Directional sensitivity of dendritic calcium responses to wind stimuli in the cricket giant interneuron

Hiroto Ogawa, Yoshichika Baba, Kotaro Oka

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

We examined directional sensitivities in the dendritic activity of the identified giant interneurons (GIs) in the cricket, using in vivo Ca 2+ imaging during different directional air-current stimuli. Air current stimulus evoked action potential burst and quick Ca2+ increase in GI. The stimulus direction of the maximal Ca2+ responses corresponded to that of the maximal voltage response. However, the shapes of the directional tuning curves based on the Ca2+ responses for each dendritic branch were different from the overall tuning curve based on spike counts for the cell. Moreover, different dendritic branches displayed distinct directional sensitivity profiles to the air-current stimuli. We propose that postsynaptic activities will influence the local Ca2+ signals in the distal dendrites, and produce the difference in directional sensitivity of the dendritic Ca2+ response.

Original languageEnglish
Pages (from-to)185-188
Number of pages4
JournalNeuroscience Letters
Volume358
Issue number3
DOIs
Publication statusPublished - 2004 Apr 1

Fingerprint

Gryllidae
Interneurons
Air
Calcium
Dendrites
Evoked Potentials
Action Potentials
Cell Count

Keywords

  • Air current stimulus
  • Ca imaging
  • Cricket
  • Dendritic activity
  • Directional sensitivity
  • Giant interneuron
  • Oregon Green 488 BAPTA-1
  • Voltage-dependent calcium channel

ASJC Scopus subject areas

  • Neuroscience(all)

Cite this

Directional sensitivity of dendritic calcium responses to wind stimuli in the cricket giant interneuron. / Ogawa, Hiroto; Baba, Yoshichika; Oka, Kotaro.

In: Neuroscience Letters, Vol. 358, No. 3, 01.04.2004, p. 185-188.

Research output: Contribution to journalArticle

@article{d615121db0234faf8b7bec0306a3696d,
title = "Directional sensitivity of dendritic calcium responses to wind stimuli in the cricket giant interneuron",
abstract = "We examined directional sensitivities in the dendritic activity of the identified giant interneurons (GIs) in the cricket, using in vivo Ca 2+ imaging during different directional air-current stimuli. Air current stimulus evoked action potential burst and quick Ca2+ increase in GI. The stimulus direction of the maximal Ca2+ responses corresponded to that of the maximal voltage response. However, the shapes of the directional tuning curves based on the Ca2+ responses for each dendritic branch were different from the overall tuning curve based on spike counts for the cell. Moreover, different dendritic branches displayed distinct directional sensitivity profiles to the air-current stimuli. We propose that postsynaptic activities will influence the local Ca2+ signals in the distal dendrites, and produce the difference in directional sensitivity of the dendritic Ca2+ response.",
keywords = "Air current stimulus, Ca imaging, Cricket, Dendritic activity, Directional sensitivity, Giant interneuron, Oregon Green 488 BAPTA-1, Voltage-dependent calcium channel",
author = "Hiroto Ogawa and Yoshichika Baba and Kotaro Oka",
year = "2004",
month = "4",
day = "1",
doi = "10.1016/j.neulet.2004.01.023",
language = "English",
volume = "358",
pages = "185--188",
journal = "Neuroscience Letters",
issn = "0304-3940",
publisher = "Elsevier Ireland Ltd",
number = "3",

}

TY - JOUR

T1 - Directional sensitivity of dendritic calcium responses to wind stimuli in the cricket giant interneuron

AU - Ogawa, Hiroto

AU - Baba, Yoshichika

AU - Oka, Kotaro

PY - 2004/4/1

Y1 - 2004/4/1

N2 - We examined directional sensitivities in the dendritic activity of the identified giant interneurons (GIs) in the cricket, using in vivo Ca 2+ imaging during different directional air-current stimuli. Air current stimulus evoked action potential burst and quick Ca2+ increase in GI. The stimulus direction of the maximal Ca2+ responses corresponded to that of the maximal voltage response. However, the shapes of the directional tuning curves based on the Ca2+ responses for each dendritic branch were different from the overall tuning curve based on spike counts for the cell. Moreover, different dendritic branches displayed distinct directional sensitivity profiles to the air-current stimuli. We propose that postsynaptic activities will influence the local Ca2+ signals in the distal dendrites, and produce the difference in directional sensitivity of the dendritic Ca2+ response.

AB - We examined directional sensitivities in the dendritic activity of the identified giant interneurons (GIs) in the cricket, using in vivo Ca 2+ imaging during different directional air-current stimuli. Air current stimulus evoked action potential burst and quick Ca2+ increase in GI. The stimulus direction of the maximal Ca2+ responses corresponded to that of the maximal voltage response. However, the shapes of the directional tuning curves based on the Ca2+ responses for each dendritic branch were different from the overall tuning curve based on spike counts for the cell. Moreover, different dendritic branches displayed distinct directional sensitivity profiles to the air-current stimuli. We propose that postsynaptic activities will influence the local Ca2+ signals in the distal dendrites, and produce the difference in directional sensitivity of the dendritic Ca2+ response.

KW - Air current stimulus

KW - Ca imaging

KW - Cricket

KW - Dendritic activity

KW - Directional sensitivity

KW - Giant interneuron

KW - Oregon Green 488 BAPTA-1

KW - Voltage-dependent calcium channel

UR - http://www.scopus.com/inward/record.url?scp=1642412793&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=1642412793&partnerID=8YFLogxK

U2 - 10.1016/j.neulet.2004.01.023

DO - 10.1016/j.neulet.2004.01.023

M3 - Article

VL - 358

SP - 185

EP - 188

JO - Neuroscience Letters

JF - Neuroscience Letters

SN - 0304-3940

IS - 3

ER -