reviews - Center for Complex Systems and Brain Sciences
... detectors that respond best to those features that are present at the locations visited by observers while freeviewing images50,51. For instance, Zetzsche et al.50,52 showed using an eye-tracking device how the eyes preferentially fixate regions with multiple superimposed orientations such as corner ...
... detectors that respond best to those features that are present at the locations visited by observers while freeviewing images50,51. For instance, Zetzsche et al.50,52 showed using an eye-tracking device how the eyes preferentially fixate regions with multiple superimposed orientations such as corner ...
Large-Scale Functional Connectivity in Associative Learning
... Altered converging effects on auditory cortex (AC) from the two parallel paths were noted from the ventral division of medial geniculate (MGV), which is considered a lemniscal structure, and the medial division of the medial geniculate nucleus (MGM), which is considered extralemniscal. Effects from ...
... Altered converging effects on auditory cortex (AC) from the two parallel paths were noted from the ventral division of medial geniculate (MGV), which is considered a lemniscal structure, and the medial division of the medial geniculate nucleus (MGM), which is considered extralemniscal. Effects from ...
String Art: Axon Tracts in the Spinal Cord Spinal reflex arcs
... Note that all of the fibres to muscles in the upper and lower limbs cross at the pyramidal decussation. Fibres going to the axial muscles (about 15% of corticospinal fibres) remain uncrossed, travel in the anterior corticospinal tract and then supply motor neurons on both sides of the spinal cord. ...
... Note that all of the fibres to muscles in the upper and lower limbs cross at the pyramidal decussation. Fibres going to the axial muscles (about 15% of corticospinal fibres) remain uncrossed, travel in the anterior corticospinal tract and then supply motor neurons on both sides of the spinal cord. ...
Descartes` Error: Emotion, Reason, and the Human Brain
... decide on the course of a personal relationship, choose some means to prevent our being penniless in old age, or plan for the life that lies ahead. Emotion and feeling, along with the covert physiological machinery underlying them, assist us with the daunting task of predicting an uncertain future a ...
... decide on the course of a personal relationship, choose some means to prevent our being penniless in old age, or plan for the life that lies ahead. Emotion and feeling, along with the covert physiological machinery underlying them, assist us with the daunting task of predicting an uncertain future a ...
High Intensity Dependence of Auditory Evoked Dipole Source
... which is thought to reflect the level of central serotonergic neurotransmission (Hegerl and Juckel 1993). For this purpose, we recorded auditory evoked potentials (AEP) and used the method of dipole source analysis. An old debate exists on the dependence of the amplitude of sensory evoked potentials ...
... which is thought to reflect the level of central serotonergic neurotransmission (Hegerl and Juckel 1993). For this purpose, we recorded auditory evoked potentials (AEP) and used the method of dipole source analysis. An old debate exists on the dependence of the amplitude of sensory evoked potentials ...
Visual detection deficits following inactivation of the superior colliculus in the cat
... can occur that likely mitigate or otherwise alter any resulting deficits. (2) In some cases, lesions were not restricted to the SC, so deficits may have been due to damage to adjacent nuclei or fiber tracts. (3) Eye position was not monitored in many of the experiments, making it unclear if the obse ...
... can occur that likely mitigate or otherwise alter any resulting deficits. (2) In some cases, lesions were not restricted to the SC, so deficits may have been due to damage to adjacent nuclei or fiber tracts. (3) Eye position was not monitored in many of the experiments, making it unclear if the obse ...
Chapter 36 Locomotion
... nearly a century ago when it was found that removing the cerebral hemispheres in dogs did not abolish walking—decerebrate animals are still able to walk spontaneously. One animal was observed to rear itself up in order to rest its forepaws on a gate at feeding time. It was soon discovered that stepp ...
... nearly a century ago when it was found that removing the cerebral hemispheres in dogs did not abolish walking—decerebrate animals are still able to walk spontaneously. One animal was observed to rear itself up in order to rest its forepaws on a gate at feeding time. It was soon discovered that stepp ...
Functional organization of inferior parietal lobule convexity in the
... intraparietal, lateral and superior temporal sulci and to identify the cortical areas located inside the bank of the various sulci. The properties of neurons recorded from these sites will not be described in the present study. For each penetration site, we identified the properties of single and mul ...
... intraparietal, lateral and superior temporal sulci and to identify the cortical areas located inside the bank of the various sulci. The properties of neurons recorded from these sites will not be described in the present study. For each penetration site, we identified the properties of single and mul ...
Rhythms for Cognition: Communication through
... relation that is optimal for CTC, as has been highlighted in mathematical models (Börgers and Kopell, 2008; Cannon et al., 2014; Gielen et al., 2010). In the new CTC formulation, I propose that entrainment with delay is the general mechanism that sets up phase relations subserving CTC, both for unid ...
... relation that is optimal for CTC, as has been highlighted in mathematical models (Börgers and Kopell, 2008; Cannon et al., 2014; Gielen et al., 2010). In the new CTC formulation, I propose that entrainment with delay is the general mechanism that sets up phase relations subserving CTC, both for unid ...
download file
... 4 Features of sensory input direct receptive-field size and structure In the auditory system, receptive fields are described by tuning curves that quantify neural selectivity for tones over a limited range of frequency and intensity. Several investigators have demonstrated that these receptive fields c ...
... 4 Features of sensory input direct receptive-field size and structure In the auditory system, receptive fields are described by tuning curves that quantify neural selectivity for tones over a limited range of frequency and intensity. Several investigators have demonstrated that these receptive fields c ...
The response of cat visual cortex to flicker stimuli of variable frequency
... electrodes. These RFs had previously been plotted with hand-held stimuli and were all located within 10 ° of the centre of gaze. The intensity (luminance) and duration of the stimuli were 2.2 mW/ 1337 cm2 and 20 µs, respectively. In the first two experiments, the frequency of the flicker stimuli was ...
... electrodes. These RFs had previously been plotted with hand-held stimuli and were all located within 10 ° of the centre of gaze. The intensity (luminance) and duration of the stimuli were 2.2 mW/ 1337 cm2 and 20 µs, respectively. In the first two experiments, the frequency of the flicker stimuli was ...
Spinal Cord and Spinal Nerves
... Spinal Cord Physiology / Motor Tracts Motor info. travels from the brain down the spinal cord to muscles and glands via the; 1. Pyramidal tracts 2. Extrapyramidal tracts ...
... Spinal Cord Physiology / Motor Tracts Motor info. travels from the brain down the spinal cord to muscles and glands via the; 1. Pyramidal tracts 2. Extrapyramidal tracts ...
Spinal Nerves and Nerve Plexus
... Motor info. travels from the brain down the spinal cord to muscles and glands via the; • Pyramidal tracts • Extrapyramidal tracts ...
... Motor info. travels from the brain down the spinal cord to muscles and glands via the; • Pyramidal tracts • Extrapyramidal tracts ...
Pain - mbbsclub.com
... • Also, unlike other sensations, the subjective perception of pain can be influenced by other past or present experiences (for example, heightened pain perception accompanying fear of the dentist or lowered pain perception in an injured athlete during a competitive event). • Pain is detected by pain ...
... • Also, unlike other sensations, the subjective perception of pain can be influenced by other past or present experiences (for example, heightened pain perception accompanying fear of the dentist or lowered pain perception in an injured athlete during a competitive event). • Pain is detected by pain ...
Sensory experience and the formation of a computational map of
... instead topographically related to other biologically relevant features. These higher-level representations are often referred to as computational maps because they are generated as a result of integrative processes that take place within the brain. Computational maps provide a means by which more c ...
... instead topographically related to other biologically relevant features. These higher-level representations are often referred to as computational maps because they are generated as a result of integrative processes that take place within the brain. Computational maps provide a means by which more c ...
Document
... Sensory Pathways Posterior Column Pathway Sensory homunculus Functional map of the primary sensory cortex Distortions occur because area of sensory cortex devoted to particular body region is not proportional to region’s size, but to number of sensory receptors it contains ...
... Sensory Pathways Posterior Column Pathway Sensory homunculus Functional map of the primary sensory cortex Distortions occur because area of sensory cortex devoted to particular body region is not proportional to region’s size, but to number of sensory receptors it contains ...
Neural Integration I: Sensory Pathways and the Somatic Nervous
... Sensory Pathways The Spinothalamic Pathway Provides conscious sensations of poorly localized (“crude”) touch, pressure, pain, and temperature First-order neurons Axons of first-order sensory neurons enter spinal cord and synapse on second-order neurons within posterior gray ...
... Sensory Pathways The Spinothalamic Pathway Provides conscious sensations of poorly localized (“crude”) touch, pressure, pain, and temperature First-order neurons Axons of first-order sensory neurons enter spinal cord and synapse on second-order neurons within posterior gray ...
the functional properties of the light
... not establish the case. Thus, while it is likely that the parietal homotypical cortex plays an important role in what are called associative functions, the neural mechanisms of those associations are still unclear. The second general concept is that the inferior parietal lobule is a higher order pro ...
... not establish the case. Thus, while it is likely that the parietal homotypical cortex plays an important role in what are called associative functions, the neural mechanisms of those associations are still unclear. The second general concept is that the inferior parietal lobule is a higher order pro ...
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.