نتایج جستجو برای: Sensory Pathway
تعداد نتایج: 401618 فیلتر نتایج به سال:
Introduction: Today, clinicians and neuroscientists need to have a comprehensive survey of neurological pathologies and injuries. For the First-time, SEEP contrast and Spin-Echo pulse sequences was used for functional imaging of the Lumbar spinal cord. This method used by several research groups for Spinal cord mapping, but other researchers tried to improve BOLD fMRI to Spina...
An early component of the somatosensory evoked potential, arising from the primary sensory cortex in man is attenuated during voluntary finger movement. The median nerve at the wrist was stimulated while the subject performed fractionated finger movements with the same hand. Subcortical components of the somatosensory evoked potential were not changed but the P25 cortical component was attenuat...
A recent study has shown that Jacky lizards adjust their movement-based visual signaling in response to the varying environmental conditions; the results indicate that this species has highly sophisticated communication and sensory processing strategies.
Unlike the monosynaptic "stretch" reflex, the exact neuronal pathway for a simple cutaneous reflex has not yet been defined in any vertebrate. In young frog tadpoles, we made whole-cell recordings from pairs of spinal neurons. We found direct, excitatory, glutamatergic synapses from touch-sensitive skin-sensory neurons to sensory pathway interneurons, and then from these sensory interneurons to...
Brains have evolved to optimize sensory processing. In primates, complex cognitive tasks must be executed and evolution led to the development of large brains with many cortical areas. Rodents do not accomplish cognitive tasks of the same level of complexity as primates and remain with small brains both in relative and absolute terms. But is a small brain necessarily a simple brain? In this rev...
adenosine acts as neuromodulator in the brain, which its involvement in a wide range of brain processes and diseases has been studied, such as epilepsy, sleep, anxiety, panic disorder, alzheimer’s disease, parkinson’s disease and schizophrenia. adenosine receptors have been detected: a1r, a2ar (a2ar), a2br, and a3r. a1r and a2r inhibit camp production, while a2ar and a2br stimulate camp product...
the objective of this study was to observe the apoptosis-inducing effect and mechanism of baicalin on human cervical cancer hela cells. the inhibitory effect of baicalin on the growth of hela cells was measured by mtt assay, and cell proliferation and migration was analyzed by cell scratch assay. morphological changes of apoptotic cells were viewed by the light microscope and electron microscop...
In active sensation, sensory information is acquired via movements of sensory organs; rats move their whiskers repetitively to scan the environment, thus detecting, localizing, and identifying objects. Sensory information, in turn, affects future motor movements. How this motor-sensory-motor functional loop is implemented across anatomical loops of the whisker system is not yet known. While ind...
In many sensory systems, the neural signal splits into multiple parallel pathways. For example, in the mammalian retina, ~20 types of retinal ganglion cells transmit information about the visual scene to the brain. The purpose of this profuse and early pathway splitting remains unknown. We examine a common instance of splitting into ON and OFF neurons excited by increments and decrements of lig...
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