Visual wulst influences on flash evoked responses in the ectostriatum of the zebra finch

Engelage J, Bischof H-J (1994)
Brain Research 652(1): 17-27.

Download
OA
Zeitschriftenaufsatz | Veröffentlicht | Englisch
Autor
;
Abstract / Bemerkung
Anatomical data suggest that visual information from the thalamofugal pathway contributes to visual processing in the tectofugal pathway. We addressed the question of the functionality of anatomically described connections to the visual system of a laterally eyed bird, the zebra finch. The study shows the contribution of visual wulst efferents to visual processing in the ectostriatum by recordings of visually evoked slow field potentials. Suppression of visual wulst activity resulted in a selective reduction of distinct potential components in contralaterally evoked slow field potentials. A clear reduction was observed in the maximum amplitude of short latency components in the negative wave. Long latency components of the negative wave and the entire positive wave of the contralaterally flash evoked potentials were almost abolished. Ipsilateral visual evoked potentials (VEPs) were not significantly affected. Cooling and spreading depression of the optic tectum resulted in a uniform amplitude reduction of the negative wave. The positive wave was almost abolished. Ipsilateral VEPs disappeared completely during suppression of optic tectum activity. The results showed that the visual wulst has a significant, most likely facilitatory, influence on the processing of contralateral visual information in the ectostriatum. Ipsilateral stimulus processing was partly independent from visual wulst activity. A model for thalamo- and tectofugal connectivity in the ectostriatum is suggested.
Erscheinungsjahr
Zeitschriftentitel
Brain Research
Band
652
Zeitschriftennummer
1
Seite
17-27
ISSN
PUB-ID

Zitieren

Engelage J, Bischof H-J. Visual wulst influences on flash evoked responses in the ectostriatum of the zebra finch. Brain Research. 1994;652(1):17-27.
Engelage, J., & Bischof, H. - J. (1994). Visual wulst influences on flash evoked responses in the ectostriatum of the zebra finch. Brain Research, 652(1), 17-27. doi:10.1016/0006-8993(94)90312-3
Engelage, J., and Bischof, H. - J. (1994). Visual wulst influences on flash evoked responses in the ectostriatum of the zebra finch. Brain Research 652, 17-27.
Engelage, J., & Bischof, H.-J., 1994. Visual wulst influences on flash evoked responses in the ectostriatum of the zebra finch. Brain Research, 652(1), p 17-27.
J. Engelage and H.-J. Bischof, “Visual wulst influences on flash evoked responses in the ectostriatum of the zebra finch”, Brain Research, vol. 652, 1994, pp. 17-27.
Engelage, J., Bischof, H.-J.: Visual wulst influences on flash evoked responses in the ectostriatum of the zebra finch. Brain Research. 652, 17-27 (1994).
Engelage, Jürgen, and Bischof, Hans-Joachim. “Visual wulst influences on flash evoked responses in the ectostriatum of the zebra finch”. Brain Research 652.1 (1994): 17-27.
Alle Dateien verfügbar unter der/den folgenden Lizenz(en):
Copyright Statement:
This Item is protected by copyright and/or related rights. [...]
Volltext(e)
Access Level
OA Open Access
Zuletzt Hochgeladen
2016-09-14T06:07:42Z

Export

Markieren/ Markierung löschen
Markierte Publikationen

Open Data PUB

Web of Science

Dieser Datensatz im Web of Science®

Quellen

PMID: 7953718
PubMed | Europe PMC

Suchen in

Google Scholar