The role of Ca2+ channels in the repetitive firing of striatal projection neurons.

Abstract:

:Blockade of L-type Ca2+ channels results in a decrease in firing frequency of neostriatal neurons. In contrast, N- and P/Q-types of Ca2+ channel cooperate to tune firing pattern, since both of these channel types have to be blocked to enhance firing frequency. Parameters of the intensity-frequency plot were differentially modified by Ca2+ channel antagonists: while L-type Ca2+ channel block reduced the dynamic range by about 80%, block of N- and P/Q-types of Ca2+ channel generated a steeper intensity-frequency plot. These effects are explained in terms of the sustained depolarization and the afterhyperpolarizing potential known to be dependent upon L- and N-, P/Q-types of Ca2+ channels, respectively.

journal_name

Neuroreport

journal_title

Neuroreport

authors

Pérez-Garci E,Bargas J,Galarraga E

doi

10.1097/00001756-200307010-00013

subject

Has Abstract

pub_date

2003-07-01 00:00:00

pages

1253-6

issue

9

eissn

0959-4965

issn

1473-558X

journal_volume

14

pub_type

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