ORCID: https://orcid.org/0000-0002-4424-2197; Nauhaus, Ian; Benucci, Andrea; Bonin, Vincent; Ringach, Dario L. und Caradini, Matteo
(2007):
Local Origin of Field Potentials in Visual Cortex.
In: Neuron, Bd. 61, Nr. 1: S. 35-41
Abstract
The local field potential (LFP) is increasingly used to measure the combined activity of neurons within a region of tissue. Yet, available estimates of the size of this region are highly disparate, ranging from several hundred microns to a few millimeters. To measure the size of this region directly, we used a combination of multielectrode recordings and optical imaging. We determined the orientation selectivity of stimulus-evoked LFP signals in primary visual cortex and were able to predict it on the basis of the surrounding map of orientation preference. The results show that >95% of the LFP signal originates within 250 μm of the recording electrode. This quantitative estimate indicates that LFPs are more local than often recognized and provides a guide to the interpretation of the increasing number of studies that rest on LFP recordings.
Dokumententyp: | Zeitschriftenartikel |
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Fakultät: | Biologie > Department Biologie II > Neurobiologie |
Themengebiete: | 500 Naturwissenschaften und Mathematik > 570 Biowissenschaften; Biologie |
ISSN: | 1097-4199 |
Sprache: | Englisch |
Dokumenten ID: | 61262 |
Datum der Veröffentlichung auf Open Access LMU: | 15. Mrz. 2019, 10:49 |
Letzte Änderungen: | 04. Nov. 2020, 13:39 |