Age-related Increase in Astrocytes in the Visual Area V2 of the Cat
... Aging has been reported to exert severe impairment on V2 functions, for example, orientation and direction selectivities of the V2 cells show obvious degeneration, accompanied with increased visually driven and spontaneous responses (Yu et al., 2006). V2 has even been reported to be affected more se ...
... Aging has been reported to exert severe impairment on V2 functions, for example, orientation and direction selectivities of the V2 cells show obvious degeneration, accompanied with increased visually driven and spontaneous responses (Yu et al., 2006). V2 has even been reported to be affected more se ...
- Stem-cell and Brain Research Institute
... monkeys (Macaca fascicularis). Some of the results from these injections have already been reported in another article (Falchier et al., 2002). Central area 17 injections were in the cortex subserving 0º–2º in the lower visual field (M85RHDY and M85RHFsB). Injections aimed at the peripheral represen ...
... monkeys (Macaca fascicularis). Some of the results from these injections have already been reported in another article (Falchier et al., 2002). Central area 17 injections were in the cortex subserving 0º–2º in the lower visual field (M85RHDY and M85RHFsB). Injections aimed at the peripheral represen ...
Visual Fields
... similar features. During automated perimetry testing, the patient’s non-tested eye is covered while the uncovered eye views a small fixation target located centrally in the visual field instrument. While the patient continues to view the fixation target, visual stimuli are presented throughout his o ...
... similar features. During automated perimetry testing, the patient’s non-tested eye is covered while the uncovered eye views a small fixation target located centrally in the visual field instrument. While the patient continues to view the fixation target, visual stimuli are presented throughout his o ...
The Motor System of the Cortex and the Brain Stem
... When you point, you align your finger with the retinal location of the target Slide 14. When you point to something, you orient your eyes so that the image of the target falls on the fovea of each eye. Then you orient your arm so that your fingertip falls on the line running from the target to the f ...
... When you point, you align your finger with the retinal location of the target Slide 14. When you point to something, you orient your eyes so that the image of the target falls on the fovea of each eye. Then you orient your arm so that your fingertip falls on the line running from the target to the f ...
Impaired synaptic transmission was also observed in the DG in
... MD, PhD) showed that, using rat models to represent clinical hyponatremia accompanying adrenal insufficiency, reduced serum [Na+] was associated with selective apoptosis in the DG. Nine days after ADX, apoptotic cells were observed in the DG of rats whose serum [Na+] was <125 mEq/L (moderate hyponat ...
... MD, PhD) showed that, using rat models to represent clinical hyponatremia accompanying adrenal insufficiency, reduced serum [Na+] was associated with selective apoptosis in the DG. Nine days after ADX, apoptotic cells were observed in the DG of rats whose serum [Na+] was <125 mEq/L (moderate hyponat ...
3680Lecture29 - U of L Class Index
... a peripheral target in two different conditions: – target alone – accompanied by distractor ...
... a peripheral target in two different conditions: – target alone – accompanied by distractor ...
Synaptic receptors, neurotransmitters and brain modulators
... psychostimulant drugs (such as cocaine) directly target VTA. Hence, it is widely implicated in neurobiological theories of addiction. It is also shown to process various types of emotion and security motivation, where it may also play a role in avoidance and fearconditioning. ...
... psychostimulant drugs (such as cocaine) directly target VTA. Hence, it is widely implicated in neurobiological theories of addiction. It is also shown to process various types of emotion and security motivation, where it may also play a role in avoidance and fearconditioning. ...
Towards natural stimulation in fMRI—Issues of data analysis
... processing: viewing of a 20-min movie led to increased correlations within these networks and to decreased correlations between non-connected regions. ICA has also revealed neural correlates of other complex human behaviors, such as simulated driving (Calhoun et al., 2002; Carvalho et al., 2006). An ...
... processing: viewing of a 20-min movie led to increased correlations within these networks and to decreased correlations between non-connected regions. ICA has also revealed neural correlates of other complex human behaviors, such as simulated driving (Calhoun et al., 2002; Carvalho et al., 2006). An ...
The Trace Deletion Hypothesis and the Tree
... center-embedding structures is supportive for TDH. It should be added, though, that there are also straightforward phrase structural differences between the two types of sentence. If the specific expertise of Broca’s area is phrase structural (contrary to TDH), then these differential activations we ...
... center-embedding structures is supportive for TDH. It should be added, though, that there are also straightforward phrase structural differences between the two types of sentence. If the specific expertise of Broca’s area is phrase structural (contrary to TDH), then these differential activations we ...
A Maximum-Likelihood Approach to Modeling Multisensory
... sensory inputs. The ML model predicts the inverse effectiveness observed in neurophysiological experiments. Moreover, the model allows to derive a measure of the neuron‘s ability to discriminate between targets and non-targets. It makes specific predictions how uni- and bimodal discriminability meas ...
... sensory inputs. The ML model predicts the inverse effectiveness observed in neurophysiological experiments. Moreover, the model allows to derive a measure of the neuron‘s ability to discriminate between targets and non-targets. It makes specific predictions how uni- and bimodal discriminability meas ...
Impulsivity-related brain volume deficits in schizophrenia
... Unfortunately, only a few studies on brain dysmorphology in addicted and non-addicted schizophrenic patients have been carried through and these have mainly focused on alcohol abuse. Furthermore, their results were partly inconclusive. While a recent study did not show significant differences betwee ...
... Unfortunately, only a few studies on brain dysmorphology in addicted and non-addicted schizophrenic patients have been carried through and these have mainly focused on alcohol abuse. Furthermore, their results were partly inconclusive. While a recent study did not show significant differences betwee ...
Some Analogies Between Visual Cortical and Genetic Maps
... In contrast to the linear maps of amino-acid sequences in the base code sequences of the DNA, the representations of the visual field in the vi sual cortex are two-dimensional. The mapping of the visual cortex began earlier, but has proceeded more slowly than the mapping of the genetic material. In ...
... In contrast to the linear maps of amino-acid sequences in the base code sequences of the DNA, the representations of the visual field in the vi sual cortex are two-dimensional. The mapping of the visual cortex began earlier, but has proceeded more slowly than the mapping of the genetic material. In ...
The “Conscious” Dorsal Stream - Università degli Studi di Parma
... The cortical circuit formed by area F4, which occupies the posterior sector of the ventral premotor cortex of the macaque monkey, and area VIP (Colby et al. 1993), which occupies the fundus of the intraparietal sulcus, is involved in the organization of head and arm actions in space. Single neuron s ...
... The cortical circuit formed by area F4, which occupies the posterior sector of the ventral premotor cortex of the macaque monkey, and area VIP (Colby et al. 1993), which occupies the fundus of the intraparietal sulcus, is involved in the organization of head and arm actions in space. Single neuron s ...
“Conscious” Dorsal Stream
... The cortical circuit formed by area F4, which occupies the posterior sector of the ventral premotor cortex of the macaque monkey, and area VIP (Colby et al. 1993), which occupies the fundus of the intraparietal sulcus, is involved in the organization of head and arm actions in space. Single neuron s ...
... The cortical circuit formed by area F4, which occupies the posterior sector of the ventral premotor cortex of the macaque monkey, and area VIP (Colby et al. 1993), which occupies the fundus of the intraparietal sulcus, is involved in the organization of head and arm actions in space. Single neuron s ...
Kleine Levin Syndrome (KLS) Symposium (March 26, 2015)
... compared to healthy controls. These results were published in the journal Brain in 2014 and received support from the KLS Foundation. I. Arnulf further observed in 124 French patients with KLS that attention and verbal memory (retrieval strategies) were durably lower in KLS patients than in controls ...
... compared to healthy controls. These results were published in the journal Brain in 2014 and received support from the KLS Foundation. I. Arnulf further observed in 124 French patients with KLS that attention and verbal memory (retrieval strategies) were durably lower in KLS patients than in controls ...
The Emergence of Selective Attention through - laral
... the time increases with the number of distracters and the similarity between the visual features of the target and the distracters [1]. These results, originally used to sustain a serial deployment of a visual attention ‘spotlight’, have been later explained by a parallel interactive process. In par ...
... the time increases with the number of distracters and the similarity between the visual features of the target and the distracters [1]. These results, originally used to sustain a serial deployment of a visual attention ‘spotlight’, have been later explained by a parallel interactive process. In par ...
(2006) Changes in visual receptive fields with microstimulation of
... compete to drive neural responses and ultimately behavior. We stimulated the frontal eye field (FEF) of passively fixating monkeys and produced changes in V4 responses similar to known effects of voluntary attention. Subthreshold FEF stimulation enhanced visual responses at particular locations with ...
... compete to drive neural responses and ultimately behavior. We stimulated the frontal eye field (FEF) of passively fixating monkeys and produced changes in V4 responses similar to known effects of voluntary attention. Subthreshold FEF stimulation enhanced visual responses at particular locations with ...
Specialization within the ventral stream: The case for the visual word
... Unfortunately, in their critique of the visual word form area, P&D adopt neither of those stances. Their argument relies almost exclusively on the overlap of data from different groups of subjects scanned with PET. However, such data are typically generated with a spatial smoothness of 15 mm in PET ...
... Unfortunately, in their critique of the visual word form area, P&D adopt neither of those stances. Their argument relies almost exclusively on the overlap of data from different groups of subjects scanned with PET. However, such data are typically generated with a spatial smoothness of 15 mm in PET ...
text - Systems Neuroscience Course, MEDS 371, Univ. Conn. Health
... the signals carried on the array of LGN axons. Color, edges, depth and movement are some examples of features that are derived or extracted from signals arriving in V1 from the array of LGN axons. For example, the assembly of form (detail) vision begins in V1 with the derivation of edges. Contour in ...
... the signals carried on the array of LGN axons. Color, edges, depth and movement are some examples of features that are derived or extracted from signals arriving in V1 from the array of LGN axons. For example, the assembly of form (detail) vision begins in V1 with the derivation of edges. Contour in ...
31 - UCL
... and output areas, laminar origins and targets of connections), visuotopic organization (e.g., mirror-image or non-mirror-image map of hemifield, bounding areas, pattern of map discontinuities, degree of retinotopy), and physiological properties (e.g., excitatory receptive field size, direction selec ...
... and output areas, laminar origins and targets of connections), visuotopic organization (e.g., mirror-image or non-mirror-image map of hemifield, bounding areas, pattern of map discontinuities, degree of retinotopy), and physiological properties (e.g., excitatory receptive field size, direction selec ...
Decoding visual consciousness from human
... study. Experiences can vary along several dimensions (shades of brightness, orientations, textures and so on) and hierarchical levels (simple features, intermediate shapes and complex objects). (b) Each particular class of experiences is presumably encoded in a specific core NCC. For intensities, su ...
... study. Experiences can vary along several dimensions (shades of brightness, orientations, textures and so on) and hierarchical levels (simple features, intermediate shapes and complex objects). (b) Each particular class of experiences is presumably encoded in a specific core NCC. For intensities, su ...
Processing of complex stimuli and natural scenes in the visual cortex
... neurons are probed with more natural stimuli. However, with the classical reverse correlation technique it is not possible to use natural stimuli for methodological reasons: the correlations inherent to natural stimuli spoil the obtained RF estimate [14]. In contrast to the pixel white noise, which ...
... neurons are probed with more natural stimuli. However, with the classical reverse correlation technique it is not possible to use natural stimuli for methodological reasons: the correlations inherent to natural stimuli spoil the obtained RF estimate [14]. In contrast to the pixel white noise, which ...
Reduced Gray Matter Volume in the Frontotemporal Cortex of
... found a decreased frontal lobe volume compared with that in healthy control subjects, which seems to be a finding consistent with the results of the current study. In another article, Kanemura and Aihara17 reported the decreased apparent diffusion coefficient in the normal-appearing frontal lobe of ...
... found a decreased frontal lobe volume compared with that in healthy control subjects, which seems to be a finding consistent with the results of the current study. In another article, Kanemura and Aihara17 reported the decreased apparent diffusion coefficient in the normal-appearing frontal lobe of ...
DOC
... Bressler, 1995). The concepts of parallel distributed processing developed in nonhuman primates provide useful models for understanding the extraordinary processing capa bility achieved by the human brain (Ashford, 1984; Goldman-Rakic, 1988). The field of neuropsychology can use this understanding t ...
... Bressler, 1995). The concepts of parallel distributed processing developed in nonhuman primates provide useful models for understanding the extraordinary processing capa bility achieved by the human brain (Ashford, 1984; Goldman-Rakic, 1988). The field of neuropsychology can use this understanding t ...