[Change in the functional significance of structures of the cat brain as a result of reorganization of its activity]

Area of Science:

• Neuroscience
• Cognitive Neuroscience
• Animal Behavior

Context:

• Investigating the neural basis of spatial memory and decision-making.
• Understanding brain plasticity and functional reorganization following stimulation.
• Utilizing the delayed spatial choice (DSCh) task as a model for cognitive function in cats.

Purpose:

• To determine the functional roles of specific brain regions (frontal, parietal, occipital cortex, hippocampus, thalamus, caudate nucleus) in the DSCh task.
• To examine how compensatory brain reorganization, induced by frontal cortex stimulation, alters the functional significance of these areas.
• To analyze the brain's adaptive mechanisms in cognitive tasks.

Summary:

• The study assessed the involvement of various brain structures in the DSCh task in 8 adult cats before and after induced brain activity reorganization.
• Prior to reorganization, the frontal cortex, hippocampus, and mediodorsal thalamic nucleus were critical for DSCh performance.
• Following compensatory reorganization via frontal cortex electrical stimulation, the parietal and occipital cortical areas became essential for the DSCh task, indicating a shift in functional brain networks.

Impact:

• Demonstrates the dynamic and adaptable nature of brain function in cognitive tasks.
• Highlights the principle of brain integrity, where functional significance can shift between regions.
• Provides insights into neural mechanisms underlying learning and adaptation in complex spatial tasks.