Neuroscience 2004 Abstract
| Presentation Number: | 650.11 |
|---|---|
| Abstract Title: | Architectonic areas of the monkey's superior temporal gyrus transposed to MRI scans. |
| Authors: |
Munoz, M.*1
; Saunders, R. C.1
; Mishkin, M.1
1Lab Neuropsychol, NIMH, NIH, Bethesda, MD |
| Primary Theme and Topics |
Cognition and Behavior - Neuroethology -- Auditory; Perception |
| Secondary Theme and Topics | Cognition and Behavior<br />- Human and Animal Cognition and Behavior<br />-- Cognitive learning and memory systems |
| Session: |
650. Auditory Cortex III Poster |
| Presentation Time: | Tuesday, October 26, 2004 10:00 AM-11:00 AM |
| Location: | San Diego Convention Center - Hall A-H, Board # BB18 |
| Keywords: | primate, auditory, superior temporal gyrus, magnetic resonance imaging |
Metabolic mapping studies in monkeys demonstrate that auditory inputs are processed throughout the entire superior temporal gyrus (STG), much of which remains unexplored except by anatomical methods. Establishing functional subdivisions within this unexplored territory might be facilitated by relating the targets of functional studies - lesion, single-unit recording, neuroimaging, etc. - to known architectonic divisions, particularly if these could be estimated in advance on MRI scans with the aid of anatomical landmarks. To provide such correlative evidence, we prepared three brains for architectonic analysis by sectioning each one in the coronal plane and staining adjacent series with thionin, myelin, acetylcholinesterase, cytochrome oxidase, and parvalbumin. We confirmed many of the subdivisions established by Seltzer and Pandya (1978), including areas TAa, TPO, PGa, IPa, and Ts1-3. The latter areas, however, did not appear to extend into the adjacent ventral bank of the lateral sulcus, an architectonic area we have relabeled as rSTP (rostral supratemporal plane). Also, we relabeled the caudal portion of Ts3, located lateral to the auditory belt, as area Ts4. Finally, in the area of the temporal pole, we relabeled area Pro as areas 36pl and 36pm. Once the boundaries between areas were delineated on the histological sections, we transposed them onto MRI scans by correlating the architectonic boundaries with anatomical landmarks identifiable on MRI scans, such as rostral tip of the superior temporal sulcus, uncus of the hippocampus, hippocampus itself, rostral and caudal limits of the insula, anterior commissure, splenium of the corpus callosum, etc. This study provides an anatomical framework for functional studies of the STG in monkeys. Supported by IRP/NIMH/NIH/DHHS.
Sample Citation:
[Authors]. [Abstract Title]. Program No. XXX.XX. 2004 Neuroscience Meeting Planner. San Diego, CA: Society for Neuroscience, 2004. Online.
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