|Statement||Philip S. Ulinski.|
|Series||Wiley series in neurobiology|
|LC Classifications||QL938.D65 U44 1983|
|The Physical Object|
|Pagination||xiii, 284 p. :|
|Number of Pages||284|
|LC Control Number||83003670|
Feb 08, · In particular, distinct brain regions were enlarged independently to acquire similar functional properties in different amniote lineages. The neocortex and dorsal ventricular ridge (DVR) are a typical case of such parallel brain evolution in mammalian and reptilian lfcmalta.com by: 2. Dorsal ventricular ridge by Philip S. Ulinski, , J. Wiley edition, in EnglishPages: Get this from a library! Dorsal ventricular ridge: a treatise on forebrain organization in reptiles and birds. [Philip S Ulinski]. Cite this entry as: () Dorsal Ventricular Ridge (DVR). In: Binder M.D., Hirokawa N., Windhorst U. (eds) Encyclopedia of Neuroscience. Springer, Berlin, Heidelberg.
In particular the identification of homologs of the mammalian neocortex or the dorsal ventricular ridge (DVR) of birds and reptiles is still a matter of dispute. The part of the reptilian dorsal cortex that receives sensory thalamic input is clearly homologous to parts of the mammalian sensory cortex. Whether the sensory recipient part of the dorsal ventricular ridge is homologous to the mammalian sensory temporal cortex or the lateral amygdala remains a . In reptiles, as in mammals, auditory, visual, and somatosensory information reaches the telencephalon through two distinct pathways. One thalamic group projects to a cortical target, and another projects to the striatum and dorsal ventricular ridge (Figure 6).The auditory midbrain is located in the medial torus semicircularis and is comparable to the mammalian inferior colliculus. The evolutionary origin of the mammalian neocortex has long been a controversial issue; some authors propose that it partly arose from the reptilian dorsal ventricular ridge (DVR), while others suggest full homology with the dorsal cortex of reptiles and claim homology between the DVR and the mammalian claustroamygdaloid complex.
rise to the dorsal ventricular ridge, a. structure that dominates the bird pallium. and contributes to the complex cognitive. comparative work on the reptilian brain. has been done. In the. In the nonmammalian telencephalon, there are neuronal populations which correspond to cell groups in the neocortex of mammals in terms of connections, single unit-responses, and functions. Some of these populations lying within the dorsal ventricular ridge, however, are organized in Cited by: The dorsal ventricular ridge (DVR) is a pallial structure unique to the non-mammalian amniotes (reptiles and birds). The telencephalon of different vertebrate forms start similarly. A vesicle at the rostral end of the neural tube is the foundation of the telencephalon in all vertebrates. The brain is elongate and consists of forebrain (telencephalon and diencephalon) and brain stem (midbrain and hindbrain). The most significant difference to mammals and birds is the presence of the dorsal ventricular ridge in the telencephalon. The auditory portion of the midbrain appears better developed than would be expected.