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Titolo:
BAND-PASS FILTERING BY VOLTAGE-DEPENDENT MEMBRANE IN AN INSECT PHOTORECEPTOR
Autore:
JUUSOLA M; WECKSTROM M;
Indirizzi:
UNIV OULU,DEPT PHYSIOL,KAJAANINTIE 52A SF-90220 OULU FINLAND
Titolo Testata:
Neuroscience letters
fascicolo: 1-2, volume: 154, anno: 1993,
pagine: 84 - 88
SICI:
0304-3940(1993)154:1-2<84:BFBVMI>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
NONSPIKING LOCAL INTERNEURONS; SINGLE MICROELECTRODE; POTASSIUM CHANNELS; ADAPTATION; RETINA;
Keywords:
POTASSIUM CHANNEL; VOLTAGE-DEPENDENT CONDUCTANCE; WHITE NOISE; SINGLE ELECTRODE CLAMP; FREQUENCY RESPONSE; VISION; LIGHT ADAPTATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
22
Recensione:
Indirizzi per estratti:
Citazione:
M. Juusola e M. Weckstrom, "BAND-PASS FILTERING BY VOLTAGE-DEPENDENT MEMBRANE IN AN INSECT PHOTORECEPTOR", Neuroscience letters, 154(1-2), 1993, pp. 84-88

Abstract

The membrane properties of short type blowfly photoreceptors (R1-6) were investigated in dark and light adaptation with single electrode current and voltage clamp techniques. The impedance of the cells was defined in frequency domain by using discontinuous current clamp and white-noise-modulated current injection. We found that the slow activationand relaxation of the voltage-dependent K+ conductance transform the photoreceptor membrane effectively into a band-pass filter. This behaviour Could be observed under current clamp as voltage-dependent outward and inward rectification of the membrane. The voltage-dependent band-pass filtering is likely to be present in all neurons with graded potentials and voltage-dependent membrane conductances.

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Documento generato il 04/12/20 alle ore 09:53:46