Fiber connections of the torus longitudinal is in a teleost. Pdf secondorder projection from the posterior lateral. Fiber connections of the torus longitudinalis in a teleost. The torus semicircularis is a laminated structure in the mesencephalon of fishes, which can be considered as an auditory and lateral line center 17. In zebrafish larva, a coarse spatial frequency organization was. Cyprinus carpio reexamined article in the journal of comparative neurology 4572. Caudal region of the midbrain roof corresponding to the mammalian inferior colliculus.
Zfin expression search results zebrafish information network. Octavolateral projections to the torus semicircularis of. Multitissue structure that is a paired longitudinal eminence of granular cells that develops from the alar plate and is attached to the tegmentum in the medial tectal ventricle. In goldfish, crude tonotopy was reported in the torus semicircularis.
Fiber connections of central nucleus of semicircular torus in cyprinids article in the journal of comparative neurology 49. This study describes the cytoarchitecture of the torus longitudinalis tl in adult zebrafish by using light and electron microscopy, as well as its main connections as revealed by dii tract tracing. Zebrafish international resource center zirc china zebrafish resource center czrc european zebrafish resource center ezrc. Neurons from the medulla project to the nucleus centralis and the nucleus ventrolateralis in the torus semicircularis, providing afferent auditory and hydrodynamic information. The torus semicircularis is located dorsal to the lateral tegmentum where it extends into the medial tectal ventricle and. In this paper we examine the secondorder projection from the posterior lateral.
The torus semicircularis is located dorsal to the lateral tegmentum where it extends into the medial tectal ventricle and receives ascending sensory octavolateralis input. Please use this form to recommend updates to the information in zfin. We appreciate as much detail as possible and references as appropriate. Secondorder projection from the posterior lateral line in the early.
This region is divided into subnuclei that each receive lemniscal projections. In zebrafish larvae, audition of frequencies above 100 hz is. Medulla oblongata optic tectum torus semicircularis trigeminal root. Sensorimotor transformations in the zebrafish auditory. The torus semicircularis is the major target of lateralline and inner.
Tsvl, ventrolateral nucleus of torus semicircularis. The toms of nonelectroreceptive fishes generally contains only a few cell layers. Human orthologs of this gene implicated in several diseases, including aromatase excess syndrome. Sensorimotor transformations in the zebrafish auditory system. However, no thalamic projections to the zebrafish dorsal pallium, which. Neuronal activity was recorded from different optical planes containing the octaval nuclei on in the hindbrain, which is the first known relay for auditory information in teleost fish. Zebrafish reveals different and conserved features of vertebrate. A tool for visualizing 3d expression within the brain of zebrafish transgenic lines. Pdf central neuroanatomy of electrosensory systems in fish. The following account outlines the major cns divisions in the zebrafish and the. The torus longitudinalis only occurs in ray finned fishes. Other zebrafish strains used in the study include ek, a com.
Fiber connections of central nucleus of semicircular torus. Secondorder projection from the posterior lateral line in the early zebrafish brain. This projection is well developed in zebrafish at four days after fertilization. Multitissue structure that is part of the midbrain and develops from the alar plate.
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