Abstract
The second visual cortical area (V2) of the primate is composed of repeating thin, pale, and thick cytochrome oxidase stripes containing primarily color-selective, broadband oriented, and disparity-selective cells, respectively. We have now examined topography in V2 with respect to these functional subdivisions. Our data suggest that there are multiple, interleaved visual maps in V2, one for each of the color, orientation, and disparity domains. The same region of visual space is re-represented by each stripe within a stripe cycle, resulting in discontinuities or 'jumps back' in representation at stripe borders. Adjacent stripe cycles represent adjacent regions of space such that the visual map is continuous from one stripe to the next like stripe. Receptive field size and scatter are significantly larger for thin stripes than for thick stripes. Unexpectedly, our data suggest two types of pale stripes within each stripe cycle, one with scatter similar to thin stripes and another to thick stripes. Some evidence also suggests the presence of multiple maps within individual stripes in V2. Consistent with functional clustering within single stripes (Ts'o et al., 1990b), we have recorded re-representations and topographic discontinuities coincident with functional borders within single stripes. These results suggest that multiple and interleaved mapping may be a common organizational strategy for representing multiple functional domains within a single cortical area.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 3689-3715 |
| Number of pages | 27 |
| Journal | Journal of Neuroscience |
| Volume | 15 |
| Issue number | 5 II |
| State | Published - 1995 |
| Externally published | Yes |
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Keywords
- cortical magnification
- cortical maps
- cytochrome oxidase stripes
- hypercolumn
- optical imaging
- point image
- point set
- topography
- visual area 2
ASJC Scopus subject areas
- Neuroscience(all)
Cite this
Visual topography in primate V2 : Multiple representation across functional stripes. / Roe, Anna; Ts'o, D. Y.
In: Journal of Neuroscience, Vol. 15, No. 5 II, 1995, p. 3689-3715.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Visual topography in primate V2
T2 - Multiple representation across functional stripes
AU - Roe, Anna
AU - Ts'o, D. Y.
PY - 1995
Y1 - 1995
N2 - The second visual cortical area (V2) of the primate is composed of repeating thin, pale, and thick cytochrome oxidase stripes containing primarily color-selective, broadband oriented, and disparity-selective cells, respectively. We have now examined topography in V2 with respect to these functional subdivisions. Our data suggest that there are multiple, interleaved visual maps in V2, one for each of the color, orientation, and disparity domains. The same region of visual space is re-represented by each stripe within a stripe cycle, resulting in discontinuities or 'jumps back' in representation at stripe borders. Adjacent stripe cycles represent adjacent regions of space such that the visual map is continuous from one stripe to the next like stripe. Receptive field size and scatter are significantly larger for thin stripes than for thick stripes. Unexpectedly, our data suggest two types of pale stripes within each stripe cycle, one with scatter similar to thin stripes and another to thick stripes. Some evidence also suggests the presence of multiple maps within individual stripes in V2. Consistent with functional clustering within single stripes (Ts'o et al., 1990b), we have recorded re-representations and topographic discontinuities coincident with functional borders within single stripes. These results suggest that multiple and interleaved mapping may be a common organizational strategy for representing multiple functional domains within a single cortical area.
AB - The second visual cortical area (V2) of the primate is composed of repeating thin, pale, and thick cytochrome oxidase stripes containing primarily color-selective, broadband oriented, and disparity-selective cells, respectively. We have now examined topography in V2 with respect to these functional subdivisions. Our data suggest that there are multiple, interleaved visual maps in V2, one for each of the color, orientation, and disparity domains. The same region of visual space is re-represented by each stripe within a stripe cycle, resulting in discontinuities or 'jumps back' in representation at stripe borders. Adjacent stripe cycles represent adjacent regions of space such that the visual map is continuous from one stripe to the next like stripe. Receptive field size and scatter are significantly larger for thin stripes than for thick stripes. Unexpectedly, our data suggest two types of pale stripes within each stripe cycle, one with scatter similar to thin stripes and another to thick stripes. Some evidence also suggests the presence of multiple maps within individual stripes in V2. Consistent with functional clustering within single stripes (Ts'o et al., 1990b), we have recorded re-representations and topographic discontinuities coincident with functional borders within single stripes. These results suggest that multiple and interleaved mapping may be a common organizational strategy for representing multiple functional domains within a single cortical area.
KW - cortical magnification
KW - cortical maps
KW - cytochrome oxidase stripes
KW - hypercolumn
KW - optical imaging
KW - point image
KW - point set
KW - topography
KW - visual area 2
UR - http://www.scopus.com/inward/record.url?scp=0029058877&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0029058877&partnerID=8YFLogxK
M3 - Article
C2 - 7751939
AN - SCOPUS:0029058877
VL - 15
SP - 3689
EP - 3715
JO - Journal of Neuroscience
JF - Journal of Neuroscience
SN - 0270-6474
IS - 5 II
ER -