Motor Cortex Physiology
Mostrando 1-6 de 6 artigos, teses e dissertações.
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1. Análise dos eventos tônicos e fásicos do sono dessincronizado em ratos Wistar com lesão medular contusa / Análise dos eventos tônicos e fásicos do sono dessincronizado em ratos Wistar com lesão medular contusa
After a spinal cord injury (SCI), structural reorganization occurs locally and at multiple levels of the central nervous system (CNS). Compromising of sensory motor functions and significant alterations of other neural functions are normally related after a SCI. The circardians rhythms, specially the sleep-wake cycle are frequently affected after a trauma or
Publicado em: 2009
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2. Efeitos da estimulação elétrica do córtex motor na modulação da dor: análise comportamental e eletrofisiológica em ratos / Effects of electrical stimulation of motor cortex on pain modulation: behavior and electrophysiological study in rats.
Background. The motor function has been associated to sensory and pain attenuation, before during and shortly after the muscle activity. How ever the anatomical and functional basis of this phenomenon is not yet defined. The present study was designed to set an animal model and investigate the effect of subthreshold electrical stimulation of motor cortex (MC
Publicado em: 2007
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3. Differences in frontal cortical activation by a working memory task after substitution of risperidone for typical antipsychotic drugs in patients with schizophrenia
Antipsychotic drug treatment of schizophrenia may be complicated by side effects of widespread dopaminergic antagonism, including exacerbation of negative and cognitive symptoms due to frontal cortical hypodopaminergia. Atypical antipsychotics have been shown to enhance frontal dopaminergic activity in animal models. We predicted that substitution of risperi
The National Academy of Sciences.
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4. Modeling facilitation and inhibition of competing motor programs in basal ganglia subthalamic nucleus–pallidal circuits
The motor symptoms of Parkinson's disease (PD) implicate the basal ganglia (BG) in some aspect of motor control, although the role the BG play in regulation of motor behavior is not completely understood. The modeling study presented here takes advantage of available cellular, systems, and clinical data on BG and PD to begin to build a biophysically based ne
National Academy of Sciences.
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5. Dynamic magnetic resonance imaging of human brain activity during primary sensory stimulation.
Neuronal activity causes local changes in cerebral blood flow, blood volume, and blood oxygenation. Magnetic resonance imaging (MRI) techniques sensitive to changes in cerebral blood flow and blood oxygenation were developed by high-speed echo planar imaging. These techniques were used to obtain completely noninvasive tomographic maps of human brain activity
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6. Altered thalamic response to levodopa in Parkinson’s patients with dopa-induced dyskinesias
Parkinson’s disease (PD) is a progressive neurologic condition characterized by tremor, slowness, stiffness, and unstable posture. Degeneration of dopamine-producing neurons in the substantia nigra causes PD. Treatment with levodopa, a precursor of dopamine, initially ameliorates the clinical manifestations of PD. However, chronic levodopa treatment can pr
The National Academy of Sciences.