{"title":"Parallel information processing in the water maze: Evidence for independent memory systems involving dorsal striatum and hippocampus","authors":"Robert J. McDonald, Norman M. White","doi":"10.1016/S0163-1047(05)80009-3","DOIUrl":"10.1016/S0163-1047(05)80009-3","url":null,"abstract":"<div><p>This experiment investigated the ability of rats withdorsal striatal or fornix damage to learn the location of a visible platform in a water maze. We also assessed the animals' ability to find the platform when it was hidden (submerged). Rats with neurotoxic damage to the dorsal striatum acquired both the visible and hidden platform versions of the task, but when required to choose between the spatial location they had learned and the visible platform in a new location they swam first to the old spatial location. Rats with radio-frequency damage to the fornix acquired the visible platform version of the water maze task but failed to learn about the platform's location in space. When the visible platform was moved to a new location they swam directly to it. Normal rats acquired both the visible and hidden platform versions of the task. These findings suggest that in the absence of a functional neural system that includes dorsal striatum, spatial information predominantly controlled behavior even in the presence of a cue that the animals had previously been reinforced for approaching. In the absence of a functional hippocampal system behavior was not affected by spatial information and responding to local reinforced cues was enhanced. The results support the idea that different neural substrates in the mammalian nervous system acquire different types of information simultaneously and in parallel.</p></div>","PeriodicalId":8732,"journal":{"name":"Behavioral and neural biology","volume":"61 3","pages":"Pages 260-270"},"PeriodicalIF":0.0,"publicationDate":"1994-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0163-1047(05)80009-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"19061943","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Julie A. Varner , William J. Horvath , Carmen W. Huie , H.R. Naslund , Robert L. Isaacson
{"title":"Chronic aluminum fluoride administration","authors":"Julie A. Varner , William J. Horvath , Carmen W. Huie , H.R. Naslund , Robert L. Isaacson","doi":"10.1016/S0163-1047(05)80006-8","DOIUrl":"10.1016/S0163-1047(05)80006-8","url":null,"abstract":"<div><p>This study examined the behavioral effects of chronicingestion of various monofluoroaluminum complexes (AlF<sub>3</sub>) in drinking water. Forty young adult male Long-Evans rats were divided into four groups of 10 rats each. The groups received different concentrations of AlF<sub>3</sub> in the drinking water from three sample solutions having a total Al concentration of 0.5, 5.0, and 50 ppm, respectively, or double-distilled deionized water on an <em>ad lib</em>. basis for 45 weeks. General decline of bodily appearance was observed in the lowest concentration AlF<sub>3</sub> group, and animals in this group succumbed in greater numbers during the course of the study than those in any other group. Examinations of performance in an open field, an analysis of walking patterns, and a balance beam test did not find any difficulties indicative of motor disorder. Indeed, on the initial trial on the balance beam, the AlF<sub>3</sub>-treated animals exhibited superior performance. No group differences were found in behavior assessed by spontaneous alternation or by a modified Morris water maze test. When retested in the Morris maze after a low dose of scopolamine (0.4 mg/kg), the control animals took longer to reach the platform while the AlF<sub>3</sub>-treated rats were not affected. In an olfactory preference test, the AlF<sub>3</sub>-treated animals failed to show preferences exhibited by the controls, indicating a possible olfactory impairment. The level of Al in the brains of the AlF<sub>3</sub>-exposed rats, as determined by direct current plasma analysis, was almost double that of the control animals. There was a similar trend for the Al content found in the kidneys.</p></div>","PeriodicalId":8732,"journal":{"name":"Behavioral and neural biology","volume":"61 3","pages":"Pages 233-241"},"PeriodicalIF":0.0,"publicationDate":"1994-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0163-1047(05)80006-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"19061976","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. Mintz, D.G. Lavond, A.A. Zhang, Y. Yun, R.F. Thompson
{"title":"Unilateral inferior olive NMDA lesion leads to unilateral deficit in acquisition and retention of eyelid classical conditioning","authors":"M. Mintz, D.G. Lavond, A.A. Zhang, Y. Yun, R.F. Thompson","doi":"10.1016/S0163-1047(05)80004-4","DOIUrl":"10.1016/S0163-1047(05)80004-4","url":null,"abstract":"<div><p>New Zealand White rabbits (<em>Oryctolagus cuniculus</em>)were trained for acquisition (<em>N</em>=21) or retention (<em>N</em>=10) of classical eyelid conditioning with unilateral or bilateral <em>N</em>-methyl-<span>dl</span>-aspartate chemical lesions of the rostromedial dorsal accessory inferior olive (rmDAO; multiple injections totaling 76 to 342 nmol). In all instances, subjects were unable to learn or retain, conditioning on the side contralateral to the lesion. Learning rates were comparable for lesions outside of the rmDAO and sham operates. These findings demonstrate a specific unilateral deficit whereas in previous research the answer to this question was ambiguous since electrolytic lesions effectively cause bilateral olivary lesions. This research agrees with the concept that the inferior olive, projects essential information about the unconditioned stimulus to a cerebellar locus of learning and memory for classical conditioning.</p></div>","PeriodicalId":8732,"journal":{"name":"Behavioral and neural biology","volume":"61 3","pages":"Pages 218-224"},"PeriodicalIF":0.0,"publicationDate":"1994-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0163-1047(05)80004-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"19061974","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Contents of volume 61","authors":"","doi":"10.1016/S0163-1047(05)80013-5","DOIUrl":"https://doi.org/10.1016/S0163-1047(05)80013-5","url":null,"abstract":"","PeriodicalId":8732,"journal":{"name":"Behavioral and neural biology","volume":"61 3","pages":"Pages III-IIV"},"PeriodicalIF":0.0,"publicationDate":"1994-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0163-1047(05)80013-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"92236561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jaime L. Diaz-Granados , Paul L. Greene , Abram Amsel
{"title":"Selective activity enhancement and persistence in weanling rats after hippocampal X-irradiation in infancy: Possible relevance for ADHD","authors":"Jaime L. Diaz-Granados , Paul L. Greene , Abram Amsel","doi":"10.1016/S0163-1047(05)80008-1","DOIUrl":"10.1016/S0163-1047(05)80008-1","url":null,"abstract":"<div><p>We examined the effects of focal X-irradiation of thehippocampus in infancy on the partial reinforcement extinction effect (PREE) in weanling rats in a runway and on running wheel activity at 40 days of age. Our results show a dose-dependent X-irradiation-related reduction in granule cell neurogenesis. Weanling rats showed a corresponding increase in running speed in both acquisition and extinction and a dose-dependent reduction in the PREE-an increase in persistence after CRF and a decrease in persistence after PRF training. The same degree of hippocampal granule cell agenesis had no effect on running wheel activity. These results suggest that the enhanced speeds in the runway are incentive-related and do not reflect simple hyperactivity but rather hyperreactivity. The discussion of these results is in part a speculation regarding their possible relation to some explanations of attention deficit-hyperactivity disorder in children.</p></div>","PeriodicalId":8732,"journal":{"name":"Behavioral and neural biology","volume":"61 3","pages":"Pages 251-259"},"PeriodicalIF":0.0,"publicationDate":"1994-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0163-1047(05)80008-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"19061942","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Ontogeny of serotonin-immunoreactive neurons in juvenile Aplysia californica: Implications for the development of learning","authors":"Thomas G. Nolen , Thomas J. Carew","doi":"10.1016/S0163-1047(05)80011-1","DOIUrl":"10.1016/S0163-1047(05)80011-1","url":null,"abstract":"<div><p>Serotonin has been implicated in both nonassociative learning (sensitization and dishabituation) as well as associative learning (classical conditioning) in <em>Aplysia californica</em>. Dishabituation and sensitization, and their underlying physiological analogs, emerge according to different developmental timetables—sensitization develops 4 to 6 weeks after dishabituation (<span>Rankin & Carew, 1988</span>; <span>Nolen & Carew, 1988</span>; <span>Wright, McCance, Lu, & Carew, 1991</span>). Since the late emergence of sensitization could result from the delayed expression of facilitatory neurotransmitters, we have examined the ontogeny of serotonin immunoreactivity in juvenile <em>A. californica</em> by means of indirect immunohistofluorescence. The purpose of these experiments was to describe the developmental timetable for the expression of serotonin immunoreactivity and to correlate the emergence of immunoreactive neurons with the ontogenetic expression of different forms of learning. While the addition of serotonin-immunoreactive cells tracked the growth of the central nervous system, juveniles contained a relatively higher proportion of immunoreactive cells than adults. Immunoreactive cell bodies were present in the abdominal, cerebral, and pedal ganglia as early as juvenile Stage 9, prior to the emergence of dishabituation in Stage 10. The posterior cerebral cluster (PCC) contained four pairs of immunoreactive cells by Stage 9, including the facilitator CB1, which, as shown in adults, heterosynaptically facilitates siphon sensory neurons. The PCC reached the adult complement of five pairs of cells, by Stage 10, long before the development of sensitization, but at the time corresponding to the emergence of dishabituation. These results suggest that the late emergence of sensitization is not simply a consequence of the late expression of serotonergic facilitatory interneurons.</p></div>","PeriodicalId":8732,"journal":{"name":"Behavioral and neural biology","volume":"61 3","pages":"Pages 282-295"},"PeriodicalIF":0.0,"publicationDate":"1994-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0163-1047(05)80011-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"19061945","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Simon F. Crowe, Wei-Qin Zhao, G.L. Sedman, Kim T. Ng
{"title":"2-Deoxygalactose interferes with an intermediate processing stage of memory","authors":"Simon F. Crowe, Wei-Qin Zhao, G.L. Sedman, Kim T. Ng","doi":"10.1016/S0163-1047(05)80002-0","DOIUrl":"10.1016/S0163-1047(05)80002-0","url":null,"abstract":"<div><p>The effect of 2-deoxygalactose (2-D-gal), an inhibitor of glycoprotein synthesis, on memory formation was investigated with the day-old chick trained on a single-trial passive discrimination task. 2-D-gal (10 <em>μ</em>mol/chick) was shown to inhibit memory formation at a time before the emergence of an antibiotic-sensitive long-term memory stage. The amnestic effect of 2-D-gal was successfully prevented by galactose, and more significantly by noradrenaline. In contrast, anisomycin-induced amnesia was resistant to challenge by either galactose or noradrenaline. The results are consistent with the view that some glycoprotein involvement in memory formation occurs prior to the formation of protein synthesis-dependent long-term memory, and this role of glycoproteins may be associated with the triggering of long-term memory formation by noradrenaline.</p></div>","PeriodicalId":8732,"journal":{"name":"Behavioral and neural biology","volume":"61 3","pages":"Pages 206-213"},"PeriodicalIF":0.0,"publicationDate":"1994-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0163-1047(05)80002-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"19061972","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Inhibitors of phospholipase A2 produce amnesia for a passive avoidance task in the chick","authors":"Christian Hölscher , Steven P.R. Rose","doi":"10.1016/S0163-1047(05)80005-6","DOIUrl":"10.1016/S0163-1047(05)80005-6","url":null,"abstract":"<div><p>The effects of blocking phospholipase A<sub>2</sub> (PLA<sub>2</sub>), a key enzyme in arachidonic acid (ArA) release, on memory retention have been studied in a one-trial passive avoidance task in the day-old chick. Bilateral intracerebral injections of the PLA<sub>2</sub> and lipoxygenase inhibitor nordihydroguaiaretic acid (NDGA) (15 μl of 4 m<em>M</em> NDGA/hemisphere, calculated to give an equivalent intracerebral concentration of 120 μ<em>M</em>) or the PLA<sub>2</sub> inhibitor aristolochic acid (AST) (5 μl of a 4 m<em>M</em> AST/hemisphere, calculated to give an equivalent intracerebral concentration of ∼40 μ<em>M</em>) were made into the intermediate medial hyperstriatum ventrale (IMHV), an area that is of crucial importance for memory formation in the chick in this task. Pretraining injections of either inhibitor resulted in the chicks showing lasting amnesia for the avoidance response. The onset of amnesia with both inhibitors NDGA and AST was at 1.25 h post-training. Injection of drugs post-training had no effect on retention. Time and dose dependencies of both drugs were evaluated. Additional tests showed that the amnestic effect is not due to state-dependent learning nor to interference of the drugs with general motor ability or motivation. The results support the theory that arachidonic acid release is a necessary step in the early, although not immediate, events mediating the synaptic plasticity associated with memory formation. This is compatible with the hypothesis that ArA may serve as a late retrograde messenger between post- and presynaptic sites of plasticity, although it is not proof of such a role.</p></div>","PeriodicalId":8732,"journal":{"name":"Behavioral and neural biology","volume":"61 3","pages":"Pages 225-232"},"PeriodicalIF":0.0,"publicationDate":"1994-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0163-1047(05)80005-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"19061975","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Author index for volume 61","authors":"","doi":"10.1016/S0163-1047(05)80012-3","DOIUrl":"https://doi.org/10.1016/S0163-1047(05)80012-3","url":null,"abstract":"","PeriodicalId":8732,"journal":{"name":"Behavioral and neural biology","volume":"61 3","pages":"Page 296"},"PeriodicalIF":0.0,"publicationDate":"1994-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0163-1047(05)80012-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"92257415","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Diana Jerusalinsky, Jorge A. Quillfeldt, Roger Walz, Ricardo C. Da Silva, Jorge H. Medina, Ivan Izquierdo
{"title":"Post-training intrahippocampal infusion of protein kinase C inhibitors causes amnesia in rats","authors":"Diana Jerusalinsky, Jorge A. Quillfeldt, Roger Walz, Ricardo C. Da Silva, Jorge H. Medina, Ivan Izquierdo","doi":"10.1016/S0163-1047(05)80063-9","DOIUrl":"10.1016/S0163-1047(05)80063-9","url":null,"abstract":"<div><p>This experiment investigated the effect on memory, in rats, of the bilateral intrahippocampal post-training infusion of two different inhibitors of protein kinase C activity, staurosporin and CGP41231. Male Wistar rats were implanted bilaterally with cannulae aimed at the CA1 region of the dorsal hippocampus. After recovery from surgery, they were trained in step-down inhibitory avoidance using a 0.5-mA footshock and tested for retention 24 h later. Immediately or 30, 120, or 180 min after training they received, through the cannulae, infusions of vehicle, staurosporin (1.0 μg), or CGP41231 (2.5 μg). The two drugs caused full retrograde amnesia when given immediately or 30 min post-training, partial amnesia when given 120 min after training, and had no effect when given 180 min after training. The results support the suggestion that memory involves long-term potentiation initiated at the time of training in the hippocampus. Inhibitors of protein kinase C block the development of long-term potentiation when administered in the first 2 h after induction.</p></div>","PeriodicalId":8732,"journal":{"name":"Behavioral and neural biology","volume":"61 2","pages":"Pages 107-109"},"PeriodicalIF":0.0,"publicationDate":"1994-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0163-1047(05)80063-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"19195541","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}