Part 2 - Dimon Institute
... whole. This process is far too complex to be directed piece by piece. We never just contract one muscle; the entire support system must constantly adjust itself in relation to whatever we are doing as the background against which the specific contraction takes place. This overall support, which prod ...
... whole. This process is far too complex to be directed piece by piece. We never just contract one muscle; the entire support system must constantly adjust itself in relation to whatever we are doing as the background against which the specific contraction takes place. This overall support, which prod ...
Sensory Systems in the Control of Movement
... of movement types, amplitudes and velocities, but the problem here was the relatively small database. Until recently, recordings were made with single or small numbers of implanted microelectrodes that only remained viable for a few days, so the yield per animal was low. Therefore, the ensemble affe ...
... of movement types, amplitudes and velocities, but the problem here was the relatively small database. Until recently, recordings were made with single or small numbers of implanted microelectrodes that only remained viable for a few days, so the yield per animal was low. Therefore, the ensemble affe ...
Neural Encoding I: Firing Rates and Spike Statistics
... order as the average interval between spikes. Neural responses can vary from trial to trial even when the same stimulus is presented repeatedly. There are many potential sources of this variability including variable levels of arousal and attention, randomness associated with various biophysical pro ...
... order as the average interval between spikes. Neural responses can vary from trial to trial even when the same stimulus is presented repeatedly. There are many potential sources of this variability including variable levels of arousal and attention, randomness associated with various biophysical pro ...
A model for experience-dependent changes in the responses of inferotemporal neurons
... region (also known as the magnocellular nucleus basalis of Meynert) in the basal forebrain (Mesulam et al 1983). Cholinergic antagonists have been shown to increase the average visual response of all recorded IT neurons during a DMS task with delay (Miller and Desimone 1993, Dudkin et al 1994). Fina ...
... region (also known as the magnocellular nucleus basalis of Meynert) in the basal forebrain (Mesulam et al 1983). Cholinergic antagonists have been shown to increase the average visual response of all recorded IT neurons during a DMS task with delay (Miller and Desimone 1993, Dudkin et al 1994). Fina ...
Saccade performance in the nasal and temporal
... of the right eye and the lateral rectus of the left eye. It is assumed that the OPNs synchronize the activity of the IBNs and EBNs before the saccade starts and it is important for the velocity of the of the saccade that the lateral and medial rectus of the left and right eyes, respectively, are in ...
... of the right eye and the lateral rectus of the left eye. It is assumed that the OPNs synchronize the activity of the IBNs and EBNs before the saccade starts and it is important for the velocity of the of the saccade that the lateral and medial rectus of the left and right eyes, respectively, are in ...
PDF Mynark - American Kinesiology Association
... Two basic experimental designs have been used to stimulate and measure the spinal stretch reflex (SSR) arc: (a) the traditional tendon-tap methodology and (b) the Hoffmann or H-reflex. Measuring the SSR via the tendon-tap involves a mechanical perturbation to the tendon of the target muscle. EMG act ...
... Two basic experimental designs have been used to stimulate and measure the spinal stretch reflex (SSR) arc: (a) the traditional tendon-tap methodology and (b) the Hoffmann or H-reflex. Measuring the SSR via the tendon-tap involves a mechanical perturbation to the tendon of the target muscle. EMG act ...
(2007) The most superficial sublamina of rat superior colluculus
... penetration, the SC surface was localized with the microelectrode advancing through the overlying cortex and hippocampus in the following manner. As the electrode approached the SC, complex spikes of high amplitude characteristic of hippocampus activity were followed by complete silence over the nex ...
... penetration, the SC surface was localized with the microelectrode advancing through the overlying cortex and hippocampus in the following manner. As the electrode approached the SC, complex spikes of high amplitude characteristic of hippocampus activity were followed by complete silence over the nex ...
optimal feedback control and the neural basis of volitional motor
... a crucial role for volitional, goal-directed tasks. An important problem is to understand the links between motor behaviour, limb mechanics and neural control. How do neural circuits create purposeful movements from the complex, nonlinear musculoskeletal system? Does the neural activity of M1 reflec ...
... a crucial role for volitional, goal-directed tasks. An important problem is to understand the links between motor behaviour, limb mechanics and neural control. How do neural circuits create purposeful movements from the complex, nonlinear musculoskeletal system? Does the neural activity of M1 reflec ...
The role of neuronal synchronization in selective attention
... change had occurred. This finding suggests that the processing or the signalling of a sensory change is more efficient when it is handled by an area that is engaged in enhanced gamma-band synchronization [6]. Importantly, the influence of local synchronization of behavioural responses was spatiall ...
... change had occurred. This finding suggests that the processing or the signalling of a sensory change is more efficient when it is handled by an area that is engaged in enhanced gamma-band synchronization [6]. Importantly, the influence of local synchronization of behavioural responses was spatiall ...
Differential Impairment of Individuated Finger Movements in
... Medicine and Dentistry, and the 4Brain Injury Rehabilitation Program, St. Mary’s Hospital, Rochester, New York 14642 Submitted 10 February 2003; accepted in final form 24 March 2003 ...
... Medicine and Dentistry, and the 4Brain Injury Rehabilitation Program, St. Mary’s Hospital, Rochester, New York 14642 Submitted 10 February 2003; accepted in final form 24 March 2003 ...
Reconciling simplicity and likelihood principles in perceptual
... input will be organized into the most probable distal object or event consistent with that input. The second, initiated by Wertheimer and developed by other Gestalt psychologists, advocates what Pomerantz and Kubovy (1986) call the simplicity principle: The perceptual system is viewed as finding the ...
... input will be organized into the most probable distal object or event consistent with that input. The second, initiated by Wertheimer and developed by other Gestalt psychologists, advocates what Pomerantz and Kubovy (1986) call the simplicity principle: The perceptual system is viewed as finding the ...
C fibres (dull pain)
... The conclusion was drawn that the pain experienced by these men was blocked by emotional factors. The physical injuries that these men had received was an escape from the life-threatening environment of battle to the safety of a hospital, or even release form the war. This relationship suggests th ...
... The conclusion was drawn that the pain experienced by these men was blocked by emotional factors. The physical injuries that these men had received was an escape from the life-threatening environment of battle to the safety of a hospital, or even release form the war. This relationship suggests th ...
Duration Tuning across Vertebrates
... the model DTN. In our initial (default) model, the onset-responding presynaptic neuron was activated 10 ms after stimulus onset and the offset-responding presynaptic neuron was activated 6 ms after stimulus offset (see Fig. 3E). We also explored the effect of input latency on duration tuning by runn ...
... the model DTN. In our initial (default) model, the onset-responding presynaptic neuron was activated 10 ms after stimulus onset and the offset-responding presynaptic neuron was activated 6 ms after stimulus offset (see Fig. 3E). We also explored the effect of input latency on duration tuning by runn ...
A Comparison of Spiking Statistics in Motion Sensing Neurones of
... scaled so that the quasi-Poisson curve spans the abscissa; this change in scale reflects the larger spike counts obtained in larger time windows. The right endpoint of the quasi-Poisson curve represents the (estimated) maximum spike count for that time window given the refractory period of the neuro ...
... scaled so that the quasi-Poisson curve spans the abscissa; this change in scale reflects the larger spike counts obtained in larger time windows. The right endpoint of the quasi-Poisson curve represents the (estimated) maximum spike count for that time window given the refractory period of the neuro ...
A Pain in the Ear: The Radiology of Otalgia
... around the right internal carotid artery and internal jugular vein and in the stylomandibular tunnel (wavy arrows). Compare to the normal left side. The pinna is edematous (straight arrows). This image was obtained at a level below the EAC. B, Axial CT image (bone algorithm) shows erosion of the mas ...
... around the right internal carotid artery and internal jugular vein and in the stylomandibular tunnel (wavy arrows). Compare to the normal left side. The pinna is edematous (straight arrows). This image was obtained at a level below the EAC. B, Axial CT image (bone algorithm) shows erosion of the mas ...
Accelerating axonal growth promotes motor
... peripheral but not the central nervous system can reactivate intrinsic growth programs to enable nerve regeneration, and functional recovery can be achieved, provided injured axons are aligned with their former pathways and close to their targets (4). However, proximal nerve lesions, and even more s ...
... peripheral but not the central nervous system can reactivate intrinsic growth programs to enable nerve regeneration, and functional recovery can be achieved, provided injured axons are aligned with their former pathways and close to their targets (4). However, proximal nerve lesions, and even more s ...
Possible cues driving context-specific adaptation of optocollic reflex
... REFLEXES, once believed to be “hard-wired,” turned out to be extremely variable during the preparation, realization, and aftermath of a given motor behavior. This variability may correspond in some cases to mechanisms defined as contextspecific adaptation by Shelhamer and Clendaniel (2002). To quote ...
... REFLEXES, once believed to be “hard-wired,” turned out to be extremely variable during the preparation, realization, and aftermath of a given motor behavior. This variability may correspond in some cases to mechanisms defined as contextspecific adaptation by Shelhamer and Clendaniel (2002). To quote ...
Allochiria
Allochiria (from the Greek meaning ""other hand"") is a neurological disorder in which the patient responds to stimuli presented to one side of their body as if the stimuli had been presented at the opposite side. It is associated with spatial transpositions, usually symmetrical, of stimuli from one side of the body (or of the space) to the opposite one. Thus a touch to the left arm will be reported as a touch to the right arm, which is also known as somatosensory allochiria. If the auditory or visual senses are affected, sounds (a person's voice for instance) will be reported as being heard on the opposite side to that on which they occur and objects presented visually will be reported as having been presented on the opposite side. Often patients may express allochiria in their drawing while copying an image. Allochiria often co-occurs with unilateral neglect and, like hemispatial neglect, the disorder arises commonly from damage to the right parietal lobe.Allochiria is often confused with alloesthesia, also known as false allochiria. True allochiria is a symptom of dyschiria and unilateral neglect. Dyschiria is a disorder in the localization of sensation due to various degrees of dissociation and cause impairment in one side causing the inability to tell which side of the body was touched.