Showing papers in "Behavioral and Neural Biology in 1989"

TL;DR: The results are consistent with the notion that the hippocampal formation is essential to learning that involves control exerted by a configural relationship among cues, independently of the spatial or conditional requirements of tasks.

TL;DR: All of these processes are time dependent, all may depend on stimulus aftereffects, each is differently affected by drugs given in the post-training period, and all may interact with each other.

TL;DR: Data indicated that pharmacological manipulation of GABA-A receptors within the medial septum modifies working memory processes, and therefore, drugs or artificial cerebrospinal fluid administered immediately following the predelay session produced a dose-dependent impairment in maze performance.

TL;DR: The results support the view that the GABAergic system is involved in the modulation of memory storage and that the amygdaloid complex may be a critical site for effects of drugs affecting the inhibitory avoidance response.

TL;DR: Support is taken for the notion that NE plays a role in memory retrieval processes by using the α-2 adrenoceptor antagonist idazoxan to increase noradrenergic activity to alleviate forgetting in rats.

TL;DR: Findings indicate that A.Th.

TL;DR: Combined treatment with scopolamine and mecamylamine significantly decreased choice accuracy relative to either drug alone, and data show that nicotinic and muscarinic blockade have at least additive effects in producing an anterograde memory deficit.

TL;DR: Ketamine seems to attenuate some but not all forms of learning in the tunnel maze and it impairs the acquisition of a spatial navigation task in Wistar rats.

TL;DR: The role of perioral somatosensory stimulation from pups in maternal behavior was investigated in lactating Long-Evans rats during early lactation by local anesthesia of the mystacial pads with lidocaine, which blocks conduction in the infraorbital nerve.

TL;DR: Sodium-dependent high-affinity choline uptake velocities in P2 fractions of the hippocampus and cortex of mice were analyzed at different times following both the first and last daily sessions of a spatial discrimination testing procedure in an eight-arm radial maze.

TL;DR: It was found that the choice accuracy deficit produced by nicotinic blockade is enhanced, not antagonized, by coadministration of haloperidol.

TL;DR: Results appear to indicate that orosensory ethanol processing takes place during acute ethanol intoxication probably due to ethanol elimination via respiration, salivation, and/or hematogenic olfaction processes.

TL;DR: The hypothesis that stereotypy has a coping function which may serve to alter arousal is supported and important differences between the nigrostriatal and mesolimbic dopamine projections in modulating the responsiveness of the neuroendocrine system are suggested.

TL;DR: Results indicate that among the areas examined, the hippocampus is the most important neural substrate of the action of CRF, and the amygdala is also partly responsible for the behavioral effect produced by CRF.

TL;DR: The results indicate that, in physiologically immature rats, alcohol preference can be regulated by prior associative experiences involving the state of intoxication and consequences internal and/or inherent to this state.

TL;DR: It is concluded that vestibular cues are particularly important for the orientation of the animal in the gravitation field and for the estimation of the angles between vectors plotted from the animal toward external landmarks.

TL;DR: The improved acquisition of the PCA-lesioned rats trained in the Stone maze was completely abolished following pretreatment with the selective serotonergic reuptake inhibitor norzimeldine, further underscore the selective role of this neurotransmitter system in the way information is processed by the brain.

TL;DR: Findings indicate that the memory-enhancing effects of post-training administration of picrotoxin are not state-dependent.

TL;DR: Findings are consistent with the hypothesis that these Y chromosomes affect the display of and response to social or other stimuli for offense of mice and may be individual recognition chemosignals in urine.

TL;DR: The behavior of the Syracuse high avoidance (SHA) and Syracuse low avoidance (SLA) rats, selectively bred by Brush to differ in avoidance behavior, was examined in several different tasks to consider differences in emotional reactivity between the two strains.

TL;DR: Results appear to support the hypothesis concerning orosensory processing during an acute state of intoxication, and it seems that the hedonic value of sensory attributes of this drug varies as a function of associative processes occurring during such a state.

TL;DR: Results suggest that atrial gland products, secreted onto the egg cordon as it passes through the oviduct, may play a pheromonal role and induce mating behavior between individuals.

TL;DR: Results lend support to the idea of a reactivation of the new memory trace during PS, and suggest that dynamic processes, similar to those immediately following acquisition or exposure to a reactivating treatment (i.e., a reminder), take place during postlearning PS.

TL;DR: The results indicated that the two measures can vary independently and that the directed exploration component (head-dipping) of the holeboard test does not significantly influence the locomotor activity component.

TL;DR: It is found that synapse density is lower in testosterone-treated birds than in control birds and lower in fall than in spring, suggesting that large reserves of neurotransmitter may be necessary to sustain singing.

TL;DR: It appears that altering the early maternal environment experienced by SHR pups does not grossly affect the development of open-field behavior and cross-fostering has profound effects on cardiovascular development and functioning in the SHR.

TL;DR: These findings indicate that stimulation of GABA receptors within the MR is able to energize a wide range of oral behaviors and is compatible with the view that the MR may be part of a "nonspecific" behavioral activation system.

TL;DR: Variables similar to those affecting feeding behavior also modulate sexual behavior in Aplysia fasciata, indicating that mating is under motivational control.

TL;DR: The results confirm that the amygdala is important in memory processing and suggest that the mechanisms involved in the action of CRF on memory retention of aversive and appetitive learnings are different.

TL;DR: It is concluded that unlearned response biases of perseverating and returning to previous escape sites can be overcome if experimental conditions are appropriately arranged.