Cited by 478Neuroscience and Neural EngineeringNeurological disorders and treatmentsNeural dynamics and brain function

Electrical stimulation of neural tissue to evoke behavioral responses

Tehovnik, Edward J.·1996·Journal of Neuroscience Methods

Abstract

This review yields numerous conclusions. (1) Both unit recording and behavioral studies find that current activates neurons (i.e., cell bodies and axons) directly according to the square of the distance between the electrode and the neuron, and that the excitability of neurons can vary between 100 and 4000 microA/mm2 using a 0.2-ms cathodal pulse duration. (2) Currents as low as 10 microA, which is considered within the range of currents typically used during micro-stimulation, activate from a few tenths to several thousands of cell bodies in the cat motor cortex directly depending on their excitability; this indicates that even low currents activate more than a few neurons. (3) Electrode tip size has no effect on the current density--or effect current spread--at far field, but tip size limits the current-density generated at near field. (4) To minimize neuronal damage, the electrode should be discharged after each pulse and the pulse duration should not exceed the chronaxie of the stimulated tissue. (5) The amount of current needed to evoke behavioral responses depends not only on the excitability of the stimulated substrate but also on the type of behavior being studied.

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Crossref · 10.1016/0165-0270(95)00131-x

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153 of 153 references verified0 citation errors · 0 not checkable

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  • Stimulation levels of 10-20 μA biphasic current pulses of 300 μs duration at 200 Hz are thought to directly activate neurons within an approximately 100 μm radius of the electrode tip, but indirect activation of neural elements may increase this spread.

    “These levels are thought to directly activate neurons within an approximately 100 µm radius of the electrode tip46, but indirect activation of neural elements may increase this spread47.”

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Authors
Tehovnik, E. J.
Affiliations
Massachusetts Institute of Technology (US)
Corresponding author
Tehovnik, Edward J.
Venue
Journal of Neuroscience Methods
Publisher
Elsevier BV
Published
1996-03
Volume
65
Issue
1
Pages
1-17
ISSN
0165-0270 (ISSN-L)
OpenAlex
W2130271501
Cited by
478
References
153
Citations by year
2026: 14 · 2025: 9 · 2024: 12 · 2023: 14 · 2022: 15 · 2021: 19 · 2020: 8 · 2019: 10 · 2018: 16 · 2017: 17 · 2016: 17 · 2015: 27 · 2014: 27 · 2013: 27 · 2012: 18
FWCI
0.85
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Neuroscience Methods (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Eye Institute (R01EY008502, EY-08502)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neural Engineering
  • Health Sciences › Medicine › Neurology › Neurological disorders and treatments
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
Keywords
electrical stimulation, nervous tissue, microstimulation, current density, neuronal excitability, current spread, electrode discharge, chronaxie, motor cortex, behavioral responses, cats
MeSH terms
Animals, Behavior, Behavior, Animal, Cats, Electric Stimulation, Humans, Nerve Tissue

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