Eye fields in the frontal lobes of primates
... Two eye fields have been identified in the frontal lobes of primates: one is situated dorsomedially within the frontal cortex and will be referred to as the eye field within the dorsomedial frontal cortex ŽDMFC.; the other resides dorsolaterally within the frontal cortex and is commonly referred to ...
... Two eye fields have been identified in the frontal lobes of primates: one is situated dorsomedially within the frontal cortex and will be referred to as the eye field within the dorsomedial frontal cortex ŽDMFC.; the other resides dorsolaterally within the frontal cortex and is commonly referred to ...
Comparison of Primate Prefrontal and Inferior Temporal
... fundamental for normal cognition because it gives meaning to our sensory environment. Several recent studies have reported neuronal correlates of visual categories in two interconnected cortical areas involved in visual recognition, memory, and other visual functions: the inferior temporal cortex (I ...
... fundamental for normal cognition because it gives meaning to our sensory environment. Several recent studies have reported neuronal correlates of visual categories in two interconnected cortical areas involved in visual recognition, memory, and other visual functions: the inferior temporal cortex (I ...
Topographic Maps in Human Frontal Cortex Revealed in Memory
... first the linear trend in the fMRI time series was subtracted for each voxel, and the time series was transformed into percent signal modulation by dividing it by its mean intensity. A mean time series for each voxel was calculated from the six to eight identical scanning runs within a session. For ...
... first the linear trend in the fMRI time series was subtracted for each voxel, and the time series was transformed into percent signal modulation by dividing it by its mean intensity. A mean time series for each voxel was calculated from the six to eight identical scanning runs within a session. For ...
Chapter 16 - MBFys Home Page
... body position. Another brainstem center, the red nucleus, controls movements of the arms; also in the brainstem, the superior colliculus contains upper motor neurons that initiate orienting movements of the head and eyes. The motor and “premotor” areas of the frontal lobe, in contrast, are responsib ...
... body position. Another brainstem center, the red nucleus, controls movements of the arms; also in the brainstem, the superior colliculus contains upper motor neurons that initiate orienting movements of the head and eyes. The motor and “premotor” areas of the frontal lobe, in contrast, are responsib ...
4. Conclusions and Perspectives - RuCCS
... correlates of mental imagery. In order to determine if visual mental imagery can modulate visual cortex excitability, Sparing et al. (2002) stimulated the primary visual cortex of 20 healthy blindfolded participants with TMS. Participants performed a visual imagery task and an auditory control task. ...
... correlates of mental imagery. In order to determine if visual mental imagery can modulate visual cortex excitability, Sparing et al. (2002) stimulated the primary visual cortex of 20 healthy blindfolded participants with TMS. Participants performed a visual imagery task and an auditory control task. ...
Schema Theory
... of sense-data, schema theory posits an active and selective process of schema formation (cf. Piaget’s notion of assimilation) which in some sense constructs reality as much as it embodies it. More generally, cognitive psychology views schemas as cognitive structures built up in the course of interac ...
... of sense-data, schema theory posits an active and selective process of schema formation (cf. Piaget’s notion of assimilation) which in some sense constructs reality as much as it embodies it. More generally, cognitive psychology views schemas as cognitive structures built up in the course of interac ...
Spinal Cord Terminations of the Medial Wall Motor Areas in
... view, the medial wall is unfolded and reflected upward to reveal the cingulate sulcus. The anterior bank of the central sulcus is also unfolded. A dashed line marks the fundus of each unfolded sulcus. The centers of the different cortical motor areas are designated by the circled letters. The bounda ...
... view, the medial wall is unfolded and reflected upward to reveal the cingulate sulcus. The anterior bank of the central sulcus is also unfolded. A dashed line marks the fundus of each unfolded sulcus. The centers of the different cortical motor areas are designated by the circled letters. The bounda ...
Structure of Receptive Fields in Area 3b of Primary Somatosensory
... was stimulated is the overall mean firing rate (because all other sites were stimulated randomly) plus the effect of the specific region under consideration. For example, if the subregion was strongly inhibitory, then the mean firing rate during stimulation of that subregion was much lower than the ...
... was stimulated is the overall mean firing rate (because all other sites were stimulated randomly) plus the effect of the specific region under consideration. For example, if the subregion was strongly inhibitory, then the mean firing rate during stimulation of that subregion was much lower than the ...
LFP Power Spectra in V1 Cortex: The Graded Effect of Stimulus
... and spike responses from these recordings were analyzed to clarify the conditions under which gamma-band components of the LFP specifically distinguish themselves from the other LFP components as well as to explore what information the LFP can lend to our understanding of the spike responses when th ...
... and spike responses from these recordings were analyzed to clarify the conditions under which gamma-band components of the LFP specifically distinguish themselves from the other LFP components as well as to explore what information the LFP can lend to our understanding of the spike responses when th ...
Visual Adaptation: Physiology, Mechanisms, and Functional Benefits
... seen over a wide range of time scales, from effects arising during development to those driven by the most recent sensory input. A particularly striking and easily studied form of plasticity is that caused by adaptation—the sensory experience of the preceding tens of milliseconds to minutes. The per ...
... seen over a wide range of time scales, from effects arising during development to those driven by the most recent sensory input. A particularly striking and easily studied form of plasticity is that caused by adaptation—the sensory experience of the preceding tens of milliseconds to minutes. The per ...
The Optic Tectum in Fishes
... images binocularly to help determine the distance of objects like prey, which fish have been shown to do. Neurons that can be driven via either eye, have been found in the tectum of goldfish and trout, but their large and diffuse receptive fields seem unsuited to the demands of stereoscopic depth pe ...
... images binocularly to help determine the distance of objects like prey, which fish have been shown to do. Neurons that can be driven via either eye, have been found in the tectum of goldfish and trout, but their large and diffuse receptive fields seem unsuited to the demands of stereoscopic depth pe ...
FACIAL NERVE TRAUMA
... If loss of function is noted following surgery, wait 2-3 hours and then re-evaluate the patient. This should be ample time for an anesthetic to wear off – Waited time and still paralysis • Unsure of nerve integrity – re-explore as soon as possible • Integrity of nerve known to be intact – High dose ...
... If loss of function is noted following surgery, wait 2-3 hours and then re-evaluate the patient. This should be ample time for an anesthetic to wear off – Waited time and still paralysis • Unsure of nerve integrity – re-explore as soon as possible • Integrity of nerve known to be intact – High dose ...
The organization of the central control of micturition in cats and
... and premotor cortex, passes through the internal capsule, cerebral peduncle and pyramidal tract to cross via its decussation at the transition between brainstem and spinal cord. The fibers terminate on premotor interneurons and motoneurons in the lateral ...
... and premotor cortex, passes through the internal capsule, cerebral peduncle and pyramidal tract to cross via its decussation at the transition between brainstem and spinal cord. The fibers terminate on premotor interneurons and motoneurons in the lateral ...
SpinalCord_Nerves_Plexus_Reflexes
... to a nearby sympathetic ganglion. Because these preganglionic axons are myelinated, this branch has a light color and is therefore known as the white ramus. A sympathetic nerve contains preganglionic and postganglionic fibers innervating structures in the thoracic cavity. ...
... to a nearby sympathetic ganglion. Because these preganglionic axons are myelinated, this branch has a light color and is therefore known as the white ramus. A sympathetic nerve contains preganglionic and postganglionic fibers innervating structures in the thoracic cavity. ...
Time-Dependent Activation of Feed-Forward Inhibition in
... inhibition impinges on 2 separate dendritic fields (B and C, respectively). B: looming stimuli consisted of black squares on a bright background approaching at a constant speed v with half-size l. The angle subtended by the object at the retina is denoted by !. ...
... inhibition impinges on 2 separate dendritic fields (B and C, respectively). B: looming stimuli consisted of black squares on a bright background approaching at a constant speed v with half-size l. The angle subtended by the object at the retina is denoted by !. ...
physiological plasticity in auditory cortex: rapid induction by learning
... of two stimuli permits the inference that neural processes underlying learning have developed plasticity. Most contemporary studies of physiological plasticity during learning employ a type of associative training first discovered and elucidated by Pavlov (1927), called "classical conditioning". In ...
... of two stimuli permits the inference that neural processes underlying learning have developed plasticity. Most contemporary studies of physiological plasticity during learning employ a type of associative training first discovered and elucidated by Pavlov (1927), called "classical conditioning". In ...
Voluntary Movement: The Primary Motor Cortex
... system can learn new behavioral strategies or new reactions to familiar stimuli to improve behavioral outcomes, and it can learn new skills to cope with predictable variations and perturbations of the environment. Thus the neural control of voluntary movement involves far more than simply generating ...
... system can learn new behavioral strategies or new reactions to familiar stimuli to improve behavioral outcomes, and it can learn new skills to cope with predictable variations and perturbations of the environment. Thus the neural control of voluntary movement involves far more than simply generating ...
Separate Representations of Target and Timing Cue Locations in
... stimulus that encodes the target position and also encode the information available from the timing cue. This could pose a challenge to the oculomotor system since the representation of the timing stimulus location in one brain area might be interpreted by downstream neurons as a competing motor pla ...
... stimulus that encodes the target position and also encode the information available from the timing cue. This could pose a challenge to the oculomotor system since the representation of the timing stimulus location in one brain area might be interpreted by downstream neurons as a competing motor pla ...
The encoding and decoding of com-
... that, in comparison with pure linear readouts used previously, the proposed system provides a robust, fast and highly compact representation of visual input. We then generalized this optimized encoding-decoding paradigm to deal with a number of robotics application in real-world tasks to investigate ...
... that, in comparison with pure linear readouts used previously, the proposed system provides a robust, fast and highly compact representation of visual input. We then generalized this optimized encoding-decoding paradigm to deal with a number of robotics application in real-world tasks to investigate ...
PDF
... tures. Also, at some sites, the evoked movement was weak, and thus no final posture could be convincingly demonstrated. Stimulation of eight sites anterior to the arcuate sulcus, presumably in the frontal eye fields, evoked saccadic eye movements but not limb postures. Stimulation of nine sites post ...
... tures. Also, at some sites, the evoked movement was weak, and thus no final posture could be convincingly demonstrated. Stimulation of eight sites anterior to the arcuate sulcus, presumably in the frontal eye fields, evoked saccadic eye movements but not limb postures. Stimulation of nine sites post ...
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.