◽  
Light Onset ◽  
Reinforcing Effects

Effects of hunger and thirst on reinforcing properties of light onset and light offset.

1968 ◽  
Vol 66 (3, Pt.1) ◽  
pp. 784-787 ◽  
Author(s):  
Jack T. Tapp ◽  
Donna M. Mathewson ◽  
Lance L. Simpson
Keyword(s):  
Light Onset

PHYSIOLOGICAL EFFECTS OF THE PINEAL GLAND IN ANDROGEN-STERILIZED FEMALE RATS

1970 ◽  
Vol 63 (4) ◽  
pp. 667-678 ◽  
Author(s):  
Russel J. Reiter
Keyword(s):  
Pineal Gland ◽  
Reproductive Organs ◽  
Female Rats ◽  
Inhibitory Influence ◽  
Light Deprivation ◽  
Vaginal Smears ◽  
Adult Rats ◽  
Androgen Treatment ◽  
Postnatal Treatment ◽  
Cervical Ganglia

ABSTRACT The influence of early androgen treatment, light deprivation (by blinding), pinealectomy and superior cervical ganglionectomy on the reproductive system of female rats was tested. Early postnatal treatment of rats with testosterone propionate caused adult rats to exhibit the characteristic signs of androgen sterilization; these included polyfollicular ovaries, normal-sized uteri and persistent vaginal cornification. If early androgentreated rats also were blinded the ovaries were smaller in size and contained fewer follicles, the uteri were greatly reduced in size and the incidence of vaginal oestrus was decreased by approximately 50% If in addition to blinding, androgen-sterilized animals were subjected to either removal of the pineal gland or superior cervical ganglia, the reproductive organs and the vaginal smears were indistinguishable from those of testosterone-treated rats with eyes. These data indicate that the inhibitory influence of blinding on the pituitary-ovarian axis was mediated through the sympathetic nervous system and the pineal gland. The restraining influence of light deprivation on the growth of the reproductive organs was not permanent as illustrated by the fact that if these animals were kept to 120 days of age the ovaries and uteri grew to the same level as those of pinealectomized control rats.

Effect of Long-Term Light Deprivation on α-Tocopherol Content in Rats during Ontogeny

2021 ◽  
Vol 170 (3) ◽  
pp. 294-298
Author(s):  
I. V. Baishnikova ◽  
T. N. Ilyina ◽  
E. A. Khizhkin ◽  
V. A. Ilyukha ◽  
I. A. Vinogradova
Keyword(s):  
Tocopherol Content ◽  
Light Deprivation

scholarly journals The influence of light deprivation on implantation in the rat

1971 ◽  
Vol 23 (5) ◽  
pp. 354-355
Author(s):  
Sara C. Gilman ◽  
Gloria J. Fischer
Keyword(s):  
Light Deprivation
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