Sborníky

Sborníky Nalezeno 1,262 záznamů.  začátekpředchozí1030 - 1039dalšíkonec  přejít na záznam: Hledání trvalo 0.01 vteřin. 
Extracellular space volume fraction and geometry in human cortex and glial tumors
Homola, Aleš ; Vargová, Lýdia ; Zámečník, J. ; Tichý, M. ; Beneš, V. ; Syková, Eva
Ecs diffusion parameters in human temporal cortex similar to those previously determined in rat cortex. Volume fraction ? and tortuosity ? are increased in astrocytic gliomas and the higher the glioma´s WHO grade the greater the ECS volume and tortuosity increase. Migration and invasiveness correlate with an increase in ECS volume.
Neuron-glia communication by extrasynaptic transmission
Syková, Eva
Dynamic changes in ECS ionic composition, volume and geometry accompany neuronal activity, neuronal loss, glial development and proliferation, aging, CNS injury, anoxia/ischemia, spreading depression, tumors, inflammation dyemyelination and many other brain pathological states.
Biocompatible polymer hydrogels usable for nervous tissue regeneration
Lesný, Petr ; DeCroos, Jane ; Přádný, Martin ; Vacík, Jiří ; Syková, Eva
PHPMA hydrogel matrices have the ability to induce tissue formation within them and therefore support the regeneration of nervous tissue.
Diffusion and MRS in a rat cortex after traumatic injury
Voříšek, Ivan ; Herynek, V. ; Burian, M. ; Hájek, M. ; Niclay, K. ; Syková, Eva
An increase in diffusion barriers, manifestes by a decrease of both ADCTMA and ADCW, occurs throughout the entire cortex of the wounded hemisphere. These changes are related to astrogliosis and to an accumulation of extracellular matrix molecules without significant changes in ECS volume.
Suppression of 2f1-f2 distortion product otoacoustic emissions by electrical stimulation of the inferior colliculus in guinea pigs
Popelář, Jiří ; Mazelová, Jana ; Syka, Josef
Electrical stimulation of certain parts of the IC resulted in the depression of the DPOAE amplitude by 0.1-2 dB. The value of maximal DPOAE suppression was similar to the DPOAE suppression produced by acoustical stimulation of the contralateral ear. Our results indicate that electrical stimulation of the external cortex of the IC can activate the efferent system and produce DPOAE suppression by similar mechanisms as does acoustical stimulation of the contralateral ear.
A behavioral and electrophysiological study of the effects of noise exposure on auditory function in rat
Rybalko, Natalia ; Mazelová, Jana ; Syka, Josef
The values of the gap detection threshold doubled after exposure to 110 dB SPL and quadrupled after exposure to 115-120 dB SPL. GDT recovered to the original values during 1-2 weeks. Increased gap detection thresholds after noise exposure appear connected with elevated hearing thresholds, the deterioration in the performance of some animals in behavioral rasts after strong intensity noise (120 dB SPL) may signal the occurrence of tinnitus in these animals.
Representation of communication sounds in the inferior colliculus of the guinea pig
Šuta, Daniel ; Kvašňák, Eugen ; Popelář, Jiří ; Syka, Josef
The spectrotemporal discharge patterns of the neuronal population were clearly related to the spectrotemporal acoustic patterns of vocalization sounds.This study provides evidence for encoding of the spoctrotemporal acoustic pattern of vocalization sounds in a spcific and distributed way by the firing patterns of a population of IC units.
Functional characteristics of neurons in the auditory thalamus
Kvašňák, Eugen ; Šuta, Daniel ; Popelář, Jiří ; Syka, Josef
The MGB, is similarly as the inferior colliculus (IC) is organized into three subdivisions, with the ventral MGB characterized by the quickest onset reaction with the lowest thresholds to auditory stimulation and with the same ratio of monotonic and non-monotonic RLFs.

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