Role of the head of the caudate nucleus and the orbital cortex in neuronal activity of tegmentum of the midbrain in a food reflex in cats

1997 ◽  
Vol 27 (5) ◽  
pp. 562-565
Author(s):  
Yu. M. Dryagin
Keyword(s):  
Caudate Nucleus ◽  
Neuronal Activity ◽  
Orbital Cortex ◽  
Food Reflex

Modulation of acetylcholine release by cholecystokinin in striatum – receptor specificity; role of dopaminergic neuronal activity

2012 ◽  
Vol 89 (5-6) ◽  
pp. 177-184 ◽  
Author(s):  
Polina Petkova-Kirova ◽  
Maria Grazia Giovannini ◽  
Reni Kalfin ◽  
Angelina Rakovska
Keyword(s):  
Neuronal Activity ◽  
Acetylcholine Release ◽  
Receptor Specificity

scholarly journals Dissociable roles of cortical excitation-inhibition balance during patch-leaving versus value-guided decisions

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Luca F. Kaiser ◽  
Theo O. J. Gruendler ◽  
Oliver Speck ◽  
Lennart Luettgau ◽  
Gerhard Jocham
Keyword(s):  
Decision Making ◽  
Prefrontal Cortex ◽  
Neuronal Activity ◽  
Ventromedial Prefrontal Cortex ◽  
Anterior Cingulate ◽  
Mutual Inhibition ◽  
Dorsal Anterior Cingulate Cortex ◽  
Cortical Excitation ◽  
The Cost

AbstractIn a dynamic world, it is essential to decide when to leave an exploited resource. Such patch-leaving decisions involve balancing the cost of moving against the gain expected from the alternative patch. This contrasts with value-guided decisions that typically involve maximizing reward by selecting the current best option. Patterns of neuronal activity pertaining to patch-leaving decisions have been reported in dorsal anterior cingulate cortex (dACC), whereas competition via mutual inhibition in ventromedial prefrontal cortex (vmPFC) is thought to underlie value-guided choice. Here, we show that the balance between cortical excitation and inhibition (E/I balance), measured by the ratio of GABA and glutamate concentrations, plays a dissociable role for the two kinds of decisions. Patch-leaving decision behaviour relates to E/I balance in dACC. In contrast, value-guided decision-making relates to E/I balance in vmPFC. These results support mechanistic accounts of value-guided choice and provide evidence for a role of dACC E/I balance in patch-leaving decisions.

scholarly journals On Synchronizing Coupled Retinogeniculocortical Pathways: A Toy Model

2018 ◽  
Vol 2018 ◽  
pp. 1-6
Author(s):  
B. L. Mayer ◽  
L. H. A. Monteiro
Keyword(s):  
Neural Network ◽  
Visual Cortex ◽  
Corpus Callosum ◽  
Neuronal Activity ◽  
Network Topology ◽  
Cerebral Hemisphere ◽  
State Transition ◽  
Regular Lattice ◽  
Visual Cortices

A Newman-Watts graph is formed by including random links in a regular lattice. Here, the emergence of synchronization in coupled Newman-Watts graphs is studied. The whole neural network is considered as a toy model of mammalian visual pathways. It is composed by four coupled graphs, in which a coupled pair represents the lateral geniculate nucleus and the visual cortex of a cerebral hemisphere. The hemispheres communicate with each other through a coupling between the graphs representing the visual cortices. This coupling makes the role of the corpus callosum. The state transition of neurons, supposed to be the nodes of the graphs, occurs in discrete time and it follows a set of deterministic rules. From periodic stimuli coming from the retina, the neuronal activity of the whole network is numerically computed. The goal is to find out how the values of the parameters related to the network topology affect the synchronization among the four graphs.

Role of adrenergic neuronal activity in the yawning induced by tacrine and NIK-247 in rats

1992 ◽  
Vol 43 (4) ◽  
pp. 985-991 ◽  
Author(s):  
Hiroshi Kimura ◽  
Katsushi Yamada ◽  
Mariko Nagashima ◽  
Shin-ichiro Matsumoto ◽  
Yutaka Ishii ◽  
...  
Keyword(s):  
Neuronal Activity
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