Cited by 201Neural dynamics and brain functionNeuroscience and Neuropharmacology ResearchMemory and Neural Mechanisms

In vivo intracellular recording and perturbation of persistent activity in a neural integrator

Aksay, E., Gamkrelidze, G., Seung, H. S., Baker, R., Tank, D. W.·2001·Nature Neuroscience

Abstract

To investigate the mechanisms of persistent neural activity, we obtained in vivo intracellular recordings from neurons in an oculomotor neural integrator of the goldfish during spontaneous saccades and fixations. Persistent changes in firing rate following saccades were associated with step changes in interspike membrane potential that were correlated with changes in eye position. Perturbation of persistent activity with brief intracellular current pulses designed to mimic saccadic input only induced transient changes of firing rate and membrane potential. When neurons were hyperpolarized below action potential threshold, position-correlated step changes in membrane potential remained. Membrane potential fluctuations were greater during more depolarized steps. These results suggest that sustained changes in firing rate are supported not by either membrane multistability or changes in pacemaker currents, but rather by persistent changes in the rate or amplitude of synaptic inputs.

Integrity signals

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Crossref · 10.1038/84023

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42 of 42 references verified0 citation errors · 0 not checkable

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  • Within the oculomotor integrator, broad physiological and coarse anatomical evidence implicates recurrent excitatory interactions in generating attractor dynamics.

    “Within the oculomotor integrator, there is broad physiological18–20 and coarse anatomical21 evidence implicating recurrent excitatory interactions in generating attractor dynamics.”

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Authors
Aksay, E., Gamkrelidze, G., Seung, H. S., Baker, R., & Tank, D. W.
Affiliations
  • Alcatel-Lucent (France) (FR)
  • New York University (US)
  • Howard Hughes Medical Institute (US)
Corresponding author
  • Baker, R.
  • Tank, D. W.
Venue
Nature Neuroscience
Published
2001-02
Volume
4
Issue
2
Pages
184-193
ISSN
  • 1097-6256 (ISSN-L)
  • 1546-1726
OpenAlex
W1608745771
Cited by
201
References
42
Citations by year
2026: 4 · 2025: 8 · 2024: 10 · 2023: 4 · 2022: 5 · 2021: 8 · 2020: 6 · 2019: 9 · 2018: 4 · 2017: 8 · 2016: 6 · 2015: 6 · 2014: 8 · 2013: 5 · 2012: 6
FWCI
6.12
Type
journal article
Language
en
Open access
closed
Locations
  • Nature Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
Keywords
persistent activity, neural integrator, oculomotor system, goldfish, saccades, fixation, membrane potential, firing rate, synaptic input, eye position, pacemaker current
MeSH terms
Action Potentials, Animals, Differential Threshold, Electric Stimulation, Fixation, Ocular, Goldfish, Intracellular Membranes, Membrane Potentials, Neurons, Ocular Physiological Phenomena, Oculomotor Muscles, Reaction Time, Saccades

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