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Q: periarcuate cortex in primates (and other species ?)

Mark Laubach laubach at gte.net
Mon Feb 3 10:18:57 EST 1997

In an old article in the Cerebral Cortex series, Pandya and Yeterian
discussed the connections and possible functions of the periarcuate
area of the primate frontal cortex.  They mentioned that the dosal
periarcuate area receives projections from what they call primary
associative cortex for the auditory and somatosensory modalities and
the ventral portion of this area receives projections from primary
associative cortex for the visual and somatosensory modalities.  These
comments are based on studies done by Jones and Powell (1970) and by
Pandya's group in the 1960s and 70s.  

Can anyone point out some more recent work on these connections using
modern methods for tract-tracing?

Also, P and Y did not mention if these regions are interconnected with
any motor cortical areas, such as the premotor cortex (area 6).  Have
any studies examined these connections?

Finally, is periarcuate cortex homologous to any region of the frontal
cortex in new world primates?  What about lower species, e.g., rat?

Thanks in advance for any information.

-Mark Laubach

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