Now showing items 91-100 of 100
Response repetition in pigeons: pharmacological and behavioral specificity
(Springer-Verlag, 1986-12)
Using a reinforcement schedule that arranges random sequences of reinforcements over two response keys, low and high probabilities of repetition of non-reinforced responses were generated in two groups of pigeons ( n =3 ...
Behavioral effects of dopamine agonists across the estrous cycle in rats
(Springer-Verlag, 1980-11)
The effects of apomorphine upon stereotype and bromocriptine upon wheel running and intracranial reward were examined across the estrous cycle of female rats. Apomorphine elicited stereotypy in a dose-related fashion, but ...
2-amino-6-trifluoromethoxy benzothiazole (PK 26124), a proposed antagonist of excitatory amino acid neurotransmission, does not produce phencyclidine-like behavioral effects in pigeons, rats and rhesus monkeys
(Elsevier, 1988-07)
PK 26124, a proposed excitatory amino acid antagonist, was compared to mephenesin and phencyclldine (PCP).In pigeons, PK 26124 and mephenesin produced loss of righting that was to some extent associated with eye closure ...
Somatostatin in human pancreatic and gastric juice
(Elsevier, 1981)
Considerable amounts of IRS are secreted after secretin injection in human pancreatic juice collected during endoscopic retrograde cholangiopancreatography. The mean IRS levels in the pancreatic juice of non-diabetic ...
Regional processing of the N- and C-terminal domains of proopiomelanocortin in monkey pituitary and brain
(Elsevier, 1988-04)
The total content and extent of processing of the [gamma]3MSH and [beta]-endorphin-containing N- and C-terminal domains of proopiomelanocortin were determined in the anterior and intermediate lobes of the pituitaries and ...
Discriminative stimulus effects of pentobarbital in pigeons
(Springer-Verlag, 1980-11)
Pigeons were trained to discriminate the IM injection of pentobarbital (5 or 10 mg/kg) from saline in a task in which 20 consecutive pecks on one of two response keys produced access to mixed grain. Pentobarbital (1.0–17.8 ...
Interaction between [3H]ethylketocyclazocine and [3H]etorphine and opioid receptors in membranes from rat brain a kinetic analysis
(Elsevier, 1986-04)
Scatchard analysis of the binding to opioid receptors of pHlethylketocyclazocine ([3H]EKC) and [3H]etorphine at equilibrium yielded biphasic plots and computer fitting of the data resulted in a minimal model of two independent ...
Stress induced facilitation of opiate catalepsy in the rat
(Elsevier, 1980)
1. 1. Adult male Sprague-Dawley rats were injected with a standard low dose of opiate (10 mg/kg of morphine sulfate).2. 2. Experimental subjects received one of two stressful procedures (tail pinch, floor cooling) while ...
Chronic use of benzodiazepines and psychomotor and cognitive test performance
(Springer-Verlag, 1986-04)
The performance of 43 long-term users (average = 5 years) of benzodiazepine (BZ) medications was examined on a battery of behavioral tasks, cognitive tests, and subjective mood rating scales. The performance of the chronic ...
Increased sensitivity of adenylate cyclase activity in the striatum of the rat to calmodulin and GppNHp after chronic treatment with haloperidol
(Elsevier, 1986-06)
Chronic treatment of rats with haloperidol causes behavioral supersensitivity to dopaminergic agonists and an increase in the sensitivity of adenylate cyclase activity in the striatum to stimulation by dopamine. In this ...