A nucleus surrounded by a membrane is found in almost all the cells of eukaryotes and thus sets them apart from the cells of prokaryotes, such as bacteria, which do not contain nuclei. See more at cell. 3. Astronomy The solid central part of a comet, composed of ice, frozen gases, ...
Unitary responses evoked in the nucleus medialis dorsalis (MD) of the thalamus after stimulation of the amygdaloid nuclei were studied in chloralosed cats. Latencies distribution histogram shows two peaks at 20–30 and 300–400 msec; 24% of the units pertaining to the short latency group had ...
of the thalamus.They were also found ipsilaterally in thesubstantia nigra and the dorsal nucleus of the midbrain raphe.In the case ofcats after injections of the enzyme in different depths of the head of caudate nu-cleus the labelled neurons were found in the medial nuclei of thalamus,...
The medial lemniscus, also called Reil’s band or ribbon, is a channel for sensory data to the thalamus from the gracile and cuneate nuclei in the brain. Nearly all the cutaneous mechanoreceptors in the body that transmit information about light touch, vibration, and pressure signals will trav...
However, the underlying pathophysiology differs between these nuclei, with impaired excitatory input in the MeApd but reduced membrane excitability in the MeApv. The postweaning period may be especially sensitive to disruptions of the social environment because social experience during this critical ...
The behavior of rats with chronic lesions of the head of the caudate-putamen or of the dorsomedial nucleus of the thalamus was examined in a variety of situations known to be sensitive to damage to the medial prefrontal or orbital prefrontal cortex of rats, respectively. Lesions of either struc...
Our observation of large, sharp-rising EPSPs generated during respiratory cycles indicate that the respiratory input to Reu is likely due to “driver” excitatory synapses that form on proximal dendrites of the thalamus45,46,47. For higher-order nuclei, such inputs originate primarily in layer V...
The connections of the septal region in the rat. The medial septal nucleus also sends fibers to the midbrain (the ventral tegmental area and raphe nuclei) and to the parataenial nucleus of the thalamus, while the nucleus of the diagonal band has an additional projection to the ... Larry,...
Additional terminals were observed bilaterally in the nuclei of the posterior commissure and pretectal areas at the midbrain diencephalic junction. In the thalamus, labeled axons formed into three groups which terminated in: (1) the contralateral paraventricular complex and medial dorsal nucleus; (2)...
trigonum cerebrale,fornix- an arched bundle of white fibers at the base of the brain by which the hippocampus of each hemisphere projects to the contralateral hippocampus and to the thalamus and mamillary bodies nerve tissue,nervous tissue- tissue composed of neurons ...