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The Role of NMDA and Non-NMDA Excitatory Amino Acid
The Role of NMDA and Non-NMDA Excitatory Amino Acid

... and Willis, 199 I a,b, Dougherty et al., 1992). Recordings from STT cells were made within 750 pm from the nearest edge of the microdialysis fiber and were generally much closer than this. Variation in the distance of the recording sites from the fiber did not result in any apparent differences in t ...
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The Organization of Behavioral Repertoire in Motor Cortex

... representation. The method was then relatively neglected in the motor system until our stimulation studies in monkeys suggested a possible mapping of complex movements in the precentral gyrus (Cooke & Graziano 2004a; Graziano et al. 2002a, 2003, 2004, 2005). We found that short stimulation trains ev ...
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... ephaptic interactions in healthy systems without such unusual properties. Several studies have shown significant effects of field potentials in response to electrical stimulation, when many neurons are simultaneously active (Dalkara et al., 1986; Turner and Richardson, 1991), but so far no interacti ...
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... The negative sign here simply means that the signal will be 30 dB weaker on the fluid side of the boundary. Consequently, if the airborne sound wave were to directly drive a simple membrane covering the oval window, a 30 dB loss in signal intensity would occur at the air-fluid boundary. This is not ...
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... CF stimuli, narrow frequency receptive fields (reflected in narrow threshold-tuning functions and response areas), and a topographic arrangement of CF representations (Doron et al. 2002; Merzenich et al. 1975; Phillips et al. 1985b; Sally and Kelly 1988). Similar features are found throughout the le ...
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... monkeys (Macaca fascicularis). Some of the results from these injections have already been reported in another article (Falchier et al., 2002). Central area 17 injections were in the cortex subserving 0º–2º in the lower visual field (M85RHDY and M85RHFsB). Injections aimed at the peripheral represen ...
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... o Clinical: testing reflexes can determine level of the lesion (hyper or hypo-reflexive) Muscle spindles give info about length of muscle and GTO give info about the tension on the muscle o provide continuous, subconscious feedback to the spinal cord, cerebellum, and cortex o they also play a role i ...
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... the Big Brown Bat. The existence of orderly representations of the sensory surface in somatosensory cortex and other brain regions has long been known. Earliest observations of correspondence between peripheral tactile stimulation and cortical excitation were reported during the late 1930s and early ...
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... POSTURE-GAIT CONTROL Figure 1 illustrates our recent understanding of basic signal flows involved in motor control. Sensory signals arising from external stimuli and/or internal visceral information have various functions. For example, they are to be utilized for cognitive processing such as product ...
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... frequencies of sound. Organization in the somatosensory information is going to be even more important. The huge area of the skin makes it imperative that the brain, among other pieces of information to track, must know where the sensory information is coming from. In this section, two levels of org ...
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... Each of the descending pathways involved in motor control has a number of anatomical, molecular, pharmacological, and neuroinformatic characteristics. They are differentially involved in motor control, a process that results from operations involving the entire motor network rather than from the bra ...
1-Student`s Refexes
1-Student`s Refexes

... The extent of the response in a reflex depends on the intensity of the stimulus. The more intense the stimulus is, the greater is the spread of activity in the spinal cord, involving and recruiting more and more other motor neurons . when the sole of the foot is stimulated by a weak painful stimulus ...
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the manuscript as pdf

... awareness of self and environment. The fluctuations suggest that their limited functional capacities might be augmented if their highest functional performance level was stabilized. In some cases MCS patients fluctuate quite widely, revealing marked residual cerebral function including capacities fo ...
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Evoked potential

An evoked potential or evoked response is an electrical potential recorded from the nervous system of a human or other animal following presentation of a stimulus, as distinct from spontaneous potentials as detected by electroencephalography (EEG), electromyography (EMG), or other electrophysiological recording method.Evoked potential amplitudes tend to be low, ranging from less than a microvolt to several microvolts, compared to tens of microvolts for EEG, millivolts for EMG, and often close to a volt for ECG. To resolve these low-amplitude potentials against the background of ongoing EEG, ECG, EMG, and other biological signals and ambient noise, signal averaging is usually required. The signal is time-locked to the stimulus and most of the noise occurs randomly, allowing the noise to be averaged out with averaging of repeated responses.Signals can be recorded from cerebral cortex, brain stem, spinal cord and peripheral nerves. Usually the term ""evoked potential"" is reserved for responses involving either recording from, or stimulation of, central nervous system structures. Thus evoked compound motor action potentials (CMAP) or sensory nerve action potentials (SNAP) as used in nerve conduction studies (NCS) are generally not thought of as evoked potentials, though they do meet the above definition.
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