Now showing items 31-40 of 176
The effect of cortical undercutting and long-term electrical stimulation on synaptic acetylcholinesterase
(Elsevier, 1971-06-18)
1. (1) A centrifugal fractionation technique was used to study the acetylcholinesterase (AChE) activity in a number of subcellular membrane fractions of cat cerebral cortex. In two groups of animals a marginal gyrus of ...
Intraspinal latency, cutaneous fiber composition, and afferent control of the dorsal root reflex in cat
(Elsevier, 1972-12-12)
The intraspinal delay, fiber composition, and excitability of the cutaneous dorsal root reflex (DRR) was studied in pentobarbital-anesthetized cats.A maximal cutaneous DRR is elicited by a volley of cutaneous fibers with ...
Castration and reproductive behavior in the paradise fish, Macropodus opercularis (L.) (Osteichthyes: Belontiidae)
(Elsevier, 1977-09)
The effects of castration on male spawning behavior, nestbuilding and fertility were measured in a five day spawning trial with an intact female. Spawning and fertility decreased one week following castration while ...
Taste responsiveness, weight loss, and the ponderostat
(Elsevier, 1973-11)
Rats which lost weight due to exercise showed increased acceptance of good tasting food and increased rejection of bad tasting food. This indicates that energy deficit results in heightened taste responsiveness and suggests ...
Technique for chronic electrode or cannula implantation in decorticate animals
(Elsevier, 1975-06)
A surgical technique is described which enables chronic recording of electrophysiological activity and chemical or electrical stimulation in the decorticated animal. This procedure circumvents the problems of inadequate ...
Impairment in sampling visual stimuli in monkeys with inferotemporal lesions
(Elsevier, 1970-03)
Monkeys with inferotemporal (IT) lesions and their controls, monkeys with partial removal of striate cortex (LS) and unoperated monkeys, were trained to discriminate between two stimulus compounds differing in brightness ...
The kinetics of cone visual pigments in man
(Elsevier, 1971-06)
Rushton's general kinetic equation for human cone pigments is tested by estimating the photolysis rate at equilibrium from the initial photolysis rate and comparing it to the equilibrium rate of regeneration measured ...
The temporal structure of reinforcement: An analysis of brain-stimulated reward
(Elsevier, 1979-08)
Adult male Sprague--Dawley rats were implanted with electrodes aimed at the medial forebrain bundle. The electrodes were connected to brushings which permitted chronic electrical self-stimulation. Over time, the rats ...