Table of Contents

Giorgio Ascoli, Editor

NeSys Neural Systems and Graphics Computing Laboratory

The movies presented here accompany the illustrations in Chapter 10 by T.B. Leergaard and J.G. Bjaalie. They supplement information available on http://www.nesys.uio.no/ . This website contains information about our activities related to computational neuroanatomy, computerized 3-D reconstruction, databasing, and investigations of sensory map transformations in somatosensory cerebro-cerebellar systems and ascending auditory pathways.

Movie sequences (mpeg) of 3-D reconstructions: All sequences show the brain stem from ventral, followed by a 360 degree clockwise rotation. Use the "pause" facility of your viewer to allow closer inspection of the reconstructions.

| Sequence1: 3-D reconstruction of the rat brain stem and cerebellum. The outer surface of the brain stem is represented as a transparent surface, and the outer boundaries of the cerebellum, pontine nuclei (yellow), and trigeminal sensory nuclei (green) are represented as solid surfaces. See also Fig. 3, Chapter 10.
| Sequence2: 3-D reconstruction of the pontine nuclei, showing the distribution of pontocerebellar cells projecting to the cerebellar hemispheres in rat. The outer surface of the pontine nuclei is represented as a transparent surface, green dots represent pontine cells labeled after tracer implantation in the crown of crusI, and red dots represent pontine cells labeled after tracer implantation in the crown of crusIIa. The tracer implantation sites are shown in Fig. 4D, Chapter 10.
| Sequence3: 3-D reconstruction of the trigeminal sensory nuclei, showing the distribution of pontocerebellar cells projecting to the cerebellar hemispheres in rat. The outer surface of the trigeminal nuclei is represented as a transparent surface, red dots represent trigeminal cells labeled after tracer implantation in the crown of crusIIa. The tracer implantation site is shown in Fig. 4D, Chapter 10.
| Sequence4: 3-D reconstruction of the right pontine nuclei, showing the distribution topography of pontine terminal fields arising in the rat SI whisker barrel field. The outer surface of the right pontine nuclei is shown as a transparent surface, blue and red dots show the distribution of fibers labeled with different axonal tracers injected into electrophysiologically defined individual whisker representations in SI. The clusters of blue dots surround the clusters of red dots externally. See also Fig. 6A, Chapter 10.
| Sequence5: 3-D reconstruction of the right pontine nuclei, showing the distribution topography of pontine terminal fields arising in the rat SI whisker barrel field. Same case as shown above. The outer boundaries of labeled clusters are here demonstrated by solid surfaces (red and blue). The labeled clusters arising from the same row of SI barrels are located in dual lamellae that are shifted from internal to external. See also Fig. 6A, Chapter 10.