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8 results on '"Bingman, Verner Peter"'

3. Telencephalic neuronal activation associated with spatial memory in the terrestrial toad, Rhinella arenarum: Participation of the medial pallium during navigation by geometry

Author

Sotelo, María Inés, Daneri, Maria Florencia, Bingman, Verner Peter, and Muzio, Ruben Nestor

Subjects
CIENCIAS SOCIALES, GEOMETRIC AND FEATURE ORIENTATION, purl.org/becyt/ford/5 [https], SPATIAL LEARNING, Otras Psicología, MEDIAL AND LATERAL PALLIA, purl.org/becyt/ford/5.1 [https], NEURONAL ACTIVATION, Psicología
Abstract

Amphibians are central to discussions of vertebrate evolutionbecause they represent the transition from aquatic toterrestrial life, a transition with profound consequences forthe selective pressures shaping brain evolution. Spatial navigationis one class of behavior that has attracted the interestof comparative neurobiologists because of the relevance ofthe medial pallium/hippocampus, yet, surprisingly, in this regardamphibians have been sparsely investigated. In the currentstudy, we trained toads to locate a water goal relying onthe boundary geometry of a test environment (GeometryOnly)or boundary geometry coupled with a prominent, visualfeature cue (Geometry-Feature). Once learning hadbeen achieved, the animals were given one last training sessionand their telencephali were processed for c-Fos activation.Compared to control toads exposed to the test environmentfor the first time, geometry-only toads were found to have increased neuronal labeling in the medial pallium, thepresumptive hippocampal homologue, while geometry-featuretoads were found to have increased neuronal labelingin the medial, dorsal, and lateral pallia. The data indicate medialpallial participation in guiding navigation by environmentalgeometry and lateral, and to a lesser extent dorsal,pallial participation in guiding navigation by a prominent visualfeature. As such, participation of the medial pallium/hippocampus in spatial cognition appears to be a conservedfeature of terrestrial vertebrates even if their life history is stilltied to water, a brain-behavior feature seemingly at least asancient as the evolutionary transition to life on land. Fil: Sotelo, María Inés. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental. Fundación de Instituto de Biología y Medicina Experimental. Instituto de Biología y Medicina Experimental; Argentina. Universidad de Buenos Aires. Facultad de Psicología; Argentina Fil: Daneri, Maria Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental. Fundación de Instituto de Biología y Medicina Experimental. Instituto de Biología y Medicina Experimental; Argentina. Universidad de Buenos Aires. Facultad de Psicología; Argentina Fil: Bingman, Verner Peter. Bowling Green State University; Estados Unidos Fil: Muzio, Ruben Nestor. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental. Fundación de Instituto de Biología y Medicina Experimental. Instituto de Biología y Medicina Experimental; Argentina. Universidad de Buenos Aires. Facultad de Psicología; Argentina

Published
2016

7. Telencephalic Neuronal Activation Associated with Spatial Memory in the Terrestrial Toad Rhinella arenarum: Participation of the Medial Pallium during Navigation by Geometry.

Author

Sotelo, María Inés, Daneri, M. Florencia, Bingman, Verner Peter, and Muzio, Rubén N.

Subjects
SPATIAL memory, CEREBRAL cortex, AMPHIBIANS, VERTEBRATE evolution, HIPPOCAMPUS (Brain)
Abstract

Amphibians are central to discussions of vertebrate evolution because they represent the transition from aquatic to terrestrial life, a transition with profound consequences for the selective pressures shaping brain evolution. Spatial navigation is one class of behavior that has attracted the interest of comparative neurobiologists because of the relevance of the medial pallium/hippocampus, yet, surprisingly, in this regard amphibians have been sparsely investigated. In the current study, we trained toads to locate a water goal relying on the boundary geometry of a test environment (Geometry-Only) or boundary geometry coupled with a prominent, visual feature cue (Geometry-Feature). Once learning had been achieved, the animals were given one last training session and their telencephali were processed for c-Fos activation. Compared to control toads exposed to the test environment for the first time, geometry-only toads were found to have increased neuronal labeling in the medial pallium, the presumptive hippocampal homologue, while geometry-feature toads were found to have increased neuronal labeling in the medial, dorsal, and lateral pallia. The data indicate medial pallial participation in guiding navigation by environmental geometry and lateral, and to a lesser extent dorsal, pallial participation in guiding navigation by a prominent visual feature. As such, participation of the medial pallium/hippocampus in spatial cognition appears to be a conserved feature of terrestrial vertebrates even if their life history is still tied to water, a brain-behavior feature seemingly at least as ancient as the evolutionary transition to life on land. [ABSTRACT FROM AUTHOR]

Published
2017
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8. Hippocampus and Medial Striatum Dissociation During Goal Navigation by Geometry or Features in the Domestic Chick: An Immediate Early Gene Study.

Author

Mayer, Uwe, Pecchia, Tommaso, Bingman, Verner Peter, Flore, Michele, and Vallortigara, Giorgio

Abstract

We employed a standard reference memory task to study the involvement of the hippocampal formation (HF) of domestic chicks that used the boundary geometry of a test environment to orient to and locate a reward. Using the immediate early gene product c-Fos as a neuronal activity marker, we found enhanced HF activation in chicks that learned to locate rewarded corners using the shape of a rectangular arena compared to chicks trained to solve the task by discriminating local features in a square-shaped arena. We also analyzed neuronal activity in the medial part of the medial striatum (mMSt). Surprisingly, in mMSt we observed a reverse pattern, with higher activity in the chicks that were trained to locate the goal by local features. Our results identify two seemingly parallel, memory systems in chicks, with HF central to the processing of spatial-geometrical information and mMSt important in supporting local feature discrimination. [ABSTRACT FROM AUTHOR]

Published
2016
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