PYRAMIDAL TRACT RESPONSE TO CORTICAL STIMULATION IN THE RAT
نویسندگان
چکیده
منابع مشابه
Modulation of cortical and pyramidal tract induced motor responses by electrical stimulation of the basal ganglia.
Two general mechanisms based on anatomical studies are possible for modulation of motor activity by the caudate nucleus and globus pallidus. These mechanisms are: (1) modulation of the output of cortical neurons that exert motor influences; and (2) modulation of subcortical neurons that exert motor influences. Differentiation between these two mechanisms was accomplished in the present study by...
متن کاملDifferences in the BOLD fMRI response to direct and indirect cortical stimulation in the rat.
Functional MRI (fMRI) exploits a relationship between neuronal activity, metabolism, and cerebral blood flow to functionally map the brain. We have developed a model of direct cortical stimulation in the rat that can be combined with fMRI and used to compare the hemodynamic responses to direct and indirect cortical stimulation. Unilateral electrical stimulation of the rat hindpaw motor cortex, ...
متن کاملResponses of primary somatosensory cortical neurons to controlled mechanical stimulation.
The results of psychophysical studies suggest that displacement velocity may contribute significantly to the sensation of subcortical somatosensory neurons. The cortical correlates of these phenomena, however, are not known. In the present study the responses of rapidly adapting (RA) neurons in the forelimb region of cat primary somatosensory cortex (SI) to controlled displacement of skin and h...
متن کاملMinicolumnar Patterns in the Global Cortical Response to Sensory Stimulation
In 1978 Mountcastle [1] hypothesized that the smallest functional unit of neocortical organization (the “minicolumn”) is a radial cord of cells about 30–50 μm in diameter, and that sensory stimuli activate local groupings of minicolumns (called “macrocolumns”). This hypothesis subsequently received support from multiple lines of experimental evidence, leading to its substantial elaboration. Str...
متن کاملSynaptic responses of cortical pyramidal neurons to light stimulation in the isolated turtle visual system.
The resistance of the turtle brain to hypoxic injury permits a unique in vitro preparation in which the organization and function of visual cortex can be explored. Intracellular recordings from cortical pyramidal neurons revealed biphasic responses to flashes of light, consisting of an early phase (50-100 msec) of concurrent inhibitory and excitatory activation, followed by a longer, inhibitory...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Japanese Journal of Physiology
سال: 1968
ISSN: 1881-1396,0021-521X
DOI: 10.2170/jjphysiol.18.432