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Sensitivity to interstimulus interval due to calcium interactions in the Purkinje cell spines
2002 (English)In: Neurocomputing, ISSN 0925-2312, E-ISSN 1872-8286, Vol. 44, 13-18 p.Article in journal (Refereed) Published
Abstract [en]

Pairing specific LTD (PSD) is produced by paired parallel fiber (PF) and climbing fiber (CF) stimulation and requires Ca2+ elevation. CF or PF activation cause Ca2+ increase through voltage dependent channels and IP3 induced Ca2+ release, respectively. We developed a model of Ca2+ dynamics in Purkinje cell spines to investigate why paired PF-CF activation is necessary for PSD. Simulations show a supralinear increase of the Ca2+ signal if the CF input occurs in a restricted time interval following the PF input. Ca2- buffers significantly contribute to this phenomenon. This mechanism may be involved in the requirement of temporal specificity in classical conditioning.

Place, publisher, year, edition, pages
2002. Vol. 44, 13-18 p.
Keyword [en]
classical conditioning, Purkinje cells, IP3 induced Ca2+ release, Ca2+ buffers, LTD, long-term depression, neurons, ca2+, insp(3), release, rabbit
Identifiers
URN: urn:nbn:se:kth:diva-21717ISI: 000176839200004OAI: oai:DiVA.org:kth-21717DiVA: diva2:340415
Note
QC 20100525Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2017-12-12Bibliographically approved

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Hellgren Kotaleski, Jeanette

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