Low vision and brain plasticity Symposium abstract
... this system during perceptual learning robustly enhances sensory perception. Especially, pairing cholinergic activation with visual stimulation increases the signal-to-noise ratio, cue detection ability and long-term facilitation in the primary visual cortex. The mechanisms of cholinergic enhancemen ...
... this system during perceptual learning robustly enhances sensory perception. Especially, pairing cholinergic activation with visual stimulation increases the signal-to-noise ratio, cue detection ability and long-term facilitation in the primary visual cortex. The mechanisms of cholinergic enhancemen ...
from ups
... the effects of ischaemia: Halothane anaesthesia was used during the surgery and intracardiac perfusion was employed to reduce the brain temperature, to increase the intracerebral concentration of glucose and magnesium and to decrease that of calcium. The spread of stimulating current has been determ ...
... the effects of ischaemia: Halothane anaesthesia was used during the surgery and intracardiac perfusion was employed to reduce the brain temperature, to increase the intracerebral concentration of glucose and magnesium and to decrease that of calcium. The spread of stimulating current has been determ ...
THE NEUROLOGICAL EXAMINATION
... • FINGER TO FINGER TO NOSE TESTING • HEEL TO SHIN • GAIT – TANDEM ...
... • FINGER TO FINGER TO NOSE TESTING • HEEL TO SHIN • GAIT – TANDEM ...
Harding, G. W. and A. L. Towe. 1995. Neuron Response to Direct
... are several different routes by which neurons in a given track may be excited after cortical stimulation, one of which involves s neuron activation of m neurons. Towe et al. (1976) described a method to estimate the nature of the excitability change produced on m neurons by local s neurons. The expe ...
... are several different routes by which neurons in a given track may be excited after cortical stimulation, one of which involves s neuron activation of m neurons. Towe et al. (1976) described a method to estimate the nature of the excitability change produced on m neurons by local s neurons. The expe ...
The Effect of Slow Electrical Stimuli to Achieve Learning in Cultured
... network level, showing that a change in a simple input-output relationship between two neurons required network wide connectivity changes. It is not completely understood how and why slow electrical stimulation (fstim ,1 Hz) may alter network connectivity. A recent study suggested that low frequency ...
... network level, showing that a change in a simple input-output relationship between two neurons required network wide connectivity changes. It is not completely understood how and why slow electrical stimulation (fstim ,1 Hz) may alter network connectivity. A recent study suggested that low frequency ...
PREFERENTIAL POTENTIATION OF WEAKER INPUTS TO PRIMARY
... All work presented within this thesis represents the collective effort of many wonderful minds. Some of those minds have contributed to this thesis directly, with ideas, technical assistance, or by helping with the write-up. Others have helped through less direct means, such as by motivating, inspir ...
... All work presented within this thesis represents the collective effort of many wonderful minds. Some of those minds have contributed to this thesis directly, with ideas, technical assistance, or by helping with the write-up. Others have helped through less direct means, such as by motivating, inspir ...
Document
... Modulates activity in muscles that rotate the head and upper torso and modulate adjustments pertinent to limb and body orientation in the gravitational field. ...
... Modulates activity in muscles that rotate the head and upper torso and modulate adjustments pertinent to limb and body orientation in the gravitational field. ...
Cerebellar Unit Activity and the Movement Disruption Induced by
... V 4). A 3-mm trephine opening above the dentate nucleus (AP 11.0, L 3.0) was used for implanting of a stainless steel guiding cannula (2 mm internal diameter) above the cerebellar hemisphere ipsilateral to the preferred forepaw. A silver screw (2 mm in diameter) was implanted into the frontal bone 7 ...
... V 4). A 3-mm trephine opening above the dentate nucleus (AP 11.0, L 3.0) was used for implanting of a stainless steel guiding cannula (2 mm internal diameter) above the cerebellar hemisphere ipsilateral to the preferred forepaw. A silver screw (2 mm in diameter) was implanted into the frontal bone 7 ...
Auditory Aerobics
... reasoning and trial and error. ►You design your own scenario from what is being presented as you go along. ...
... reasoning and trial and error. ►You design your own scenario from what is being presented as you go along. ...
A multiple regression model of normal central and peripheral motor
... Methods for PMCT Estimation. Several methods are available for estimating PMCT, and the approach used must be kept in mind when comparing the corresponding CMCT readings between studies. Magnetic20,21 or electrical22 stimulation over the vertebral column excites spinal roots near the exit foramina, ...
... Methods for PMCT Estimation. Several methods are available for estimating PMCT, and the approach used must be kept in mind when comparing the corresponding CMCT readings between studies. Magnetic20,21 or electrical22 stimulation over the vertebral column excites spinal roots near the exit foramina, ...
Topographic Mapping with fMRI
... Any temporal signal (just about) can be represented as a sum of sine and cosine waves (circular motion) of different frequencies and amplitudes. ...
... Any temporal signal (just about) can be represented as a sum of sine and cosine waves (circular motion) of different frequencies and amplitudes. ...
D22 - Viktor`s Notes for the Neurosurgery Resident
... monosynaptic reflex obtained by nerve stimulation (sensory proprioceptive fibers must be excited); afferent pathway - spindle afferent (Ia) fibers; efferent pathway - alpha motor axons H reflex is similar to tendon stretch reflex*, except neuromuscular spindles are bypassed *i.e. evaluates both se ...
... monosynaptic reflex obtained by nerve stimulation (sensory proprioceptive fibers must be excited); afferent pathway - spindle afferent (Ia) fibers; efferent pathway - alpha motor axons H reflex is similar to tendon stretch reflex*, except neuromuscular spindles are bypassed *i.e. evaluates both se ...
Atonia-Related Regions in the Rodent Pons and Medulla
... (P ⬍ 0.001, df ⫽ 67, paired t-test; Fig. 3) for both short and long responses. Muscle-tone suppressions induced by pontomedullary stimulation were a function of the intensity (Figs. 3 and 4) and frequency of the stimulation (Fig. 3). Current intensity thresholds that produced muscle-tone suppression ...
... (P ⬍ 0.001, df ⫽ 67, paired t-test; Fig. 3) for both short and long responses. Muscle-tone suppressions induced by pontomedullary stimulation were a function of the intensity (Figs. 3 and 4) and frequency of the stimulation (Fig. 3). Current intensity thresholds that produced muscle-tone suppression ...
Implantable microcoils for intracortical magnetic
... an inability to selectively target (or avoid) individual types. Further, passing axons from neurons located in distant parts of the brain are highly sensitive to prosthetic stimulation (5); this can lead to the spread of activation well beyond the local region surrounding a given electrode and furth ...
... an inability to selectively target (or avoid) individual types. Further, passing axons from neurons located in distant parts of the brain are highly sensitive to prosthetic stimulation (5); this can lead to the spread of activation well beyond the local region surrounding a given electrode and furth ...
PDF
... the contralateral CN, in close apposition to neurons of all major cell types throughout the CN [6]. These observations are consistent with our results showing commissural inhibitory responses in most categories of cells of the PVCN and DCN. In addition to direct monosynaptic inhibitory projections, ...
... the contralateral CN, in close apposition to neurons of all major cell types throughout the CN [6]. These observations are consistent with our results showing commissural inhibitory responses in most categories of cells of the PVCN and DCN. In addition to direct monosynaptic inhibitory projections, ...
Evidence of a Specific Spinal Pathway for the Sense of Warmth in
... In contrast, in animal studies, based on antidromic activation of trigeminothalamic (Craig and Dostrovsky 1991; Price et al. 1978) or spinothalamic cells (Christensen and Perl 1970; Craig and Dostrovsky 2001; Dostrovsky and Craig 1996; Kumazawa et al. 1975), the finding of second-order warmth-specif ...
... In contrast, in animal studies, based on antidromic activation of trigeminothalamic (Craig and Dostrovsky 1991; Price et al. 1978) or spinothalamic cells (Christensen and Perl 1970; Craig and Dostrovsky 2001; Dostrovsky and Craig 1996; Kumazawa et al. 1975), the finding of second-order warmth-specif ...
Evidence of a Specific Spinal Pathway for the
... In contrast, in animal studies, based on antidromic activation of trigeminothalamic (Craig and Dostrovsky 1991; Price et al. 1978) or spinothalamic cells (Christensen and Perl 1970; Craig and Dostrovsky 2001; Dostrovsky and Craig 1996; Kumazawa et al. 1975), the finding of second-order warmth-specif ...
... In contrast, in animal studies, based on antidromic activation of trigeminothalamic (Craig and Dostrovsky 1991; Price et al. 1978) or spinothalamic cells (Christensen and Perl 1970; Craig and Dostrovsky 2001; Dostrovsky and Craig 1996; Kumazawa et al. 1975), the finding of second-order warmth-specif ...
No Slide Title
... Muscle contraction mechanisms: recruitment : activation of an increasing number of motor units within a muscle on contraction ...
... Muscle contraction mechanisms: recruitment : activation of an increasing number of motor units within a muscle on contraction ...
Postoperative Left Prefrontal Repetitive Transcranial Magnetic
... published studies on the effects of rTMS on pain perception. However, most other TMS/pain studies have examined the effects of motor cortex stimulation on pain perception. The motor cortex is more excitable than prefrontal cortex.37,38 Therefore, a higher dose may be necessary to achieve desired eff ...
... published studies on the effects of rTMS on pain perception. However, most other TMS/pain studies have examined the effects of motor cortex stimulation on pain perception. The motor cortex is more excitable than prefrontal cortex.37,38 Therefore, a higher dose may be necessary to achieve desired eff ...
Recruitment properties of intramuscular and nerve
... synaptic inputs [1], [2]. Normally, the smaller motoneurons innervating small numbers of slow, fatigue-resistant muscle fibers are recruited first [3]. They provide stable and finely controlled force for small, precise, and frequently needed movements. The larger motoneurons innervating larger numbe ...
... synaptic inputs [1], [2]. Normally, the smaller motoneurons innervating small numbers of slow, fatigue-resistant muscle fibers are recruited first [3]. They provide stable and finely controlled force for small, precise, and frequently needed movements. The larger motoneurons innervating larger numbe ...
Rubin, 2007
... The ability of plant alkaloids and animal venoms to affect nervous system function has been known for millennia. People throughout the world have taken advantage of these effects to paralyze prey, kill enemies, keep alert, and enter spiritual states. But an understanding of how neuroactive chemicals ...
... The ability of plant alkaloids and animal venoms to affect nervous system function has been known for millennia. People throughout the world have taken advantage of these effects to paralyze prey, kill enemies, keep alert, and enter spiritual states. But an understanding of how neuroactive chemicals ...
Connecting cortex to machines: recent advances in brain interfaces
... been successfully used for chronic recording. For example, individual electrodes in the Utah electrode12 are tapered to a tip, with diameters <90 µm at their base, and they penetrate only 1–2 mm into the brain; these electrodes record for long periods in monkey cortex15,16. Intracortical arrays are ...
... been successfully used for chronic recording. For example, individual electrodes in the Utah electrode12 are tapered to a tip, with diameters <90 µm at their base, and they penetrate only 1–2 mm into the brain; these electrodes record for long periods in monkey cortex15,16. Intracortical arrays are ...
Chapter 14:
... chemicals, severe pressure, and cold. • Threshold of eliciting receptor response must be balanced to warn of damage, but not be affected by normal activity. ...
... chemicals, severe pressure, and cold. • Threshold of eliciting receptor response must be balanced to warn of damage, but not be affected by normal activity. ...
Touch Pressure & Pain
... • Thalamus sends pain signals to parietal, frontal lobes and limbic system. • Brain interprets pain and sends messages to the spinal cord to either close or open gates. If more gates open, pain gets worse. If gates close, less pain experienced. • Endorphins can be released which inhibit the release ...
... • Thalamus sends pain signals to parietal, frontal lobes and limbic system. • Brain interprets pain and sends messages to the spinal cord to either close or open gates. If more gates open, pain gets worse. If gates close, less pain experienced. • Endorphins can be released which inhibit the release ...