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Voltage clamp studies of a transient outward membrane current in gastropod neural somata

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Connor, J. A., Stevens, C. F.·1971·The Journal of Physiology

Abstract

1. Outward directed membrane currents have been studied in voltage clamp experiments on isolated neural somata of the marine gastropod Anisodoris. 2. Stepping the membrane potential from a hyperpolarized level to a value in the neighbourhood of resting potential (−35 to −50 mV at 5° C) results in an outward current transient, IA, which is apparently carried by potassium ions. 3. The peak amplitude of IA is dependent upon both the holding voltage level and the test step voltage while the time courses of development and decay are independent of, or only slightly dependent on, these parameters. 4. The developing and decaying phases of IA are approximated by exponentials, leading to time constants for development of 10–25 msec and for decay of 220–600 msec over the aggregate of cells studied (data at 5° C). Q10 for the processes is approximately 3. 5. It is concluded that the transport mechanism for IA is at least operationally distinct from the mechanism underlying delayed outward current, IK.

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Metadata

Authors
Connor, J. A., & Stevens, C. F.
Venue
The Journal of Physiology
Publisher
Wiley
Published
1971-02
Volume
213
Issue
1
Pages
21-30
ISSN
  • 0022-3751 (ISSN-L)
  • 1469-7793
OpenAlex
W2100548210
Cited by
1,095
References
0
FWCI
4.52
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Voltage clamp studies of a transient outward membrane current in gastropod neural somata. https://app.cochat.ai/papers/10.1113/jphysiol.1971.sp009365
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Connor, J. A., & Stevens, C. F. (1971). Voltage clamp studies of a transient outward membrane current in gastropod neural somata. The Journal of Physiology. https://doi.org/10.1113/jphysiol.1971.sp009365

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.