Intracortical Microcirculatory Change Induced by Anesthesia in Rat Somatosensory Cortex

2009 ◽  
pp. 57-61 ◽  
Author(s):  
Kazuto Masamoto ◽  
Takayuki Obata ◽  
Iwao Kanno
Keyword(s):  
Somatosensory Cortex ◽  
Rat Somatosensory Cortex ◽  
Microcirculatory Change

Fractal properties of neurophysiologic signals in rat somatosensory cortex

2005 ◽  
Vol 25 (1_suppl) ◽  
pp. S186-S186
Author(s):  
Peter Herman ◽  
Shaun A Wahab ◽  
Andras Eke ◽  
Fahmeed Hyder
Keyword(s):  
Somatosensory Cortex ◽  
Fractal Properties ◽  
Rat Somatosensory Cortex

Removal of a compressive mass causes a transient disruption of blood-brain barrier but a long-term recovery of spiny stellate neurons in the rat somatosensory cortex

2021 ◽  
pp. 1-17
Author(s):  
Tzu-Yin Yeh ◽  
Pei-Hsin Liu
Keyword(s):  
Somatosensory Cortex ◽  
Blood Brain Barrier ◽  
Dendritic Spines ◽  
Late Onset ◽  
Brain Barrier ◽  
Blood Brain ◽  
Afferent Fibers ◽  
Prolonged Recovery ◽  
Rat Somatosensory Cortex

Background: In the cranial cavity, a space-occupying mass such as epidural hematoma usually leads to compression of brain. Removal of a large compressive mass under the cranial vault is critical to the patients. Objective: The purpose of this study was to examine whether and to what extent epidural decompression of the rat primary somatosensory cortex affects the underlying microvessels, spiny stellate neurons and their afferent fibers. Methods: Rats received epidural decompression with preceding 1-week compression by implantation of a bead. The thickness of cortex was measured using brain coronal sections. The permeability of blood-brain barrier (BBB) was assessed by Evans Blue and immunoglobulin G extravasation. The dendrites and dendritic spines of the spiny stellate neurons were revealed by Golgi— Cox staining and analyzed. In addition, the thalamocortical afferent (TCA) fibers in the cortex were illustrated using anterograde tracing and examined. Results: The cortex gradually regained its thickness over time and became comparable to the sham group at 3 days after decompression. Although the diameter of cortical microvessels were unaltered, a transient disruption of the BBB was observed at 6 hours and 1 day after decompression. Nevertheless, no brain edema was detected. In contrast, the dendrites and dendritic spines of the spiny stellate neurons and the TCA fibers were markedly restored from 2 weeks to 3 months after decompression. Conclusions: Epidural decompression caused a breakdown of the BBB, which was early-occurring and short-lasting. In contrast, epidural decompression facilitated a late-onset and prolonged recovery of the spiny stellate neurons and their afferent fibers.

Neither peripheral nerve input nor cortical NMDA receptor activity are necessary for recovery of a disrupted barrel pattern in rat somatosensory cortex

2001 ◽  
Vol 129 (1) ◽  
pp. 95-106 ◽  
Author(s):  
Carolyn B Boylan ◽  
Kay L Kesterson ◽  
Carol A Bennett-Clarke ◽  
Nicolas L Chiaia ◽  
Robert W Rhoades
Keyword(s):  
Nmda Receptor ◽  
Peripheral Nerve ◽  
Somatosensory Cortex ◽  
Receptor Activity ◽  
Rat Somatosensory Cortex

scholarly journals Monosynaptic Connections between Pairs of L5A Pyramidal Neurons in Columns of Juvenile Rat Somatosensory Cortex

2007 ◽  
Vol 18 (2) ◽  
pp. 397-406 ◽  
Author(s):  
A. Frick ◽  
D. Feldmeyer ◽  
M. Helmstaedter ◽  
B. Sakmann
Keyword(s):  
Somatosensory Cortex ◽  
Pyramidal Neurons ◽  
Rat Somatosensory Cortex
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