Abstract：
:New features of actual choice behavior and effortful information processing in rats were demonstrated in an eight-arm radial maze through modifications of a matching-to-sample task. Two attempts were allowed for a squad of hooded Sprague-Dawley rats (n=7) for finding a reward in a testing phase of the task. The results showed flexibility and sooner learning to matching rule on the second testing attempt that was only later followed by an improvement of choice accuracy on the first attempt. "Hidden learning" on the second attempt could reflect memories and behavioral strategy, which were present, but not expressed on the first choice. The hypothesis was advanced that learning expressed on the second attempt reflects encoding of a matching rule, whereas improvement on the first choice reflects changes in the rank of acquired memories and behavioral strategy. A second experiment on the same squad of rats tested the ability of trained animals to rank already acquired memories. Following the introduction of the second sample to the study phase of the task, the rats learned to prefer to match the first sample in the testing phase, rearranging ranks of stored memories under the internal control of win-stay strategy. Alternative explanations of interference, trace decay and ranking were compared in order to account for the present results.
journal_name
Acta Neurobiol Exp (Wars)journal_title
Acta neurobiologiae experimentalisauthors
Stolberg Asubject
Has Abstractpub_date
2005-01-01 00:00:00pages
39-49issue
1eissn
0065-1400issn
1689-0035journal_volume
65pub_type
杂志文章abstract：:Depolarization of cultured astrocytes by KCl stimulated gamma-aminobutyric acid (GABA) release in a dose-dependent manner. At 60 mM KCl, the stimulatory effect was calcium- and sodium- independent, and was not altered by the presence of beta-alanine. The potassium-evoked GABA release was inhibited by furosemide and 4-...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：1998-01-01 00:00:00
abstract：:In psychophysical experiments, subjects matched two spatial intervals of a three-spot stimulus into what appeared to them to be equal. The stimulus was flanked by stripes. The length matching errors increased in proportion to the referent interval of the stimulus and approached 6-12 percent of its length. Also, the er...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：2005-01-01 00:00:00
abstract：:Two experiments involving parallel procedures to investigate stimulus generalization in prefrontal dogs under alimentary and defensive reinforcement were compared. Twelve dogs in the alimentary study were trained on a 50 percent partial reinforcement schedule, and 24 dogs were trained to avoid shock with either contin...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：1982-01-01 00:00:00
abstract：:Response generalization to a novel stimulus occurs when the new stimulus shares common features with the stimulus used in the original learning. Given the many recent studies suggesting that the perirhinal cortex is critical for disambiguating stimuli that share representational/perceptual elements, we hypothesize tha...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：2014-01-01 00:00:00
abstract：:For years, interneurons expressing vasoactive intestinal peptide (VIP) interneurons and their function within the neocortex have been shrouded in mystery. Their relatively small size and minimal representation in the cortex have made investigation difficult. Due to their service role performed in co‑operation with gli...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：2019-01-01 00:00:00
abstract：:A subdivided path in the visual field usually appears longer than an empty path of the same length. This phenomenon, known as the filled/empty or Oppel-Kundt illusion, depends on multiple properties of the visual stimulus, but the functional dependences have not been yet precisely characterized. We studied the illusor...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：2010-01-01 00:00:00
abstract：:Persons with trisomy 21 (Down syndrome) present different phenotypes, including early neurodegeneration, which is prominent in the brain olfactory areas, and olfactory deficit. The use of in vivo techniques in animal models allows to characterize and follow up these slowly developing phenomena. We explored by means of...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：2020-01-01 00:00:00
abstract：:The evoked cardiac response (ECR) may be described as the sum of two independent response components: an initial HR deceleration (ECR1) and a slightly later acceleration (ECR2) hypothesized to reflect stimulus registration and cognitive processing load, respectively. This study investigated processing load effects in ...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：2009-01-01 00:00:00
abstract：:The relationship between neocortical high voltage spindle activity (HVS) and the level of arousal (state of vigilance) was investigated in imp-DAK rats. Two groups of single records (6 h and 24 h) and one group of repeated ones (6 h daily for three consecutive days) were analysed. Five levels of arousal (states) were ...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：1994-01-01 00:00:00
abstract：:This study evaluates the role of glycine in in vivo modulation of the activity of excitatory amino acid receptors sensitive to N-methyl-D-aspartate (NMDA) in the rabbit hippocampus. Changes of extracellular calcium concentration were studied by the microdialysis technique combined with 45Ca-utilizing clearance method....
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：1992-01-01 00:00:00
abstract：:We report here the microglial (macrophage) and astrocytic reaction in several models of transmissible spongiform encephalopathies (TSEs) or prion diseases. With the low power electron microscopy it was readily apparent that myelinated vacuoles were surrounded by cells and their processes. The latter belonged either to...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：2002-01-01 00:00:00
abstract：:Fifteen laboratory born cats were used: seven binocularly deprived, four reared under condition of daily alternating monocular exposure and four controls. At the 7th month of age four of the binocularly deprived cats and all the remaining cats were trained monocularly in a two choice apparatus. In the first stage of t...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：1986-01-01 00:00:00
abstract：:The involvement of calcium ions in mechanisms of ischemic brain injury has been suggested for several years. Our understanding of the role of intracellular Ca2+ as a trigger of acute neurotoxicity and in the induction of long lasting processes leading to necrotic and/or apoptotic postischemic delayed neuronal death or...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章,评审
doi：
更新日期：1996-01-01 00:00:00
abstract：:Studies were performed on 46 units of medial gastrocnemius muscles in 23 rats. In the examined population, three types of motor units were distinguished: fast fatigable (FF), fast resistant (FR) and slow (S) units. The studied muscle was stretched with force gradually increasing from 0.5 to 10 g. Most of FF units and ...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：1990-01-01 00:00:00
abstract：:The cortex of the middle suprasylvian sulcus was removed unilaterally in cats with brain stem transected at the pretrigeminal level. The vertical following reflex was evoked by a slit of light (1 degree x 4 degrees) moving along the vertical meridian or parallel to it up to 40 degrees in the left or right hemifield. T...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：1994-01-01 00:00:00
abstract：:Twenty two months old and eight months old rats were used. They were submitted to object recognition test with 1 min interval between two successive presentations of the same object or two different objects. Initial exploration of the object was lower in aged than in young rats. However, both groups showed comparable ...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：1994-01-01 00:00:00
abstract：:The effect of anorectic dose of amphetamine on some correlates of arousal (hippocampal EEG and EOG activity) was examined in cats. After injection of amphetamine the frequency of hippocampal rhythmic slow activity and EOG activity increased when preinjection value of rhytmic slow activity was low, but decreased when i...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：1986-01-01 00:00:00
abstract：:Abnormal auditory temporal processing might be an underlying deficit in language disabilities. The auditory temporal-order threshold, one measure for temporal processing abilities, is defined as the shortest time interval between two acoustic events necessary for a person to be able to identify the correct temporal or...
journal_title：Acta neurobiologiae experimentalis
pub_type： 临床试验,杂志文章
doi：
更新日期：2004-01-01 00:00:00
abstract：:An autoshaping procedure, in which presentation of a retractable lever signalled food delivery, was used to assess the effects of ventral tegmental area lesions on appetitive classically conditioned responses in 28 rats. Rats with ventral tegmental area lesions did not differ from sham-lesioned rats in acquiring class...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：1987-01-01 00:00:00
abstract：:In the present study the functional role of SH groups in the Ca(2+)-independent K(+)-selective channel activity in the membrane of bovine adrenal gland chromaffin granules has been studied. Ionic channel activity has been estimated using 86Rb+, a K+ analogue, flux measurements. The inhibition of chromaffin granules K+...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：1997-01-01 00:00:00
abstract：:Quercetin, one of the major flavonoids, exhibits many beneficial effects on human organism as antihistamine, antioxidant, anti-inflammatory, anticancer and antiviral drug. It is recommended as supplement of healthy diet but still the knowledge of its beneficial effect on normal cells is not satisfactory. We decided to...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：2008-01-01 00:00:00
abstract：:Sham operated controls and four groups of rats subjected to ablation of various parts of their frontal cortex were compared in food and water intake and four behavioural tasks. The ablations were aimed at removing (1) the ventral prefrontal cortex, (2) the dorsal part of the medial prefrontal cortex, (3) the total med...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：1993-01-01 00:00:00
abstract：:Connnections of the cortical region situated in the medial and lateral walls of the presylvian fissure in the dog were investigated using the method of retrograde HRP transport. The patterns of subcortico-cortical and cortico-cortical projections sho,w that the cortical field of the medial presylvian wall (paraorbital...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：1984-01-01 00:00:00
abstract：:Data by the author, as well as from other laboratories, show residual fear as the main source of intertrial responses (ITR) during defensive instrumental training in rats, cats and dogs. Between-subject differences in ITR rate arise in the course of training. The differences depend on training conditions and on subjec...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章,评审
doi：
更新日期：1993-01-01 00:00:00
abstract：:During luteolysis in sheep, episodic pulses of oxytocin (OT), contributed by the neurohypophysis and the corpus luteum (CL), stimulate uterine luteolytic pulses of prostaglandin (PG) F2 alpha via endometrial OT receptors. To distinguish relative contributions of neurohypophysial and luteal OT, ovariectomized sheep wer...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：1996-01-01 00:00:00
abstract：:Thyroid hormones are essential for normal brain development and very important in the normal functioning of the brain. Thyroid hormones action in the adult brain has not been widely studied. The effects of adult hyperthyroidism are not as well understood as adult hypothyroidism, mainly in hippocampal granular cells. T...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：2012-01-01 00:00:00
abstract：:It is well known that the fetal ethanol exposure and prenatal stress may have adverse effects on brain development. Interestingly, some morphological and functional recovery from their teratogenic effects that take place during brain maturation. However, mechanisms that underlie this recovery are not fully elucidated....
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：2019-01-01 00:00:00
abstract：:The parabrachial complex has been related to various rewarding or aversive behavioral processes, including taste aversion learning and conditioned place aversion. This study examined the effect of tiapride, an antagonist of D2/D3 dopaminergic receptors, on place aversion induced by electrical stimulation of the extern...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：2014-01-01 00:00:00
abstract：:In this study we evaluated biochemical blood serum parameters and the association of Cyclin-dependent kinase 5 (CDK5) gene polymorphisms with the risk of Alzheimer's disease (AD) in the Polish population. We observed an elevated total cholesterol, low-density lipoproteins (LDL) and homocysteine levels and lower concen...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：2012-01-01 00:00:00
abstract：:Time characteristics of lateral-hypothalamic self-stimulation were analyzed in rats using point process statistics. Inter-barpressing interval distributions were usually unimodal and asymmetrical and resembled shifted exponential distribution, i.e. bar-pressings seem to be performed more or less randomly over time. Wh...
journal_title：Acta neurobiologiae experimentalis
pub_type： 杂志文章
doi：
更新日期：1980-01-01 00:00:00
