Activity Regulates the Incidence of Heteronymous Sensory
... sensory activation of synergistic motor pools and their recipient muscles has a role in stabilizing joint trajectories (Burkholder and Nicols, 2000). The precision and evolutionary fidelity evident in this weighted sensory-motor connectivity matrix imply selectivity in synapse formation, yet the cel ...
... sensory activation of synergistic motor pools and their recipient muscles has a role in stabilizing joint trajectories (Burkholder and Nicols, 2000). The precision and evolutionary fidelity evident in this weighted sensory-motor connectivity matrix imply selectivity in synapse formation, yet the cel ...
Neural Coding and Auditory Perception
... neighboring frequencies [1]. CN neurons were said to be phase-sensitive (PS) if their rate response changed more with Huffman phase manipulations than do AN fibers at comparable stimulus levels. About one-third of our CN neurons were PS; a majority of these (consisting mostly of primary-like and cho ...
... neighboring frequencies [1]. CN neurons were said to be phase-sensitive (PS) if their rate response changed more with Huffman phase manipulations than do AN fibers at comparable stimulus levels. About one-third of our CN neurons were PS; a majority of these (consisting mostly of primary-like and cho ...
... coding social behavior that is fundamentally influenced by the perceptual salience of the interactors (Inderbitzin et al., 2009, submitted). The established psychological concept of the ’vividness effect’ (Frijda, 1988) states that a more salient stimulus construct induces altered cognitive and beh ...
An ancestral axial twist explains the contralateral forebrain and the
... As we will see below (section 4) all extant and fossil vertebrates possess an optic chiasm. The model is therefore based on the hypothesis that an ancestor of all vertebrates has turned on its left side, by a 90° turn about the body axis (i.e. anti-clockwise from the perspective of the embryo). As t ...
... As we will see below (section 4) all extant and fossil vertebrates possess an optic chiasm. The model is therefore based on the hypothesis that an ancestor of all vertebrates has turned on its left side, by a 90° turn about the body axis (i.e. anti-clockwise from the perspective of the embryo). As t ...
Natural Stimulation of the Nonclassical Receptive Field Increases
... The terms in braces define the activity fraction of the neuron across the stimulus set (Tovee et al., 1993). It is easy to anticipate the asymptotic behavior of the activity fraction (consider the expanded form of the activity fraction in the middle expression of Eq. 2). If a neuron were nonselectiv ...
... The terms in braces define the activity fraction of the neuron across the stimulus set (Tovee et al., 1993). It is easy to anticipate the asymptotic behavior of the activity fraction (consider the expanded form of the activity fraction in the middle expression of Eq. 2). If a neuron were nonselectiv ...
The Nervous System Introduction Organization of Neural Tissue
... Prefrontal cortex Working memory for spatial tasks Executive area for task management Working memory for object-recall tasks Solving complex, multitask problems ...
... Prefrontal cortex Working memory for spatial tasks Executive area for task management Working memory for object-recall tasks Solving complex, multitask problems ...
Chapter 8 – Perceiving Motion
... occurs anytime motor signal is sent to the eye muscles indicates that a signal has been sent from the brain to move the eye. - The cds reached a hypothetical structure the comparator which relays information back to the brain that eye is moving *if there is no movement of an image across the retina ...
... occurs anytime motor signal is sent to the eye muscles indicates that a signal has been sent from the brain to move the eye. - The cds reached a hypothetical structure the comparator which relays information back to the brain that eye is moving *if there is no movement of an image across the retina ...
Learning a Precedence Effect-Like Weighting Function for the Generalized Cross-Correlation Framework
... Because direct path sound arrives before any correlated reflections, initial onsets will tend to be less corrupted by reverberation than subsequent sounds. The generality of this argument suggests that other animals should also exhibit the precedence effect, and evidence for the effect has been foun ...
... Because direct path sound arrives before any correlated reflections, initial onsets will tend to be less corrupted by reverberation than subsequent sounds. The generality of this argument suggests that other animals should also exhibit the precedence effect, and evidence for the effect has been foun ...
Creutzfeldt-Jakob Disease (CJD) Risk Assessment and
... CJD is scheduled as a notifiable disease in all Australian States and Territories and notification is required to the CDCD for all cases in which a strong clinical suspicion for CJD exists or on receipt of confirmatory pathology. Since there is no test to reliably detect CJD prior to onset of sympto ...
... CJD is scheduled as a notifiable disease in all Australian States and Territories and notification is required to the CDCD for all cases in which a strong clinical suspicion for CJD exists or on receipt of confirmatory pathology. Since there is no test to reliably detect CJD prior to onset of sympto ...
The Spinal Nerve
... Ipsilateral reflex arcs occurs on same side of body as stimulus Stretch, tendon, and withdrawal reflexes Crossed extensor reflexes Involve a contralateral reflex arc (occur on side opposite stimulus) Occur simultaneously, coordinated with flexor reflex ...
... Ipsilateral reflex arcs occurs on same side of body as stimulus Stretch, tendon, and withdrawal reflexes Crossed extensor reflexes Involve a contralateral reflex arc (occur on side opposite stimulus) Occur simultaneously, coordinated with flexor reflex ...
Differentiating Noxious- and Innocuous
... been in dispute. Human imaging studies demonstrate activation of SI and SII associated with painful stimuli, but results have been variable, and the functional relevance of any such activation is uncertain. The present study addresses this issue by testing whether the time course of somatosensory ac ...
... been in dispute. Human imaging studies demonstrate activation of SI and SII associated with painful stimuli, but results have been variable, and the functional relevance of any such activation is uncertain. The present study addresses this issue by testing whether the time course of somatosensory ac ...
Eye Movements - Center for Neural Science
... one muscle of each antagonistic pair must relax when the other contracts. During movements in which the muscle under study relaxes, the motor neurons innervating that muscle pause during the movement and then resume firing at a reduced rate appropriate for the new orbital position of the eye. Perhap ...
... one muscle of each antagonistic pair must relax when the other contracts. During movements in which the muscle under study relaxes, the motor neurons innervating that muscle pause during the movement and then resume firing at a reduced rate appropriate for the new orbital position of the eye. Perhap ...
The Emergence of Selective Attention through - laral
... generating all the stimuli. This effect is robust and does not depend on the specific characteristics of the neural architecture, or of the training set. The obtained results demonstrate for the first time, to our knowledge, that selective attention can emerge in a neural network model as a result o ...
... generating all the stimuli. This effect is robust and does not depend on the specific characteristics of the neural architecture, or of the training set. The obtained results demonstrate for the first time, to our knowledge, that selective attention can emerge in a neural network model as a result o ...
Functional Clustering Drives Encoding Improvement in a
... In Vivo Monitoring of Neuronal Firing Rates with TwoPhoton Calcium Imaging In vivo two-photon calcium imaging allows simultaneous monitoring of somatic calcium transients, induced by neuronal firing, in hundreds of neurons in the vertebrate brain [3,5,18,26,29]. We used this method to monitor correl ...
... In Vivo Monitoring of Neuronal Firing Rates with TwoPhoton Calcium Imaging In vivo two-photon calcium imaging allows simultaneous monitoring of somatic calcium transients, induced by neuronal firing, in hundreds of neurons in the vertebrate brain [3,5,18,26,29]. We used this method to monitor correl ...
Mechanisms of Visual Attention in the Human Cortex
... using functional magnetic resonance imaging (Kastner et al 1997, 1998a). In these studies, subjects were presented with images of colorful, complex stimuli in four nearby locations of the upper right quadrant of the visual field while they maintained fixation. Fixation was ensured by having subjects ...
... using functional magnetic resonance imaging (Kastner et al 1997, 1998a). In these studies, subjects were presented with images of colorful, complex stimuli in four nearby locations of the upper right quadrant of the visual field while they maintained fixation. Fixation was ensured by having subjects ...
Neural Correlates of Perceived Brightness in the Retina, Lateral
... Figure 2. Spatial configurations of the stimuli. Stimuli were presented so that the central area of the stimulus was centered over the receptive field (shown as a gray oval). Stimuli consisted of the following: ( 1) constant gray center with luminance-modulated flanks (arrows) that resulted in the p ...
... Figure 2. Spatial configurations of the stimuli. Stimuli were presented so that the central area of the stimulus was centered over the receptive field (shown as a gray oval). Stimuli consisted of the following: ( 1) constant gray center with luminance-modulated flanks (arrows) that resulted in the p ...
Chapter 3
... – precisely localization & identification – memories of our perceptions are stored in the cortex • Sensation is any stimuli the body is aware of – Chemoreceptors, thermoreceptors, nociceptors, baroreceptors – What are we not aware of? • X-rays, ultra high frequency sound waves, UV light – We have no ...
... – precisely localization & identification – memories of our perceptions are stored in the cortex • Sensation is any stimuli the body is aware of – Chemoreceptors, thermoreceptors, nociceptors, baroreceptors – What are we not aware of? • X-rays, ultra high frequency sound waves, UV light – We have no ...
Signature - UNE Faculty/Staff Index Page
... Various nuclei make up thalamus, each sending information to specific regions Medial Geniculate Nuclei – auditory information to auditory cortex Lateral Geniculate Nuclei – visual information to V1 Identify the structures of the hemi-sected brain: corpus callosum ...
... Various nuclei make up thalamus, each sending information to specific regions Medial Geniculate Nuclei – auditory information to auditory cortex Lateral Geniculate Nuclei – visual information to V1 Identify the structures of the hemi-sected brain: corpus callosum ...
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... also suggests that parietal lobe dysfunction is a characteristic feature of GRN mutation and differentiates this group from other patients with FTLD. MR imaging showed evidence of strikingly asymmetrical atrophy with the frontal, temporal and parietal lobes all affected. Both right- and left-sided p ...
... also suggests that parietal lobe dysfunction is a characteristic feature of GRN mutation and differentiates this group from other patients with FTLD. MR imaging showed evidence of strikingly asymmetrical atrophy with the frontal, temporal and parietal lobes all affected. Both right- and left-sided p ...
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.