The studies described here use functional magnetic resonance imaging
to test whether common or distinct cognitive and/or neural mechanisms
are involved in extracting object structure from the different image
cues defining an object's shape, such as contours, shading, and monocular
depth cues. We found overlapping activations in the lateral and ventral
occipital cortex known as the lateral occipital complex (LOC) for
objects defined by different visual cues (e.g., grayscale photographs
and line drawings) when each was compared with its own scrambled-object
control. In a second experiment we found a reduced response when
objects were repeated, independent of whether they appeared in the
same or a different format (i.e., grayscale images vs line drawings).
A third experiment showed that activation in the LOC was no stronger
for three-dimensional shapes defined by contours or monocular depth
cues, such as occlusion, than for two-dimensional shapes, suggesting
that these regions are not selectively involved in processing three-dimensional
shape information. These results suggest that common regions in the
LOC are involved in extracting and/or representing information about
object structure from different image cues.
%0 Journal Article
%1 Kourtzi2000a
%A Kourtzi, Z.
%A Kanwisher, N.
%D 2000
%J Journal of Neuroscience
%K Brain Cortex Cues; Form Humans; Imaging; Magnetic Mapping; Perception; Photic Resonance Stimulation; Visual
%N 9
%P 3310--3318
%T Cortical regions involved in perceiving object shape.
%U http://www.jneurosci.org/cgi/content/full/20/9/3310
%V 20
%X The studies described here use functional magnetic resonance imaging
to test whether common or distinct cognitive and/or neural mechanisms
are involved in extracting object structure from the different image
cues defining an object's shape, such as contours, shading, and monocular
depth cues. We found overlapping activations in the lateral and ventral
occipital cortex known as the lateral occipital complex (LOC) for
objects defined by different visual cues (e.g., grayscale photographs
and line drawings) when each was compared with its own scrambled-object
control. In a second experiment we found a reduced response when
objects were repeated, independent of whether they appeared in the
same or a different format (i.e., grayscale images vs line drawings).
A third experiment showed that activation in the LOC was no stronger
for three-dimensional shapes defined by contours or monocular depth
cues, such as occlusion, than for two-dimensional shapes, suggesting
that these regions are not selectively involved in processing three-dimensional
shape information. These results suggest that common regions in the
LOC are involved in extracting and/or representing information about
object structure from different image cues.
@article{Kourtzi2000a,
abstract = {The studies described here use functional magnetic resonance imaging
to test whether common or distinct cognitive and/or neural mechanisms
are involved in extracting object structure from the different image
cues defining an object's shape, such as contours, shading, and monocular
depth cues. We found overlapping activations in the lateral and ventral
occipital cortex [known as the lateral occipital complex (LOC)] for
objects defined by different visual cues (e.g., grayscale photographs
and line drawings) when each was compared with its own scrambled-object
control. In a second experiment we found a reduced response when
objects were repeated, independent of whether they appeared in the
same or a different format (i.e., grayscale images vs line drawings).
A third experiment showed that activation in the LOC was no stronger
for three-dimensional shapes defined by contours or monocular depth
cues, such as occlusion, than for two-dimensional shapes, suggesting
that these regions are not selectively involved in processing three-dimensional
shape information. These results suggest that common regions in the
LOC are involved in extracting and/or representing information about
object structure from different image cues.},
added-at = {2007-12-16T20:00:22.000+0100},
author = {Kourtzi, Z. and Kanwisher, N.},
biburl = {https://www.bibsonomy.org/bibtex/21e9a06fac2fd1b279f50d8605482bb50/perceptron},
interhash = {b67c38719593a114f3b05e3df1d11075},
intrahash = {1e9a06fac2fd1b279f50d8605482bb50},
journal = {Journal of Neuroscience},
keywords = {Brain Cortex Cues; Form Humans; Imaging; Magnetic Mapping; Perception; Photic Resonance Stimulation; Visual},
number = 9,
pages = {3310--3318},
pmid = {10777794},
timestamp = {2007-12-16T20:00:24.000+0100},
title = {Cortical regions involved in perceiving object shape.},
url = {http://www.jneurosci.org/cgi/content/full/20/9/3310},
volume = 20,
year = 2000
}