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The Neural Circuit for Spatial Representation
How do we find our way? The discovery of medial entorhinal cortex grid cells in 2005 stimulated a wide variety of experimental, theoretical and computational work aimed at elucidating the neural circuit underlying spatial representations in the entorhinal cortex. However, grid cells act in concert with place cells, head direction cells and border cells, each playing a part in the spatial navigation circuit. The aim of this Research Topics is to solicit contributions from leading researchers in the field of spatial navigation and spatial memory to present new experimental data, computational modeling or discussion on mechanisms underlying the neural encoding of space in the parahippocampal cortices.
A Computational Model of Grid Cells based on a Recursive Growing Neural Gas
The entorhinal cortex of rat contains neurons, called "grid cells", that exhibit a very peculiar behavior. Discovered about a decade ago, the activity of these cells was found to correlate with the allocentric position of the animal by forming a regular, hexagonal lattice of firing fields across the entire environment. Due to this unusual behavior and the proximity of the entorhinal cortex to other brain regions that also contain cells with spatially correlated activity grid cells are commonly recognized as an important element of a neuronal system for navigation. Existing computational models of grid cells share this view and typically describe the behavior of grid cells as a path integrati...
Organic Bioelectronics for Neurotransmitter Release at the Speed of Life
The signaling dynamics in neuronal networks includes processes ranging from lifelong neuromodulation to direct synaptic neurotransmission. In chemical synapses, the time delay it takes to pass a signal from one neuron to the next lasts for less than a millisecond. At the post-synaptic neuron, further signaling is either up- or down-regulated, dependent on the specific neurotransmitter and receptor. While this up- and down-regulation of signals usually runs perfectly well and enables complex performance, even a minor dysfunction of this signaling system can cause major complications, in the shape of neurological disorders. The field of organic bioelectronics has the ability to interface neuro...
Dynamic Brain - from Neural Spikes to Behaviors
This volume contains invited and contributed papers presented at the 12th edition of the International Summer School on Neural Networks "Eduardo R. Caianiello," co-organized by the RIKEN BSI (Japan) and the Department of Physics of the U- versity of Salerno (Italy). The 12th edition of the school was directed by Maria Marinaro (University of Salerno), Silvia Scarpetta (University of Salerno) and Yoko Yamaguchi (RIKEN BSI Japan) and hosted in the Ettore Majoranca Center in Erice in Italy. The contributions collected in this book are aimed at providing primarily high-level tutorial coverage of the fields related to neural dynamics, reporting recent experim- tal and theoretical results investig...
Landmarks
This book covers the latest research on landmarks in GIS, including practical applications. It addresses perceptual and cognitive aspects of natural and artificial cognitive systems, computational aspects with respect to identifying or selecting landmarks for various purposes, and communication aspects of human-computer interaction for spatial information provision. Concise and organized, the book equips readers to handle complex conceptual aspects of trying to define and formally model these situations. The book provides a thorough review of the cognitive, conceptual, computational and communication aspects of GIS landmarks. This review is unique for comparing concepts across a spectrum of ...
Путеводный нейрон. Как наш мозг решает пространственные задачи
Навыки навигации глубоко укоренились в нашей биологии. Способность находить путь на большие расстояния в доисторические времена дала Homo sapiens эволюционное преимущество, позволяя исследовать самые отдаленные уголки планеты. Умение ориентироваться тесно связано с другими важными когнитивными функциями, такими как абстрактное мышление, воображение и память. Майкл Бонд обобщает ...
Science
A weekly record of scientific progress.
Revue de l'hypnose et de la santé N°18 - 1/2022
La Revue de l'hypnose et de la santé (n° 16) Dans ce numéro, nous posons à l’occasion de notre dossier la question du diagnostic en hypnose. L’intuition est certainement une compétence du praticien en hypnose. Pour autant, comme le disait Jacques-Antoine Malarewicz, « l’intuition, ça se forme ». Pour autant, quelle démarche le praticien a-t- il à effectuer pour mettre en oeuvre telle ou telle technique, telle ou telle approche ? Y a-t- il en hypnose, un diagnostic, ou en tout cas une démarche diagnostique spécifique qui mènerait ou en tout cas aiderait au choix de l’intervention ? Que faire avec un patient ayant une peur exagérée d’être malade, ou s’apprêtant à ...
길 잃은 사피엔스를 위한 뇌과학
호모사피엔스가 최후의 승자가 될 수 있었던 비결 낯선 장소에서 우리는 어떻게 길을 찾을까? 어린 시절의 탐험 본능은 왜 나이가 들면 사라질까? 왜 어떤 사람은 다른 사람보다 길을 훨씬 잘 찾을까? 길을 잃은 사람들은 왜 비상식적인 행동을 하게 될까? 치매 환자에게 길 찾기란 어떤 의미일까? 『길 잃은 사피엔스를 위한 뇌과학』은 영국심리학회 저술상 수상작가인 마이클 본드의 신작으로, 뇌과학, 행동과학, 인류학, 심리학 등을 통해 인간이 어떻게 길을 찾으면서 세상을 탐색하고, 길 찾기 능력을 발달시키는지에 대한 종...
Beyond the Cognitive Map
There are currently two major theories about the role of the hippocampus, a distinctive structure in the back of the temporal lobe. One says that it stores a cognitive map, the other that it is a key locus for the temporary storage of episodic memories. A. David Redish takes the approach that understanding the role of the hippocampus in space will make it possible to address its role in less easily quantifiable areas such as memory. Basing his investigation on the study of rodent navigation--one of the primary domains for understanding information processing in the brain--he places the hippocampus in its anatomical context as part of a greater functional system. Redish draws on the extensive...
