What's the difference between prosencephalon and telencephalon?
Prosencephalon
Definition:
(n.) The anterior segment of the brain, including the cerebrum and olfactory lobes; the forebrain.
(n.) The cerebrum.
Example Sentences:
(1) We conclude that the alar plate of the prosencephalon at 7-10 stage is not definitively determined and may retain an ability to differentiate into the optic tectum, whereas the prospective fate of the rhombencephalon has already been determined at 7-10 stage.
(2) Enzymatic activities were determined in the prosencephalon of rats which had been exposed repeatedly for 8 hrs, either from the age of 1 to 17 days or in adulthood, to an altitude of 7,000 m in a barometric chamber (up to a total of 104 hrs).
(3) The many abnormalities result from an anomalous development of structures derived from the prosencephalon.
(4) Different regions of the prosencephalon and mesencephalon of the adult hamster brain displayed differences in the immunofluorescence expression of astrocytic proteins, namely glial fibrillary acidic protein and J1-31 antigen (30 kD protein).
(5) The prosencephalon, and primordium of the hypophysis were surgically removed from chick embryos at 33-38 hours of incubation.
(6) The emergence of the infundibulum is situated, at first, on the floor of the prosencephalon; Rathke's pouch appears as a vesicle without connection with any other structure.
(7) Significantly smaller volumes were also found for cerebellum, prosencephalon-mesencephalon unit, cerebral cortex, frontal cortex, parieto-occipitotemporal cortex, and hippocampus.
(8) In the first, the mid-mesencephalic vesicle or caudal mesencephalic vesicle alar plate (which is En protein-positive) was transplanted from a quail embryo into an En protein-negative region of chick neuroepithelium, the prosencephalon (mMP and cMP grafts, respectively).
(9) Characteristic patterns were found for the shape of the prosencephalon and for the insular, parietooccipital, and frontal cortex in the aboriginal group.
(10) The expression domains of the three genes in the developing prosencephalon coincide with anatomical boundaries, particularly apparent in the diencephalon.
(11) On PND 7-16 serotonin and 5-hydroxyindoleacetic acid levels decreased in the prosencephalon and cerebellum-pons of offspring exposed prenatally (P) or postnatally (15,25) to SAD.
(12) Correlation analyses of the GI with age, body weight, body length, brain weight and volume of the prosencephalon and the cortex show no significant results.
(13) In the rat prosencephalon it proved possible to differentiate lysosomal ribonuclease from alkaline ribonuclease activity, which could be detected only in the presence of p-chlormercuribenzoate.
(14) The perinatal development of anterior commissure projections was studied in hamsters by use of carbocyanine crystals implanted either into the commissure or into the ventrolateral prosencephalon.
(15) The tela choroidea of the prosencephalon in sheep is vascularized by an anterior choroidal artery arising from the rostral branch of the carotid cerebral artery and by a posterior choroidal artery, arising from the caudal cerebral artery, branch of the carotidobasilar system.
(16) Based on these observations a description is given of the neuromeres present within the prosencephalon and of the termination of the sulcus limitans.
(17) On E13 the first dopaminergic cells are detected in the ventral prosencephalon.
(18) Transplantation of a piece of the alar plate of the prosencephalon or of the rhombencephalon of quail embryos into the roof of the mesencephalon of chick embryos was carried out at 7-10 somite stage.
(19) Treatment decreased the developmental levels of norepinephrine and dopamine in the prosencephalon (forebrain) and cerebellum-pons of the offspring on postnatal days (PND) 7 and 7-16, respectively.
(20) The syndromatic form has been named "XK-aprosencephaly", and is characterized by near total absence of prosencephalon with a midline oculofacial defect similar to the most severe forms of holoprosencephaly, in association with limb and genital anomalies.
Telencephalon
Definition:
Example Sentences:
(1) The telencephalon of teleost fish shows high affinity uptake for D-[3H]aspartate, intermediate levels of GABAergic markers and low levels of cholinergic enzymes.
(2) Numerous CA fibers which are first observed at the level of the preoptic area, ascend through the central zone of the telencephalon and arborize profusely particularly within the medial zone of area dorsalis telencephali.
(3) AR and ER mRNA-containing neurons were widely distributed in the rat brain, with the greatest densities of cells in the hypothalamus, and in regions of the telencephalon that provide strong inputs in the medial preoptic and ventromedial nuclei, each of which is thought to play a key role in mediating the hormonal control of copulatory behavior, as well as in the lateral septal nucleus, the medial and cortical nuclei of the amygdala, the amygdalohippocampal area, and the bed nucleus of the stria terminalis.
(4) Injections of horseradish peroxidase into the telencephalon retrogradely labeled neurons ipsilaterally in various thalamic, preglomerular, and tuberal nuclei, the nucleus of the locus coeruleus (also contralaterally), the superior raphe, and portions of the nucleus lateralis valvulae.
(5) Naloxone-displaceable binding was observed in all regions of the brain, with a density ranking order of cerebellum greater than telencephalon greater than optic tectum greater than hypothalamus greater than brain stem greater than pituitary gland.
(6) The histologic and ultrastructural appearance of the telencephalon of the normal 21-day guinea-pig foetus was described for comparative purposes.
(7) Within the telencephalon, chronic but not acute treatment with T3 or T4 selectively increased dopamine (DA) utilization within the diffuse type of DA nerve terminal systems of the nucleus accumbens.
(8) High-energy radiation bombardment of intact frozen telencephalon resulted in a biphasic inactivation curve for [3H]AMPA binding.
(9) M cells were located at the ventralmost region of the junction between the olfactory bulb and telencephalon, while L cells were scattered more rostrally along the ventromedial surface of the olfactory bulb.
(10) Levels of acetylcholine were significantly elevated in the telencephalon and diencephalon + mesencephalon of rats killed by near-freezing during conditioned suppression of food-reinforced lever pressing, whereas levels of serotonin, dopamine, and norepinephrine were not altered.
(11) Some immunopositive cells were detected in the rostral telencephalon but not caudal to the telencephalon.
(12) Extensive plexuses of TH-positive nerve terminals were found in many parts of the telencephalon, mainly confined to the subcortical and limbic cortical structures.
(13) Areas rich in [3H]-SP binding were located in the ventral telencephalon, in the entire hypothalamic and thalamic region, in the midbrain tegmentum, in the optic tectum, in the valvulla cerebelli and in the medulla oblongata.
(14) The earliest generated cells of the cat's telencephalon that may play a role in the formation of the primary visual cortex are the subject of this study.
(15) The performance of tadpoles and juvenile frogs on a battery of behavioral tests was compared before and after tectotomy, removal of the telencephalon (decerebration), tectotomy in conjunction with decerebration, or before and after a sham operation.
(16) Previous work has shown that aggregate cultures prepared from fetal rat telencephalon and grown in a chemically defined medium offer a useful model to study developmental processes such as myelin synthesis.
(17) Norepinephrine (NE) levels in the hypothalamus and telencephalon of genetically obese mice with the OBOB and DBDB mutations are significantly higher than those of their lean littermates.
(18) We tested the contribution of GABAergic inhibition to the response characteristics of 213 neurons in the auditory telencephalon of chronically prepared nonanesthetized chickens.
(19) Three groups of immunoreactive neurons were identified: the first, in the telencephalon, is a paired group of cells scattered near the two telencephalic ventricles; the second group lies near the preoptic recess; the third group occurs in the ventral wall of the infundibulum.
(20) In the telencephalon, the nucleus of the diagonal band and the medial prefrontal cortex contained retrogradely labelled neurons ipsilateral to the TLD injection site.