ea 7 and the supramarginal area 40.
3 - rostral postcentral (area postcentralis oralis). Located
primarily in the rostral portion of the postcentral gyrus including
the caudal bank of the central sulcus. At either end of the sulcus
it can extend beyond the depth of the sulcus into the precentral
gyrus. Cytoarchitecturally bounded rostrally by the
gigantopyramidal area 4 and caudally by the intermediate
postcentral area 1.
4 - gigantopyramidal (area gigantopyramidalis). Located in the
precentral gyrus. Cytoarchitecturally the caudal boundary with the
rostral postcentral area 3 does not coincide precisely with the
floor of the central sulcus but lies variably in the banks of the
postcentral gyrus and the precentral gyrus. The area also does not
extend in all cases to the cingulate sulcus medially or to the end
of the central sulcus ventro-laterally. Bounded rostrally by the
frontal agranular area 6.
5 - preparietal (area praeparietalis). Occupies the superior
parietal lobule and a portion of the postcentral gyrus,
particularly on the medial aspect of the hemisphere. Bounded
approximately by the cingulate sulcus on the medial aspect of the
hemisphere and by the superior postcentral sulcus on the lateral
aspect. Cytoarchitecturally bounded by the caudal postcentral area
2, the superior parietal area 7 and on the medial bank of the
hemisphere by the gigantopyramidal area 4 and the dorsal posterior
cingulate area 31.
6 - agranular frontal (area frontalis agranularis). Located
primarily in the caudal portions of the superior frontal gyrus and
the middle frontal gyrus and the rostral portions of the precentral
gyrus not occupied by the gigantopyramidal area 4. It extends from
the cingulate sulcus on the medial aspect of the hemisphere to the
lateral sulcus on the lateral aspect. Cytoarchitecturally bounded
rostrally by the frontal region and caudally by the
gigantopyramidal area 4.
7 - superior parietal (area parietalis superior). Occupies much of
the superior parietal lobule and some of the precuneus. Bounded
approximately by the superior postcentral sulcus rostrally, the
intraparietal sulcus laterally, the parieto-occipital sulcus
caudally and, on the medial bank of the hemisphere, the subparietal
sulcus. Cytoarchitecturally bounded rostrally by the preparietal
area 5 and the caudal postcentral area 2; caudally by the
peristriate area 19; and medially by the dorsal posterior cingulate
area 31.
8 - intermediate frontal (area frontalis intermedia). Located
primarily in the superior frontal gyrus extending from the
cingulate sulcus on the medial surface over the margin of the
hemisphere to the middle frontal gyrus. Cytoarchitecturally bounded
caudally by the agranular frontal area 6 and ventrally by the
granular frontal area 9.
9 - granular frontal (area frontalis granularis). Occupies portions
of the superior frontal gyrus and the middle frontal gyrus. Its
approximate boundary on the medial aspect of the hemisphere is the
cingulate sulcus and, on the lateral aspect, the inferior frontal
sulcus. Cytoarchitecturally bounded dorsocaudally by the
intermediate frontal area 8, caudally by the agranular frontal area
6, and ventrally by the frontopolar area 10, the middle frontal
area 46 and the opercular area 44.
10 - frontopolar (area frontopolaris). Occupies the most rostral
portions of the superior frontal gyrus and the middle frontal
gyrus. On the medial aspect of the hemisphere it is bounded
ventrally by the superior rostral sulcus. It does not extend as far
as the cingulate sulcus. Cytoarchitecturally bounded dorsally by
the granular frontal area 9, caudally by the middle frontal area
46, and ventrally by the orbital area 47 and by the frontopolar
area 12.
11 - prefrontal (area praefrontalis). Constitutes most of the
orbital gyri, gyrus rectus and the most rostral portion of the
superior frontal gyrus. Bounded medially by the inferior rostral
sulcus and laterally approximately by the frontomarginal sulcus.
Cytoarchitecturally bounded on the rostral and lateral aspects of
the hemisphere by the frontopolar area 10, the orbital area 47, and
the triangular area 45; on the medial surface it is bounded
dorsally by the area 12 and caudally by the subgenual area
25.
12 - prefrontal (area praefrontalis). Occupies the area between the
superior rostral sulcus and the inferior rostral sulcus.
Cytoarchitecturally bounded dorsally by the frontopolar area 10 and
the dorsal anterior cingulate area 32; caudally, ventrally and
rostrally it is bounded by the prefrontal area 11. (Originally
described as part of prefrontal area 11 but not shown in the map,
subsequently it was labeled as an independent area 12.)
17 - striate (area striata). Part of the occipital lobe of the
cerebral cortex that is defined on the basis of cyto- and
myeloarchitecture, primarily by the band/stripe of Gennari.
18 - parastriate (area parastriata). Located in parts of the
cuneus, the lingual gyrus and the lateral occipital gyrus of the
occipital lobe. Cytoarchitecturally bounded on on
e side by
the striate area 17, from which it is distinguished by absence of a
band/stripe of Gennari, and on the other by the peristriate area
19.
19 - peristriate (area peristriata). Located in parts of the
lingual gyrus, the cuneus, the lateral occipital gyrus and the
superior occipital gyrus of the occipital lobe where it is bounded
approximately by the parieto-occipital sulcus. Cytoarchitecturally
bounded on on
e side by the parastriate area 18 which it
surrounds. Rostrally it is bounded by the angular area 39 and the
occipitotemporal area 37.
20 - inferior temporal (area temporalis inferior). Corresponds
approximately to the inferior temporal gyrus. Cytoarchitecturally
bounded medially by the ectorhinal area 36, laterally by the middle
temporal area 21, rostrally by the temporopolar area 38 and
caudally by the occipitotemporal area 37.
21 - middle temporal (area temporalis media). Corresponds
approximately to the middle temporal gyrus. Bounded rostrally by
the temporopolar area 38, ventrally by the inferior temporal area
20, caudally by the occipitotemporal area 37, and dorsally by the
superior temporal area 22.
22 - superior temporal (area temporalis superior). Corresponds
approximately to the lateral and caudal two thirds of the superior
temporal gyrus. Bounded rostrally by the temporopolar area 38,
medially by the posterior transverse temporal area 42,
ventrocaudally by the middle temporal area 21 and dorsocaudally by
the supramarginal area 39.
23 - ventral posterior cingulate (area cingularis posterior
ventralis). Occupies most of the posterior cingulate gyrus adjacent
to the corpus callosum. At the caudal extreme it is bounded
approximately by the parieto-occipital sulcus. Cytoarchitecturally
bounded dorsally by the dorsal posterior cingulate area 31,
rostrally by the ventral anterior cingulate area 24, and
ventrorostrally in its caudal half by the retrosplenial
region.
24 - ventral anterior cingulate (area cingularis anterior
ventralis). Occupies most of the anterior cingulate gyrus in an arc
around the genu of corpus callosum. Its outer border corresponds
approximately to the cingulate sulcus. Cytoarchitecturally bounded
internally by the pregenual area 33, externally by the dorsal
anterior cingulate area 32, and caudally by the ventral posterior
cingulate area 23 and the dorsal posterior cingulate area 31.
25 - subgenual (area subgenualis). A narrow band located in the
caudal portion of the subcallosal area adjacent to the paraterminal
gyrus from which it is separated by the posterior parolfactory
sulcus. It is bounded by the prefrontal area 11rostrally and by the
paraterminal gyrus caudally.
26 - ectosplenial (area ectosplenialis). A narrow band located in
the isthmus of cingulate gyrus adjacent to the fasciolar gyrus
internally. It is bounded externally by the granular retrolimbic
area 29.
28 - entorhinal (area entorhinalis). Located in the entorhinal area
on the medial aspect of the temporal lobe. It and the dorsal
entorhinal area 34 together constitute approximately the entorhinal
area.
29 - granular retrolimbic (area retrolimbica granularis). A narrow
band located in the isthmus of cingulate gyrus. Cytoarchitecturally
bounded internally by the ectosplenial area 26 and externally by
the agranular retrolimbic area 30.
30 - agranular retrolimbic (area retrolimbica agranularis). Located
in the isthmus of cingulate gyrus. Cytoarchitecturally bounded
internally by the granular retrolimbic area 29, dorsally by the
ventral posterior cingulate area 23 and ventrolaterally by the
ectorhinal area 36.
31 - dorsal posterior cingulate (area cingularis posterior
dorsalis). Occupies portions of the posterior cingulate gyrus and
medial aspect of the parietal lobe. Approximate boundaries are the
cingulate sulcus dorsally and the parieto-occipital sulcus
caudally. It partially surrounds the subparietal sulcus.
Cytoarchitecturally bounded rostrally by the ventral anterior
cingulate area 24, ventrally by the ventral posterior cingulate
area 23, dorsally by the gigantopyramidal area 4 and preparietal
area 5 and caudally by the superior parietal area 7.
32 - dorsal anterior cingulate (area cingularis anterior dorsalis).
Forms an outer arc around the anterior cingulate gyrus. The
cingulate sulcus defines approximately its inner boundary and the
superior rostral sulcus its ventral boundary; rostrally it extends
almost to the margin of the frontal lobe. Cytoarchitecturally
bounded internally by the ventral anterior cingulate area 24,
externally by medial margins of the agranular frontal area 6,
intermediate frontal area 8, granular frontal area 9, frontopolar
area 10, and prefrontal area 11.
33 - pregenual (area praegenualis). A narrow band located in the
anterior cingulate gyrus adjacent to the supracallosal gyrus in the
depth of the callosal sulcus. Cytoarchitecturally bounded by the
ventral anterior cingulate area 24 and the supracallosal
gyrus.
34 - dorsal entorhinal (area entorhinalis dorsalis). Located in the
entorhinal area on the medial aspect of the temporal lobe. It and
the entorhinal area 28 together constitute approximately the
entorhinal area.
35 - perirhinal (area perirhinalis). Located along the rhinal
sulcus. Cytoarchitectually bounded medially by the entorhinal area
28 and laterally by the ectorhinal area 36.
36 - ectorhinal (area ectorhinalis). Located primarily in the
fusiform gyrus, with its medial boundary corresponding
approximately to the rhinal sulcus. Cytoarchitecturally bounded
laterally and caudally by the inferior temporal area 20, medially
by the perirhinal area 35 and rostrally by the temporopolar area
38.
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