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The cerebral hemispheres and bilateral neural nets.

N D Cook¹, A R Beech

¹Neuropsychology Unit, Neurology Clinic, University Hospital, Zurich, Switzerland.

The International Journal of Neuroscience

|June 1, 1990

Summary

This study explores the cognitive dichotomy of language and context, revealing how the right hemisphere processes context while the left handles literal language. Inhibitory neural connections explain this hemispheric asymmetry.

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Area of Science:

Neuroscience
Cognitive Science
Psycholinguistics

Background:

The human brain exhibits functional lateralization, with distinct roles for the left and right cerebral hemispheres.
Understanding the neural basis of cognitive dichotomies like language versus context is crucial for cognitive system organization.

Purpose of the Study:

To review the cognitive dichotomy of language and context in relation to cerebral hemisphere functions.
To propose a model for generating asymmetrical neural activity in bilateral nets.

Main Methods:

Review of empirical findings on human cerebral hemisphere functions.
Theoretical modeling of neural networks with inhibitory connections.

Main Results:

The right hemisphere contributes to connotative and contextual information processing, complementing the left hemisphere's denotative language functions.
A model demonstrates that inhibitory, homotopic connections in bilateral neural nets can generate asymmetric activity without intrinsic processing differences.

Conclusions:

The interplay between left (language) and right (context) hemisphere functions is key to viable cognitive systems.
Asymmetrical hemispheric activity can arise from network connectivity (inhibitory connections) rather than inherent processing differences.

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