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@INPROCEEDINGS{Ito:155949,
author = {Ito, Junji and Yamane, Yukako and Fujita, Ichiro and
Tamura, Hiroshi and Grün, Sonja},
title = {{L}aminar profile of ongoing and evoked neuronal activities
in the inferior temporal cortex of macaque monkeys},
reportid = {FZJ-2014-04872},
year = {2014},
abstract = {To elucidate the laminar organization of ongoing neural
activities and its functional relevance in visual object
recognition, we examined spatio-temporal patterns of local
field potentials (LFPs) recorded from the inferior temporal
cortex of analgesized macaque monkeys using linear electrode
arrays (32 probes spanning 1.55 or 3.1 mm). During the
recordings the animals were presented with 128 visual
objects (shapes, gratings, faces, fruits, etc.) on a gray
background. Stimulus duration was 0.5 s with an
inter-stimulus interval (ISI) of 1 s. We found that during
the ISIs the LFPs showed strong oscillatory fluctuations in
the alpha-beta frequency band (10 – 20 Hz). These
oscillations had the strongest power at the lowermost
probes, supposedly located in the infra-granular layers.
These LFP oscillations were considerably suppressed during
the stimulus presentation period. In the initial ~0.2 s of
the stimulus presentation the LFPs showed a stimulus-evoked
excitatory modulation that first occurred in deep layers and
then propagated to the superficial layers. The
spatio-temporal patterns of the modulation were specific to
the presented stimulus. We will discuss the functional
implications on the laminar organization of our observations
in respect to ongoing and evoked activities and the
suppression of ongoing fluctuations by stimulation.},
month = {Aug},
date = {2014-08-24},
organization = {37th European Conference on Visual
Perception, Belgrade (Serbia), 24 Aug
2014 - 28 Aug 2014},
subtyp = {After Call},
cin = {INM-6 / IAS-6},
cid = {I:(DE-Juel1)INM-6-20090406 / I:(DE-Juel1)IAS-6-20130828},
pnm = {331 - Signalling Pathways and Mechanisms in the Nervous
System (POF2-331) / AVis - Einfluss von top-down Signalen
auf den autonomen Sehvorgang - Multi-skalen Analyse von
massiv-parallelen Multi-Area-Daten des visuellen Pfades
(BMBF-01GQ1114) / 89571 - Connectivity and Activity
(POF2-89571)},
pid = {G:(DE-HGF)POF2-331 / G:(DE-Juel1)BMBF-01GQ1114 /
G:(DE-HGF)POF2-89571},
typ = {PUB:(DE-HGF)24},
url = {https://juser.fz-juelich.de/record/155949},
}