Neuroscience 2001 Abstract
| Presentation Number: | 855.7 |
|---|---|
| Abstract Title: | A 3-D ATLAS OF THE BRAIN OF A BOTTLE-NOSE DOLPHIN IN MAGNETIC RESONANCE IMAGES. |
| Authors: |
Johnson, J. I.*1
; Marino, L.2
; Sudheimer, K. D.1
; Rilling, J. K.2
; Davis, K. K.1
; Murphy, T. L.1
; Fobbs, A. J.3
1Michigan State University, East Lansing, MI 2Emory University, Atlanta, GA 3National Museum of Health and Medicine, Armed Forces Institute of Pathology, Washington, DC |
| Primary Theme and Topics |
Cognition and Behavior - Neuroethology |
| Session: |
855. Neuroethology: comparative anatomy and brain evolution Poster |
| Presentation Time: | Wednesday, November 14, 2001 3:00 PM-4:00 PM |
| Location: | Exhibit Hall UU-21 |
| Keywords: | comparative anatomy and brain evolution, dolphin, mammalian, cetacean |
Using magnetic resonance imaging (MRI), one can view the internal structure of the brain where traditional procedures of embedding, sectioning, staining, mounting, and microscopically examining thousands of sections are not practicable. Structures can be analyzed in their precise quantitative spatial interrelationships, which is difficult to do after the distortions often accompanying histological processing. For these reasons, images of the brain of a bottle-nose dolphin Tursiops truncatus were scanned in the coronal plane at 136 antero-posterior levels. From these MRI scans, a 3-dimensional digital model was constructed using the programs VoxelView and VoxelMath (Vital Images, Inc.) This model, wherein details of internal and external morphology are represented in 3-dimensional space, was then resectioned in orthogonal planes to produce correlated series of virtual sections, 122 in the horizontal plane and 176 in the sagittal plane. These MRI sections were compared with stained sections for identification of neuroanatomical structures. Sections in all 3 planes display the sizes and positions of such structures as the corpus callosum, internal capsule, cerebral peduncles and ventricles, certain thalamic nuclear groups, caudate nucleus, putamen, ventral striatum, amygdala, pons, cerebellar cortex and white matter and peduncles, superior colliculus, large inferior colliculi and their brachia, inferior olive, and cerebral cortical sulci and gyri.
Supported by NSF grants IBN 9814911, 9814912, 9812712.
Sample Citation:
[Authors]. [Abstract Title]. Program No. XXX.XX. 2001 Neuroscience Meeting Planner. San Diego, CA: Society for Neuroscience, 2001. Online.
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