Relative timing: from behaviour to neurons
... of little brown bats are selective for FM sweep direction (rising or falling frequencies) [15,16]. Direction selectivity for FM tones is also present in the cat’s inferior colliculus [17] and auditory cortex [18]. Sound localization based on intra-aural time disparities is another prominent example ...
... of little brown bats are selective for FM sweep direction (rising or falling frequencies) [15,16]. Direction selectivity for FM tones is also present in the cat’s inferior colliculus [17] and auditory cortex [18]. Sound localization based on intra-aural time disparities is another prominent example ...
Vision
... Inability to discriminate among different hues; caused by damage to the visual association cortex. Inferior temporal cortex: In primates the highest level of the ventral stream of the visual association cortex; located on the inferior portion of the temporal lobe. ...
... Inability to discriminate among different hues; caused by damage to the visual association cortex. Inferior temporal cortex: In primates the highest level of the ventral stream of the visual association cortex; located on the inferior portion of the temporal lobe. ...
Features of Neuronal Synchrony in Mouse Visual Cortex
... Off-line analysis was performed using LabVIEW (National Instruments, Austin, TX) and IDL (Research Systems, Boulder, CO). Oscillatory response modulation and synchronization were analyzed by computing and averaging auto- and cross-correlograms for all trials per condition and recording site with a b ...
... Off-line analysis was performed using LabVIEW (National Instruments, Austin, TX) and IDL (Research Systems, Boulder, CO). Oscillatory response modulation and synchronization were analyzed by computing and averaging auto- and cross-correlograms for all trials per condition and recording site with a b ...
Contextual modulation of primary visual cortex by auditory signals
... modulated by higher-level internal representations triggered by sounds. We recently showed that the semantic content of sounds and sound imagery can also be read out of early visual cortex using fMRI and multivoxel pattern analysis (MVPA) [3]. Multivoxel pattern recognition techniques in functional ...
... modulated by higher-level internal representations triggered by sounds. We recently showed that the semantic content of sounds and sound imagery can also be read out of early visual cortex using fMRI and multivoxel pattern analysis (MVPA) [3]. Multivoxel pattern recognition techniques in functional ...
primary visual cortex and visual awareness
... Visual attention can be directed to a particular region of space, visual feature or object, and can enhance the neural processing of attended stimuli and suppress the processing of irrelevant stimuli. Behavioural studies indicate that attention is necessary but not sufficient for visual awareness — ...
... Visual attention can be directed to a particular region of space, visual feature or object, and can enhance the neural processing of attended stimuli and suppress the processing of irrelevant stimuli. Behavioural studies indicate that attention is necessary but not sufficient for visual awareness — ...
Recounting the impact of Hubel and Wiesel
... introduction set the tone: ‘In the central nervous system the visual pathway from retina to striate cortex provides an opportunity to observe and compare single unit responses at several distinct levels. Patterns of light stimuli most effective in influencing units at one level may no longer be the ...
... introduction set the tone: ‘In the central nervous system the visual pathway from retina to striate cortex provides an opportunity to observe and compare single unit responses at several distinct levels. Patterns of light stimuli most effective in influencing units at one level may no longer be the ...
Within-hemifield perceptual averaging of facial expressions
... Goltz, Kuchinad, Tweed, & Vilis, 2005; Op De Beeck & Vogles, 2000). Large receptive fields allow neuronal responses to be relatively independent of stimulus position, thereby achieving position invariant coding of complex patterns. However, large receptive fields also incur a cost of reduced spatial ...
... Goltz, Kuchinad, Tweed, & Vilis, 2005; Op De Beeck & Vogles, 2000). Large receptive fields allow neuronal responses to be relatively independent of stimulus position, thereby achieving position invariant coding of complex patterns. However, large receptive fields also incur a cost of reduced spatial ...
Visual Properties of Neurons in a Polysensory Area in Superior
... complex objects, and to three-dimensional objects. Many of these units would even respond to a very small (< 1”) stimulus moving rapidly (>5O”/s) through a small portion of the peripheral visual field. The remaining neurons (30%, 59) responded best to particular stimuli. The most interesting of thes ...
... complex objects, and to three-dimensional objects. Many of these units would even respond to a very small (< 1”) stimulus moving rapidly (>5O”/s) through a small portion of the peripheral visual field. The remaining neurons (30%, 59) responded best to particular stimuli. The most interesting of thes ...
High-Level Visual Processing: Cognitive Influences
... fields and encode complex stimulus features. These selectivities often appear somewhat arbitrary. An individual neuron might, for example, respond strongly to a crescent-shaped pattern of a particular color and texture. Cells with such unique selectivities likely provide inputs to yet higher-order n ...
... fields and encode complex stimulus features. These selectivities often appear somewhat arbitrary. An individual neuron might, for example, respond strongly to a crescent-shaped pattern of a particular color and texture. Cells with such unique selectivities likely provide inputs to yet higher-order n ...
Visual Experience Is Necessary for Maintenance But Not
... refinement process, RFs would fail to refine in DR animals and thus average RF size would be larger than normal. Alternatively, if the correlated “waves” of spontaneous retinal activity that are present from birth to eye opening (see Wong 1999 for review) or persistent spontaneous activity in the SC ...
... refinement process, RFs would fail to refine in DR animals and thus average RF size would be larger than normal. Alternatively, if the correlated “waves” of spontaneous retinal activity that are present from birth to eye opening (see Wong 1999 for review) or persistent spontaneous activity in the SC ...
The role of neuronal synchronization in selective attention
... change had occurred. This finding suggests that the processing or the signalling of a sensory change is more efficient when it is handled by an area that is engaged in enhanced gamma-band synchronization [6]. Importantly, the influence of local synchronization of behavioural responses was spatiall ...
... change had occurred. This finding suggests that the processing or the signalling of a sensory change is more efficient when it is handled by an area that is engaged in enhanced gamma-band synchronization [6]. Importantly, the influence of local synchronization of behavioural responses was spatiall ...
Is perception informationally encapsulated? The issue of the theory-ladenness of perception
... to capture information that is extractable directly from the initial optical array without recourse to higher level knowledge. Hildreth and Ulmann (1989) argue for the existence of an intermediate level of vision. At this level occur processes (such as the extraction of shape and of spatial relation ...
... to capture information that is extractable directly from the initial optical array without recourse to higher level knowledge. Hildreth and Ulmann (1989) argue for the existence of an intermediate level of vision. At this level occur processes (such as the extraction of shape and of spatial relation ...
PDF file
... motor, respectively. β (0 ≤ β ≤ 1) is the weight that controls the maximum contribution by the “what” motor. V. N EURON C OMPETITION Lateral inhibition is a mechanism of competition among neurons in the same layer. The output of neuron A is used to inhibit the output of neuron B, which shares a part ...
... motor, respectively. β (0 ≤ β ≤ 1) is the weight that controls the maximum contribution by the “what” motor. V. N EURON C OMPETITION Lateral inhibition is a mechanism of competition among neurons in the same layer. The output of neuron A is used to inhibit the output of neuron B, which shares a part ...
Large-Field Visual Motion Directly Induces an Involuntary Rapid
... Recent neuroscience studies have been concerned with how aimed movements are generated on the basis of target localization. However, visual information from the surroundings as well as from the target can influence arm motor control, in a manner similar to known effects in postural and ocular motor ...
... Recent neuroscience studies have been concerned with how aimed movements are generated on the basis of target localization. However, visual information from the surroundings as well as from the target can influence arm motor control, in a manner similar to known effects in postural and ocular motor ...
Thalamic Activity that Drives Visual Cortical Plasticity
... Readings for the week focus on sprouting, changing receptive fields and cortical remapping What patterns of neuronal activity follow a lesion? How do these changing patterns of activity play a role in plasticity? Specifically, what are the effects of depriving visual input from one eye on the LGN a ...
... Readings for the week focus on sprouting, changing receptive fields and cortical remapping What patterns of neuronal activity follow a lesion? How do these changing patterns of activity play a role in plasticity? Specifically, what are the effects of depriving visual input from one eye on the LGN a ...
Word - Jim Davies
... Each element is represented as a frame with attribute slots, such as location, size, orientation, or thickness. The primitive elements are organized into a two-tiered hierarchy. For example, rectangle and triangle are subclasses of polygon; circle is a subclass of ellipse. General Visual Concepts. T ...
... Each element is represented as a frame with attribute slots, such as location, size, orientation, or thickness. The primitive elements are organized into a two-tiered hierarchy. For example, rectangle and triangle are subclasses of polygon; circle is a subclass of ellipse. General Visual Concepts. T ...
“Conscious” Dorsal Stream
... Perception and action have been traditionally considered separate domains, each of them being implemented in separate anatomical and functional brain sectors. According to this “classic” view, individuals first perceive and then act. In primates, the paradigmatic sensory modality for the study of th ...
... Perception and action have been traditionally considered separate domains, each of them being implemented in separate anatomical and functional brain sectors. According to this “classic” view, individuals first perceive and then act. In primates, the paradigmatic sensory modality for the study of th ...
The “Conscious” Dorsal Stream - Università degli Studi di Parma
... Perception and action have been traditionally considered separate domains, each of them being implemented in separate anatomical and functional brain sectors. According to this “classic” view, individuals first perceive and then act. In primates, the paradigmatic sensory modality for the study of th ...
... Perception and action have been traditionally considered separate domains, each of them being implemented in separate anatomical and functional brain sectors. According to this “classic” view, individuals first perceive and then act. In primates, the paradigmatic sensory modality for the study of th ...
click here for PDF
... In skilled readers the decision when to move the eyes during reading appears to be related to high level factors such as the lexical and syntactic complexity of the text, and regressions are usually a response to comprehension failure (Kennedy et al, 2003). The decision where to move the eyes seems ...
... In skilled readers the decision when to move the eyes during reading appears to be related to high level factors such as the lexical and syntactic complexity of the text, and regressions are usually a response to comprehension failure (Kennedy et al, 2003). The decision where to move the eyes seems ...
A Neurodynamical cortical model of visual attention and
... with different features. This process would operate for all stimulus features: colour, shape, location, etc. This process of feature selection suggests that subjects utilize top–down information (from the feature-based or object memory template) independently of stimulus location in space. The attent ...
... with different features. This process would operate for all stimulus features: colour, shape, location, etc. This process of feature selection suggests that subjects utilize top–down information (from the feature-based or object memory template) independently of stimulus location in space. The attent ...
Comparison of Quantities: Core and Format
... standard template. During normalization, the functional volumes were resampled to a 3 3 3 3 3--mm3 resolution. Last, functional images were smoothed using an isotropic Gaussian kernel (full-width at halfmaximum = 8 mm). Functional data were subjected to a general linear model analysis as implemented ...
... standard template. During normalization, the functional volumes were resampled to a 3 3 3 3 3--mm3 resolution. Last, functional images were smoothed using an isotropic Gaussian kernel (full-width at halfmaximum = 8 mm). Functional data were subjected to a general linear model analysis as implemented ...
Beyond the classical receptive field: The effect of contextual stimuli
... research to experiments in striate and extrastriate cortex, using contextual stimuli, including movie clips and natural scenes. Over the years, theoretical accounts for RF properties have progressively shifted from classic bottom-up processing toward contextual processing with top-down and horizonta ...
... research to experiments in striate and extrastriate cortex, using contextual stimuli, including movie clips and natural scenes. Over the years, theoretical accounts for RF properties have progressively shifted from classic bottom-up processing toward contextual processing with top-down and horizonta ...