Publication

A computational model of parallel navigation systems in rodents

Wulfram Gerstner, Ricardo Andres Chavarriaga Lozano, Thomas Strösslin
2005
Journal Articles

Abstract

Several studies in rats support the idea of multiple neural systems competing to select the best action for reaching a goal or food location. Locale navigation strategies, necessary for reaching invisible goals, seem to be mediated by the hippocampus and the ventral and dorsomedial striatum whereas taxon strategies, applied for approaching goals in the visual field, are believed to involve the dorsolateral striatum. A computational model of action selection is presented, where different experts, implementing locale and taxon strategies, compete in order to select the appropriate behavior for the current task. The model was tested in a simulated robot and its performance in an experimental paradigm which dissociates the use of cue and spatial information is compared to the behavior observed in animals.

Official source

https://infoscience.epfl.ch/entities/publication/2817b8f2-57d3-4c53-99a5-b6ad3b5765cc

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Wulfram Gerstner, Ricardo Andres Chavarriaga Lozano, Thomas Strösslin
2005
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/2817b8f2-57d3-4c53-99a5-b6ad3b5765cc

About this result

Related concepts (23)

Striatum

The striatum, or corpus striatum (also called the striate nucleus), is a nucleus (a cluster of neurons) in the subcortical basal ganglia of the forebrain. The striatum is a critical component of the motor and reward systems; receives glutamatergic and dopaminergic inputs from different sources; and serves as the primary input to the rest of the basal ganglia. Functionally, the striatum coordinates multiple aspects of cognition, including both motor and action planning, decision-making, motivation, reinforcement, and reward perception.

Basal ganglia

The basal ganglia (BG), or basal nuclei, are a group of subcortical nuclei, of varied origin, in the brains of vertebrates. In humans, and some primates, there are some differences, mainly in the division of the globus pallidus into an external and internal region, and in the division of the striatum. The basal ganglia are situated at the base of the forebrain and top of the midbrain. Basal ganglia are strongly interconnected with the cerebral cortex, thalamus, and brainstem, as well as several other brain areas.

Cortico-basal ganglia-thalamo-cortical loop

The cortico-basal ganglia-thalamo-cortical loop (CBGTC loop) is a system of neural circuits in the brain. The loop involves connections between the cortex, the basal ganglia, the thalamus, and back to the cortex. It is of particular relevance to hyperkinetic and hypokinetic movement disorders, such as Parkinson's disease and Huntington's disease, as well as to mental disorders of control, such as attention deficit hyperactivity disorder (ADHD), obsessive–compulsive disorder (OCD), and Tourette syndrome.

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