T2 - Center for Neural Basis of Cognition
... Remapping occurs at early stages of the visual hierarchy. Corollary discharge has an impact far back into the system. Remapping implies widespread connectivity in which many neurons have rapid access to information well beyond the classical receptive field. Vision is an active process of building re ...
... Remapping occurs at early stages of the visual hierarchy. Corollary discharge has an impact far back into the system. Remapping implies widespread connectivity in which many neurons have rapid access to information well beyond the classical receptive field. Vision is an active process of building re ...
Receptive Field Properties of Single Neurons in Rat Primary Visual
... unusual characteristic of responding to two stimulus orientations which were nearly orthogonal to one another. This surprising observation has also been made in the cat V1 (Shevelev et al. 1995). We recorded these cells for a long enough (from 1 to 3 h in several cases) to document this fact and sho ...
... unusual characteristic of responding to two stimulus orientations which were nearly orthogonal to one another. This surprising observation has also been made in the cat V1 (Shevelev et al. 1995). We recorded these cells for a long enough (from 1 to 3 h in several cases) to document this fact and sho ...
Suzuki and Eichenbaum, 2000
... differences in the pattern and strength of visual and olfactory inputs to the medial temporal lobe, behavioral studies of memory in monkeys have most often used visual stimuli, whereas studies in rats have commonly used olfactory stimuli. The entorhinal cortex then provides the major cortical input ...
... differences in the pattern and strength of visual and olfactory inputs to the medial temporal lobe, behavioral studies of memory in monkeys have most often used visual stimuli, whereas studies in rats have commonly used olfactory stimuli. The entorhinal cortex then provides the major cortical input ...
Object Shape Differences Reflected by Somatosensory Cortical
... anatomical format of the standard brain for both PET and cytoarchitectural brain images, revealed that this part of the cortex lining the postcentral sulcus is situated caudally from cytoarchitectural area 1 and may involve presumptive area 2 on the posterior bank of the sulcus. Key words: somatosen ...
... anatomical format of the standard brain for both PET and cytoarchitectural brain images, revealed that this part of the cortex lining the postcentral sulcus is situated caudally from cytoarchitectural area 1 and may involve presumptive area 2 on the posterior bank of the sulcus. Key words: somatosen ...
Organization of Visual Areas in Macaque and Human Cerebral
... across multiple approaches, and replicated by multiple laboratories. The diversity among partitioning schemes signifies that a consensus has been achieved for only a minority of the visual areas illustrated in Figure 2. Several well-defined areas (V1, V2, V4, and MT) are shown by individualized colo ...
... across multiple approaches, and replicated by multiple laboratories. The diversity among partitioning schemes signifies that a consensus has been achieved for only a minority of the visual areas illustrated in Figure 2. Several well-defined areas (V1, V2, V4, and MT) are shown by individualized colo ...
primary motor cortex
... Surrounds the primary visual cortex Uses past visual experiences to interpret visual stimuli Example: color, form and movement Complex processing involves entire posterior half of the hemispheres ...
... Surrounds the primary visual cortex Uses past visual experiences to interpret visual stimuli Example: color, form and movement Complex processing involves entire posterior half of the hemispheres ...
Features of Neuronal Synchrony in Mouse Visual Cortex
... provide a model system for the study of ␥-band synchrony. Multi-unit and local field potential recordings were made from the primary visual cortex of anesthetized C57BL/6J mice. Neuronal responses evoked by moving gratings, bars, and random dot patterns were analyzed with respect to neuronal synchro ...
... provide a model system for the study of ␥-band synchrony. Multi-unit and local field potential recordings were made from the primary visual cortex of anesthetized C57BL/6J mice. Neuronal responses evoked by moving gratings, bars, and random dot patterns were analyzed with respect to neuronal synchro ...
ling411-11-Columns - OWL-Space
... Professor Mountcastle was elected to the National Academy of Sciences in 1966.In 1978, he was awarded the Louisa Gross Horwitz Prize from Columbia University together with David Hubel and Torsten Wiesel, who both received the Nobel Prize in Physiology or Medicine in 1981. In 1983, he was awarded the ...
... Professor Mountcastle was elected to the National Academy of Sciences in 1966.In 1978, he was awarded the Louisa Gross Horwitz Prize from Columbia University together with David Hubel and Torsten Wiesel, who both received the Nobel Prize in Physiology or Medicine in 1981. In 1983, he was awarded the ...
Nervous System Pt 3
... Uses past visual experiences to interpret visual stimuli (e.g., color, form, and movement) Complex processing involves entire posterior half of the hemispheres ...
... Uses past visual experiences to interpret visual stimuli (e.g., color, form, and movement) Complex processing involves entire posterior half of the hemispheres ...
Intermediate
... Figure 1. Ocular dominance columns in a monkey. (a) Anatomical basis. Each afferent axon from the lateral geniculate nucleus ascends through the deep layers of V1 (layers 5, 6) subdividing repeatedly and terminating in layer 4C in a couple of 0.5 mm-wide clusters separated by 0.5 mm gaps (approximat ...
... Figure 1. Ocular dominance columns in a monkey. (a) Anatomical basis. Each afferent axon from the lateral geniculate nucleus ascends through the deep layers of V1 (layers 5, 6) subdividing repeatedly and terminating in layer 4C in a couple of 0.5 mm-wide clusters separated by 0.5 mm gaps (approximat ...
pdf - Olin Neuropsychiatry Research Center
... for which no behavioural response was required, leading Halgren et al. to propose that these areas are specialised for the orientation of attention to salient stimuli, regardless of whether or not they are overtly attended. Using event-related fMRI during auditory and visual oddball detection, Kiehl ...
... for which no behavioural response was required, leading Halgren et al. to propose that these areas are specialised for the orientation of attention to salient stimuli, regardless of whether or not they are overtly attended. Using event-related fMRI during auditory and visual oddball detection, Kiehl ...
Specialization within the ventral stream: The case for the visual word
... 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 group studies. In this context, the finding of overlap between word-related and non-word-r ...
... 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 group studies. In this context, the finding of overlap between word-related and non-word-r ...
Computational modeling of responses in human visual
... ventral sections of V3. This nested organization for V1-V3 is typical of non-human primates. But the confirmation that this organization is present in human was only made in the early 1990s by a combination of neurology and fMRI (20, 21, 23-25). Visual stimuli elicit activity in about twenty percent ...
... ventral sections of V3. This nested organization for V1-V3 is typical of non-human primates. But the confirmation that this organization is present in human was only made in the early 1990s by a combination of neurology and fMRI (20, 21, 23-25). Visual stimuli elicit activity in about twenty percent ...
View PDF
... including hallucination circle (HCC), hallucination fan (HCF), retinotopy circle (RTC) and retinotopy cross (RTX) were used towards registering their impact in the aforementioned visual related areas. One-way analysis of variance was used to evaluate the significance of difference between induced ac ...
... including hallucination circle (HCC), hallucination fan (HCF), retinotopy circle (RTC) and retinotopy cross (RTX) were used towards registering their impact in the aforementioned visual related areas. One-way analysis of variance was used to evaluate the significance of difference between induced ac ...
Science - Princeton University
... "posterior-pulvinar system" of the cat (6). These findings, and the facts that inferotemporal cortex receives afferents from both prestriate cortex and the pulvinar ( 4 ) , strongly suggest that this tissue receives and processes visual information from both the ipsilateral and the contralateral occ ...
... "posterior-pulvinar system" of the cat (6). These findings, and the facts that inferotemporal cortex receives afferents from both prestriate cortex and the pulvinar ( 4 ) , strongly suggest that this tissue receives and processes visual information from both the ipsilateral and the contralateral occ ...
Representation of naturalistic image structure in the primate visual
... response of a center-surround linear filter. V1 simple cell responses are commonly described as rectified (or rectified and squared) responses of oriented linear filters (Heeger, 1992). And V1 complex cell responses are described as an average over these simple cell responses, all having the same o ...
... response of a center-surround linear filter. V1 simple cell responses are commonly described as rectified (or rectified and squared) responses of oriented linear filters (Heeger, 1992). And V1 complex cell responses are described as an average over these simple cell responses, all having the same o ...
Primary Visual Pathway
... was moved across a receptive field • Direction cells - respond to direction of a bar moving across the receptive field. ...
... was moved across a receptive field • Direction cells - respond to direction of a bar moving across the receptive field. ...
Auditory Cortex (1)
... Firing pattern and stimulus selectivity: Wang, X., T. Lu, R.K. Snider and L. Liang. Sustained firing in auditory cortex evoked by preferred stimuli. Nature 435: 341-346 (2005). Wang, X. Neural coding strategies in auditory cortex. Hear Res. 229:81-93 (2007). ...
... Firing pattern and stimulus selectivity: Wang, X., T. Lu, R.K. Snider and L. Liang. Sustained firing in auditory cortex evoked by preferred stimuli. Nature 435: 341-346 (2005). Wang, X. Neural coding strategies in auditory cortex. Hear Res. 229:81-93 (2007). ...
On the computational architecture of the neocortex
... could exist between 100 areas in each hemisphere, perhaps only the order of magnitude of 2000 exist (Fellem a n and Van Essen 1991). This could well be the result of limitations of space inside the cerebral hemispheres, which can only contain so much white matter, but it obviously has computational ...
... could exist between 100 areas in each hemisphere, perhaps only the order of magnitude of 2000 exist (Fellem a n and Van Essen 1991). This could well be the result of limitations of space inside the cerebral hemispheres, which can only contain so much white matter, but it obviously has computational ...
Cerebral atrophy and its relation to cognitive impairment in
... recent VBM studies.11,34 Another MRI study reported no caudate atrophy in D-PD patients vs controls35; however, the measure used was whole caudate volume rather than gray matter density. In a recent VBM study, D-PD patients were found to have a pattern of gray matter loss similar to dementia with Le ...
... recent VBM studies.11,34 Another MRI study reported no caudate atrophy in D-PD patients vs controls35; however, the measure used was whole caudate volume rather than gray matter density. In a recent VBM study, D-PD patients were found to have a pattern of gray matter loss similar to dementia with Le ...
MirrorBot Report 6
... visual cortex model. Right part of the figure shows the two cortical surfaces, displaying at the location of each neuron the pixel that is at the centre of its receptive field. This has to be related to figure 1.3. 1.2.2. Contrast detection Once the centres and sizes of cortical filters are defined ...
... visual cortex model. Right part of the figure shows the two cortical surfaces, displaying at the location of each neuron the pixel that is at the centre of its receptive field. This has to be related to figure 1.3. 1.2.2. Contrast detection Once the centres and sizes of cortical filters are defined ...
The distributed human neural system for face perception
... a latency of 344 ms (P350), was recorded at different electrode sites, including an additional face-responsive region in right anterior ventral temporal cortex, which may correspond to sites of activation in studies of the retrieval of biographical information associated with faces12,41,42. Function ...
... a latency of 344 ms (P350), was recorded at different electrode sites, including an additional face-responsive region in right anterior ventral temporal cortex, which may correspond to sites of activation in studies of the retrieval of biographical information associated with faces12,41,42. Function ...
Decoding visual consciousness from human
... Figure 2. Encoding of intensity by signals in early visual cortex. (a) The perceived intensity of simple visual features is, presumably, encoded in the firing rate of cells in early visual cortex. The solid line shows a saturating model function that relates the perceived magnitude of contrast to th ...
... Figure 2. Encoding of intensity by signals in early visual cortex. (a) The perceived intensity of simple visual features is, presumably, encoded in the firing rate of cells in early visual cortex. The solid line shows a saturating model function that relates the perceived magnitude of contrast to th ...
The Constructive Nature of Visual Processing
... involves analysis of the layout of scenes and of surface properties, parsing the visual image into surfaces and global contours, and distinguishing foreground from background (see Chapter 27). The highest level involves object recognition (see Chapter 28). Once a scene has been parsed by the brain a ...
... involves analysis of the layout of scenes and of surface properties, parsing the visual image into surfaces and global contours, and distinguishing foreground from background (see Chapter 27). The highest level involves object recognition (see Chapter 28). Once a scene has been parsed by the brain a ...
Inferior temporal gyrus
The inferior temporal gyrus is placed below the middle temporal gyrus, and is connected behind with the inferior occipital gyrus; it also extends around the infero-lateral border on to the inferior surface of the temporal lobe, where it is limited by the inferior sulcus. This region is one of the higher levels of the ventral stream of visual processing, associated with the representation of complex object features, such as global shape. It may also be involved in face perception, and in the recognition of numbers.The inferior temporal gyrus is the anterior region of the temporal lobe located underneath the central temporal sulcus. The primary function of the inferior temporal gyrus - otherwise referenced as IT cortex - is associated with visual stimuli processing, namely visual object recognition, and has been suggested by recent experimental results as the final location of the ventral cortical visual system. The IT cortex in humans is also known as the Inferior Temporal Gyrus since it has been located to a specific region of the human temporal lobe. The IT processes visual stimuli of objects in our field of vision, and is involved with memory and memory recall to identify that object; it is involved with the processing and perception created by visual stimuli amplified in the V1, V2, V3, and V4 regions of the occipital lobe. This region processes the color and form of the object in the visual field and is responsible for producing the “what” from this visual stimuli, or in other words identifying the object based on the color and form of the object and comparing that processed information to stored memories of objects to identify that object.The IT cortex’s neurological significance is not just its contribution to the processing of visual stimuli in object recognition but also has been found to be a vital area with regards to simple processing of the visual field, difficulties with perceptual tasks and spatial awareness, and the location of unique single cells that possibly explain the IT cortex’s relation to memory.