Projections from the rostral pole of the inferior colliculus to the cat superior colliculus.
نویسندگان
چکیده
The neuroanatomical data given here reveal a dense projection from the rostral pole of the cat inferior colliculus (rpIC) to the superior colliculus (SC). A portion of this pathway distributes in 'patches' across the ventral portion of the intermediate grey layer. These finding suggest that the rpIC input to the SC might play a role in determining the auditory receptive fields of SGI neurons and in the construction of the SC's precise two dimensional map of auditory space.
منابع مشابه
Cerebellar projections to the superior colliculus in the cat.
The projections from the cerebellar nuclei to the superior colliculus of the cat have been studied by injecting small amounts of horseradish peroxidase into the colliculus and charting the distribution of the labeled neurons in the cerebellar nuclei. The results show that the cerebellar nuclei project to the deep layers of the superior colliculus, especially contralaterally. Of the deep cerebel...
متن کاملA periodic network of neurochemical modules in the inferior colliculus.
A new organization has been found in shell nuclei of rat inferior colliculus. Chemically specific modules with a periodic distribution fill about half of layer 2 of external cortex and dorsal cortex. Modules contain clusters of small glutamic acid decarboxylase-positive neurons and large boutons at higher density than in other inferior colliculus subdivisions. The modules are also present in ti...
متن کاملHistological and Biochemical Alterations in the Superior Colliculus and Lateral Geniculate Nucleus of Juvenile Rats Following Prenatal Exposure to Marijuana Smoke
Prenatal exposure to marijuana has been associated with a variety of brain deficits, as Δ9-tetrahydrocannabinol (THC), its main active ingredient crosses the placenta and affects foetal brain development. Despite this effect, marijuana remains a commonly abused substance among pregnant women. In the current study, we examined the histological and biochemical changes in the superior colliculus (...
متن کاملAberrant axonal projections in mice lacking EphA8 (Eek) tyrosine protein kinase receptors.
We have generated mice homozygous for a mutation that disrupts the gene encoding EphA8, a member of the Eph family of tyrosine protein kinase receptors, previously known as Eek. These mice develop to term, are fertile and do not display obvious anatomical or physiological defects. The mouse ephA8/eek gene is expressed primarily in a rostral to caudal gradient in the developing tectum. Axonal tr...
متن کاملDescending projections to the inferior colliculus from the posterior thalamus and the auditory cortex in rat, cat, and monkey.
Projections from the posterior thalamus and medial geniculate body were labeled retrogradely with wheat germ agglutinin conjugated to horseradish peroxidase injected into the rat, cat, and squirrel monkey inferior colliculus. Neurons were found ipsilaterally in the (1) medial division of the medial geniculate body, (2) central gray, (3) posterior limitans nucleus, and the (4) reticular part of ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Brain research
دوره 881 2 شماره
صفحات -
تاریخ انتشار 2000