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Related Experiment Video

Updated: Jun 12, 2026

Modeling the Functional Network for Spatial Navigation in the Human Brain

Modeling the Functional Network for Spatial Navigation in the Human Brain

Published on: October 13, 2023

Field effects in the CNS play functional roles.

Shennan A Weiss¹, Donald S Faber

¹Department of Neuroscience, Albert Einstein College of Medicine Bronx, NY, USA.

Frontiers in Neural Circuits

|May 29, 2010

Summary

Electrical field effects, or ephaptic transmission, occur when one neuron

Area of Science:

Neuroscience
Computational Neuroscience
Electrophysiology

Background:

Ephaptic transmission, the influence of electrical fields from one neuron on another, is known in pathological brain states like epilepsy.
The functional role of ephaptic transmission in the healthy brain remains less understood.
Electrical field effects are observed across diverse neural structures, from fish to mammals.

Purpose of the Study:

To elucidate the principles governing ephaptic transmission.
To review evidence of field effects in various brain regions.
To explore the potential functional significance of these interactions in neural networks.

Main Methods:

Review of existing literature on ephaptic transmission and neural field effects.

Keywords:

LFP computation ephaptic field effect neurotransmission transcranial stimulation

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Analysis of studies demonstrating field effects in different species and brain structures.

Theoretical considerations of how network interactions amplify weak electrical fields.

Main Results:

Endogenous and exogenous electrical field effects are amplified by network interactions, particularly in laminar brain structures.
These amplified field effects are proposed to play a role in generating neural rhythms.
Specific examples include the generation of cortical slow waves and hippocampal sharp wave-ripples.

Conclusions:

Ephaptic transmission, amplified by network interactions, likely contributes to functional processes in the healthy brain.
This mechanism is implicated in the generation of key neural oscillations.
Understanding field effects is relevant for interpreting phenomena like transcranial electrical stimulation.