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At least 505 records · Page 28Linked to original sources
PubMed1986

[Features of activation of reticulospinal neurons of the pons and medulla oblongata of the cat by somatosensory stimuli of different modalities].

Response of reticulo-spinal (RS) neurons in two reticular structures (n. reticularis pontis caudalis and n. reticularis gigantocellularis) to electrical nerve stimulation and natural mechanical non-nociceptive (tapping) and nociceptive (pinch and prick) stimuli were studied in chloralose-anesthetized cats. Essential differences in sensory properties of the pontine and bulbar RS-neurons were found. About a half of bulbar RS-neurons (43%) were activated only by high-threshold somatic afferents and nociceptive stimuli, the rest--by both nociceptive and non-nociceptive ones. On the contrary the most of pontine neurons (81%) responded either to non-nociceptive or to both noci- and non-nociceptive stimuli. A clear-cut correlation between sensory characteristics of the RS-neurons and their axon conduction velocities was established. Data obtained evidence for the existence of some spatial (rostro-caudal) differentiation of brainstem RS-neurons with different functional properties. Peculiarities of this differentiation and its possible functional significance are discussed.

Animals↗
PubMed1986

[Hematomas of the lenticular nucleus and pons in a hypertensive patient].

Secondary pontine hemorrhages are not rare in intracranial hypertension caused by a supratentorial mass lesion. Cerebral herniation and caudal dislocation of the brainstem account for the secondary pontine hemorrhages. In the present case, two unrelated hemorrhages were demonstrated by an early CT. Neurological findings and CT thus suggest that this is a rare case in which supratentorial and infratentorial hypertensive intracerebral hemorrhages occurred simultaneously.

Adult↗
PubMedDate not supplied

[Surgical treatment of nodular forms of astrocytoma of the medulla oblongata and pons].

In the recent 3 years the authors removed 15 tumors of the caudal parts of the brain stem by microsurgical techniques. The article analyses the peculiarities of the diagnosis, the topographic variants, and the surgical techniques for removing tumors of the caudal parts of the brain stem. Ln 14 of the 15 patients the tumor was removed radically; the general cerebral symptoms regressed subsequently and the focal symptomatology improved. One patient died after partial removal of a large tumor of the stem which was marked by infiltrative growth.

Adolescent↗
PubMed1986

[Isolated sensory deficit of 1 side of the body as a result of a hematoma of the pons].

In a patient with a history of sudden onset of an isolated sensory syndrome of the right side of the body the sensory deficit was exclusively related to lemniscal sensitivity. NMR imaging showed a small hemorrhage in the left paramedian portion of the pontine tegmentum, corresponding precisely to the location of the median lemniscus.

Afferent Pathways↗