Beyond the classical receptive field: The effect of contextual stimuli
... encoding increasingly complex features. Whereas lowerlevel RFs mediate perceptual filling-in, contour integration, and figure–ground segregation, RFs at higher levels serve the perception of grouping by common fate, biological motion, and other biologically relevant stimuli, such as faces. Studies i ...
... encoding increasingly complex features. Whereas lowerlevel RFs mediate perceptual filling-in, contour integration, and figure–ground segregation, RFs at higher levels serve the perception of grouping by common fate, biological motion, and other biologically relevant stimuli, such as faces. Studies i ...
primary visual cortex and visual awareness
... (as during binocular rivalry61) or fail to isolate the target stimulus (as during perceptual crowding132). Early single-unit studies in the monkey yielded few reports of attentional modulation in the primary visual cortex (V1; REF. 133), whereas effects in extrastriate visual areas such as V4 were o ...
... (as during binocular rivalry61) or fail to isolate the target stimulus (as during perceptual crowding132). Early single-unit studies in the monkey yielded few reports of attentional modulation in the primary visual cortex (V1; REF. 133), whereas effects in extrastriate visual areas such as V4 were o ...
recognition memory: what are the roles of the perirhinal cortex and
... remember only one stimulus at a time. First, under these conditions, neuronal activity related to a prior stimulus occurs in the delay before an animal must make a familiarity discrimination about that stimulus22,34,41,46. Second, if an animal has been trained to expect rewards for repetitions of a ...
... remember only one stimulus at a time. First, under these conditions, neuronal activity related to a prior stimulus occurs in the delay before an animal must make a familiarity discrimination about that stimulus22,34,41,46. Second, if an animal has been trained to expect rewards for repetitions of a ...
Superior Colliculus and Visual Spatial Attention
... a similar effect, but only for spatial cues and not for symbolic cues. These neurons also showed higher activity during the delay period after the spatial cue was presented but before the appearance of the “C” stimulus, suggesting that visualmotor SC neurons may be especially important for stimulus- ...
... a similar effect, but only for spatial cues and not for symbolic cues. These neurons also showed higher activity during the delay period after the spatial cue was presented but before the appearance of the “C” stimulus, suggesting that visualmotor SC neurons may be especially important for stimulus- ...
The representation of visual depth perception based on the
... coordinates on a plane, and how three-dimensional perceptions differ between an actual scene and an image of the same scene are questions that have not yet been explored in depth. They seem like commonplace phenomena, but in fact, they are important and difficult issues for visual information proces ...
... coordinates on a plane, and how three-dimensional perceptions differ between an actual scene and an image of the same scene are questions that have not yet been explored in depth. They seem like commonplace phenomena, but in fact, they are important and difficult issues for visual information proces ...
Slide 1 - Universitas Ciputra
... Perspective that states our behaviors are influenced by our thoughts about a particular ...
... Perspective that states our behaviors are influenced by our thoughts about a particular ...
STUFF TO ADD:
... attempt is unsuccessful—via its interaction with posterior cortices (S. Kapur et al., 1995), and other research proposes that it is involved in error-checking. Thus, two regions—the frontal lobes and the medial temporal lobes—coordinate memory encoding and retrieval (Moscovitch, 1992). This dual-sys ...
... attempt is unsuccessful—via its interaction with posterior cortices (S. Kapur et al., 1995), and other research proposes that it is involved in error-checking. Thus, two regions—the frontal lobes and the medial temporal lobes—coordinate memory encoding and retrieval (Moscovitch, 1992). This dual-sys ...
mechanisms of visual attention in the human cortex
... stimuli presented alone. For example, if a single good stimulus elicited a high firing rate and a single poor stimulus elicited a low firing rate, the response to the paired stimuli was reduced compared with that elicited by the single good stimulus. This result indicates that two stimuli present at ...
... stimuli presented alone. For example, if a single good stimulus elicited a high firing rate and a single poor stimulus elicited a low firing rate, the response to the paired stimuli was reduced compared with that elicited by the single good stimulus. This result indicates that two stimuli present at ...
Visual behaviour mediated by retinal projections directed to the
... adding them last to this minimal adequate model. When there was signi®cant overdispersion using Poisson errors, we re-scaled the model using Pearson's x2/d.f. (where d.f. is degrees of freedom)22. Means 6 standard errors are reported. We assumed that foraging effort was proportional to percentage ti ...
... adding them last to this minimal adequate model. When there was signi®cant overdispersion using Poisson errors, we re-scaled the model using Pearson's x2/d.f. (where d.f. is degrees of freedom)22. Means 6 standard errors are reported. We assumed that foraging effort was proportional to percentage ti ...
A Dynamic Field Theory of Visual Recognition in Infant Looking... Gregor Schöner Sammy Perone () and John P. Spencer ()
... only difference across simulations was in the distribution of the inputs. Mareschal and colleagues (e.g., Mareschal, French, & Quinn, 2000; French et al., 2004) have extensively examined the role of input distribution in asymmetric categorization and have tested predictions of an autoencoder network ...
... only difference across simulations was in the distribution of the inputs. Mareschal and colleagues (e.g., Mareschal, French, & Quinn, 2000; French et al., 2004) have extensively examined the role of input distribution in asymmetric categorization and have tested predictions of an autoencoder network ...
Meaningful auditory information enhances perception of visual
... was so effective that on some trials subjects reported the dancing dots to be segregated from the noise, a sort of “pop-out” phenomenon. This illusion is similar to that described by Van der Burg, Olivers, Bronkhorst, and Theeuwes (2008), where temporally related (but spatially uncorrelated) auditor ...
... was so effective that on some trials subjects reported the dancing dots to be segregated from the noise, a sort of “pop-out” phenomenon. This illusion is similar to that described by Van der Burg, Olivers, Bronkhorst, and Theeuwes (2008), where temporally related (but spatially uncorrelated) auditor ...
Visual and oculomotor selection: links, causes and
... used as targets for saccades [30–33]. Moore and Armstrong examined whether similar visual response enhancements would result from FEF stimulation, in monkeys that were not performing attention tasks, but merely fixating. They found that very brief (20–50 ms) subthreshold microstimulation of the FEF ...
... used as targets for saccades [30–33]. Moore and Armstrong examined whether similar visual response enhancements would result from FEF stimulation, in monkeys that were not performing attention tasks, but merely fixating. They found that very brief (20–50 ms) subthreshold microstimulation of the FEF ...
What insights can fMRI offer into the structure and function of mid-tier visual areas?
... our understanding of just how distributed information processing is—would be far behind current levels without functional magnetic resonance imaging (fMRI). In spite of the fact that fMRI provides only an indirect measure of neural responses (hemodynamic measures like blood flow and oxygenation are ...
... our understanding of just how distributed information processing is—would be far behind current levels without functional magnetic resonance imaging (fMRI). In spite of the fact that fMRI provides only an indirect measure of neural responses (hemodynamic measures like blood flow and oxygenation are ...
Neuroimaging of cognitive functions in human parietal cortex Jody C
... Attention and eye movements Few would challenge the claim that the parietal lobes play an important role in visual attention [6,43], the mechanism that enables us to direct our processing resources to a subset of the available information. Most physiological research on attention has focused on area ...
... Attention and eye movements Few would challenge the claim that the parietal lobes play an important role in visual attention [6,43], the mechanism that enables us to direct our processing resources to a subset of the available information. Most physiological research on attention has focused on area ...
PDF
... classified according to their responses to moving black stimuli, to spots of light and to changes in background illumination. 96 % of units were easily classifiable into one of three categories (Keating & Gaze, 1970; Chung, Gaze & Stirling, 1973). 'Sustained' units show little response to changes of ...
... classified according to their responses to moving black stimuli, to spots of light and to changes in background illumination. 96 % of units were easily classifiable into one of three categories (Keating & Gaze, 1970; Chung, Gaze & Stirling, 1973). 'Sustained' units show little response to changes of ...
Cross-Modal Transfer of Information between the Tactile
... there is no polysensory cross-modal area, no cross-modal region “in which representations formed in one sense would reside and be accessed by another sense,” but suggested instead a system in which the senses can access each other directly from their sensory-specific systems. For the present purpose ...
... there is no polysensory cross-modal area, no cross-modal region “in which representations formed in one sense would reside and be accessed by another sense,” but suggested instead a system in which the senses can access each other directly from their sensory-specific systems. For the present purpose ...
Acoustical Vision of Neglected Stimuli: Interaction among Spatially
... separate modality (vision). In neglect patients, a sound presented at the same position (or at close disparity) as a visual stimulus influenced detection of previously neglected visual targets. Before going on to understand the implications of this finding in a context of a cross-modal interaction ...
... separate modality (vision). In neglect patients, a sound presented at the same position (or at close disparity) as a visual stimulus influenced detection of previously neglected visual targets. Before going on to understand the implications of this finding in a context of a cross-modal interaction ...
Visual areas and spatial summation in human visual cortex
... and V3. A second distinct central field representation Is visible at the fundus of the transverse occipital sulcus (TOS) where areas V3A and V3B are observed (Smith et al., 1998; Tootell et al., 1997). We have confirmed that a portion of this specific representation is within V3A by using angular re ...
... and V3. A second distinct central field representation Is visible at the fundus of the transverse occipital sulcus (TOS) where areas V3A and V3B are observed (Smith et al., 1998; Tootell et al., 1997). We have confirmed that a portion of this specific representation is within V3A by using angular re ...
reviews - Center for Complex Systems and Brain Sciences
... directly concerned with the control of attention, these ventralcolliculus stream areas have indeed been shown to receive attentional feedback modulation, and are involved in the representation of attended locations and objects (that is, in what passes Eye movement through the attentional bottleneck) ...
... directly concerned with the control of attention, these ventralcolliculus stream areas have indeed been shown to receive attentional feedback modulation, and are involved in the representation of attended locations and objects (that is, in what passes Eye movement through the attentional bottleneck) ...
click here for PDF
... If the lenses of the eye do not focus properly various types of refractive error arise, such as short-sightedness (myopia), long-sightedness (hypermetropia or hyperopia) and astigmatism (a condition in which the eyeball is not spherical, causing lack of clarity in some aspects of vision). About 10% ...
... If the lenses of the eye do not focus properly various types of refractive error arise, such as short-sightedness (myopia), long-sightedness (hypermetropia or hyperopia) and astigmatism (a condition in which the eyeball is not spherical, causing lack of clarity in some aspects of vision). About 10% ...
A Neural Circuit Basis for Spatial Working Memory
... (Romanski and others 1999). Beyond the prefrontal cortex, neurons in lateral intraparietal area (LIP) of the posterior parietal cortex have been shown to be active during tasks requiring orienting to a remembered auditory target (Mazzoni and others 1996) but only if they have been trained to perform ...
... (Romanski and others 1999). Beyond the prefrontal cortex, neurons in lateral intraparietal area (LIP) of the posterior parietal cortex have been shown to be active during tasks requiring orienting to a remembered auditory target (Mazzoni and others 1996) but only if they have been trained to perform ...
Segregation and convergence of specialised pathways in
... respectively; we also use the same terms to designate the two types of module that are implied to exist in V4. Thus the type I module in V4 is the likely extension of the blob-thin stripe pathway and the type II module is the likely extension of the interblobinterstripe pathway. These observations a ...
... respectively; we also use the same terms to designate the two types of module that are implied to exist in V4. Thus the type I module in V4 is the likely extension of the blob-thin stripe pathway and the type II module is the likely extension of the interblobinterstripe pathway. These observations a ...
Stop Using Introspection to Gather Data for the Design of... Modeling and Spatial Assistance
... On the one hand, nowadays almost everyone believes that the visual system is a distinct input-module of the mind. But it has been frequently argued that visual mental imagery, a purely mental process, involves the resources of the visual module for the purposes of thinking and reasoning. Regardless ...
... On the one hand, nowadays almost everyone believes that the visual system is a distinct input-module of the mind. But it has been frequently argued that visual mental imagery, a purely mental process, involves the resources of the visual module for the purposes of thinking and reasoning. Regardless ...
The role of attention in binding visual features in working memory
... memory array, irrespective of location. Incorrect colour –shape conjunctions were created by errantly combining a colour and shape that were present in the initial memory array (cf. Wheeler & Treisman, 2002). Participants continued to repeat or count until this key-press response had been made. The ...
... memory array, irrespective of location. Incorrect colour –shape conjunctions were created by errantly combining a colour and shape that were present in the initial memory array (cf. Wheeler & Treisman, 2002). Participants continued to repeat or count until this key-press response had been made. The ...
Primary Visual Pathway
... of on and off zones • Length cells - respond to length of a bar that was moved across a receptive field • Direction cells - respond to direction of a bar moving across the receptive field. ...
... of on and off zones • Length cells - respond to length of a bar that was moved across a receptive field • Direction cells - respond to direction of a bar moving across the receptive field. ...
Visual memory
Visual memory describes the relationship between perceptual processing and the encoding, storage and retrieval of the resulting neural representations. Visual memory occurs over a broad time range spanning from eye movements to years in order to visually navigate to a previously visited location. Visual memory is a form of memory which preserves some characteristics of our senses pertaining to visual experience. We are able to place in memory visual information which resembles objects, places, animals or people in a mental image. The experience of visual memory is also referred to as the mind's eye through which we can retrieve from our memory a mental image of original objects, places, animals or people. Visual memory is one of several cognitive systems, which are all interconnected parts that combine to form the human memory. Types of palinopsia, the persistence or recurrence of a visual image after the stimulus has been removed, is a dysfunction of visual memory.