Visuospatial processing and the right
... in the performances of the two hemispheres in recognition memory tasks. When asked to decide whether a stimulus was presented in a study set, the left hemisphere tends to falsely ‘‘recognize’’ items that are thematically similar to studied stimuli, but that had never been presented. The right hemisp ...
... in the performances of the two hemispheres in recognition memory tasks. When asked to decide whether a stimulus was presented in a study set, the left hemisphere tends to falsely ‘‘recognize’’ items that are thematically similar to studied stimuli, but that had never been presented. The right hemisp ...
A perceptual representation in the frontal eye field during covert
... then were defined as the beginnings and ends of the monotonic changes in eye position that lasted for at least 10 ms. A lever turn was defined as a turn > 15 from vertical. The beginning and end of each lever turn were defined as the beginning and end of the monotonic change in lever position before a ...
... then were defined as the beginnings and ends of the monotonic changes in eye position that lasted for at least 10 ms. A lever turn was defined as a turn > 15 from vertical. The beginning and end of each lever turn were defined as the beginning and end of the monotonic change in lever position before a ...
Topographic maps in human frontal and parietal cortex
... Department of Psychology, Center for the Study of Brain, Mind, and Behavior, and Princeton Neuroscience Institute, Princeton University, Princeton, NJ 08540 ...
... Department of Psychology, Center for the Study of Brain, Mind, and Behavior, and Princeton Neuroscience Institute, Princeton University, Princeton, NJ 08540 ...
Visual Fields
... determine the health of the ocular system including the eye, visual pathways and visual cortex. We will explore visual fields as an important tool for eye care practitioners in assessing the health of the visual system. We will examine visual fields by first understanding them and how they are measu ...
... determine the health of the ocular system including the eye, visual pathways and visual cortex. We will explore visual fields as an important tool for eye care practitioners in assessing the health of the visual system. We will examine visual fields by first understanding them and how they are measu ...
A multi-level account of selective attention
... Not long after Broadbent’s seminal book, Moray (1959) demonstrated that selection was not always implemented by an early filtering mechanism, as he noted that about one-third of subjects detected their own name when it was inserted in the unattended stream, despite a general lack of awareness of the ...
... Not long after Broadbent’s seminal book, Moray (1959) demonstrated that selection was not always implemented by an early filtering mechanism, as he noted that about one-third of subjects detected their own name when it was inserted in the unattended stream, despite a general lack of awareness of the ...
T2 - Center for Neural Basis of Cognition
... Remapping of visual signals is widespread in monkey cortex. Split-brain monkeys are able to remap visual signals across the vertical meridian. Remapped visual signals are present in area LIP in split-brain monkeys. Remapped visual signals are robust in human parietal and visual cortex. In a split-br ...
... Remapping of visual signals is widespread in monkey cortex. Split-brain monkeys are able to remap visual signals across the vertical meridian. Remapped visual signals are present in area LIP in split-brain monkeys. Remapped visual signals are robust in human parietal and visual cortex. In a split-br ...
Stimuluslocked responses on human arm muscles reveal a rapid
... procedure was performed for every sample (1 ms) between 40 and 300 ms after peripheral target appearance. Thus, multiple trials were used to generate a time-series of ROC values that represents the probability of determining the target being reached towards based on the EMG activity. The same proced ...
... procedure was performed for every sample (1 ms) between 40 and 300 ms after peripheral target appearance. Thus, multiple trials were used to generate a time-series of ROC values that represents the probability of determining the target being reached towards based on the EMG activity. The same proced ...
Seeing faces and objects with the “mind`s eye”
... resulted in increased activation in the right IPS and right IFG, consistent with reports on activation in these regions during sustained attention (e.g., Pardo et al., 1990). The parietal and frontal regions activated during visual imagery of faces and objects also mediate other cognitive functions, ...
... resulted in increased activation in the right IPS and right IFG, consistent with reports on activation in these regions during sustained attention (e.g., Pardo et al., 1990). The parietal and frontal regions activated during visual imagery of faces and objects also mediate other cognitive functions, ...
Human Lateral Geniculate Nucleus and Visual Cortex Respond to
... characteristics of the SSVEPs usually evoked by repeated flashed stimuli. Indeed, these oscillations are phase-locked to the periodic stimulus, as they are best observed on the averaged evoked potentials. Our data show that this kind of high temporal frequency oscillating signal is evoked by a commo ...
... characteristics of the SSVEPs usually evoked by repeated flashed stimuli. Indeed, these oscillations are phase-locked to the periodic stimulus, as they are best observed on the averaged evoked potentials. Our data show that this kind of high temporal frequency oscillating signal is evoked by a commo ...
Attention
... study attention to visual features. (Refer to PowerPoint slides 12 to 14.) Teaching Suggestion: Using Figure 21.8, explain how we are able to pay attention to particular visual features such as color and this attention can enhance performance. Describe the PET imaging experiments done to study brain ...
... study attention to visual features. (Refer to PowerPoint slides 12 to 14.) Teaching Suggestion: Using Figure 21.8, explain how we are able to pay attention to particular visual features such as color and this attention can enhance performance. Describe the PET imaging experiments done to study brain ...
text - Systems Neuroscience Course, MEDS 371, Univ. Conn. Health
... (When we refer to visual system functions, we typically describe them in relation to the visual fields and the retinal images are not mentioned. By contrast, to learn about visual system functions, we must pay careful attention to the retinal images, for they are represented in the signals to the br ...
... (When we refer to visual system functions, we typically describe them in relation to the visual fields and the retinal images are not mentioned. By contrast, to learn about visual system functions, we must pay careful attention to the retinal images, for they are represented in the signals to the br ...
Acoustical Vision of Neglected Stimuli: Interaction among Spatially
... There have been recent attempts to demonstrate that similar principles of multisensory integration can also occur in humans. Stein, London, Wilkinson, and Price (1996) tested a group of normal subjects in a visual luminance judgement task. Subjects were required to fixate directly ahead and to rate ...
... There have been recent attempts to demonstrate that similar principles of multisensory integration can also occur in humans. Stein, London, Wilkinson, and Price (1996) tested a group of normal subjects in a visual luminance judgement task. Subjects were required to fixate directly ahead and to rate ...
The Motor System of the Cortex and the Brain Stem
... Visual receptors, about 125 million in each eye, are neurons specialized to turn light into electrical signals. They occur in two forms. Rods are most sensitive to dim light and do not convey color. Cones work in bright light and are responsible for acute detail, black-and-white vision, and color vi ...
... Visual receptors, about 125 million in each eye, are neurons specialized to turn light into electrical signals. They occur in two forms. Rods are most sensitive to dim light and do not convey color. Cones work in bright light and are responsible for acute detail, black-and-white vision, and color vi ...
Brain Mechanisms of Memory and Cognition
... that the cortex uses two strategies: (1) to hard-wire neurons, using feedforward connections, to detect features and relations that are particularly frequent and/or important; (2) to use high-speed dynamic grouping systems, based on reciprocal corticocortical connections, that can create a represent ...
... that the cortex uses two strategies: (1) to hard-wire neurons, using feedforward connections, to detect features and relations that are particularly frequent and/or important; (2) to use high-speed dynamic grouping systems, based on reciprocal corticocortical connections, that can create a represent ...
Neural correlates of attention in primate visual cortex
... the two theories of attentional selection that dominate the psychophysical literature: the early and late-selection theories. The visual system seems to perform some early selection of inputs with further selection in areas that contain more complex representations of the visual environment. However ...
... the two theories of attentional selection that dominate the psychophysical literature: the early and late-selection theories. The visual system seems to perform some early selection of inputs with further selection in areas that contain more complex representations of the visual environment. However ...
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 ...
The visual cortex - Neuroscience Network Basel
... Orientation columns: neighboring cells have similar orientation preference, orientation columns are present in cats and monkeys, but not rats and mice, columns have 30 - 100m diameter, then comes a new orientation. Orientation angles shift systematically from column to column, covering the whole ra ...
... Orientation columns: neighboring cells have similar orientation preference, orientation columns are present in cats and monkeys, but not rats and mice, columns have 30 - 100m diameter, then comes a new orientation. Orientation angles shift systematically from column to column, covering the whole ra ...
T2 - Center for Neural Basis of Cognition
... Extrastriate Summary 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 ...
... Extrastriate Summary 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 ...
BETA ACTIVITY: A CARRIER FOR VISUAL ATTENTION
... excitability of cells activated by attended objects or voluntary action (Treisman and Gelade 1980, Crick 1994). The possibility exists that both mechanisms cooperate; the attentional mechanism may activate populations of cells thereby allowing them to synchronize their activity. In a hierarchically ...
... excitability of cells activated by attended objects or voluntary action (Treisman and Gelade 1980, Crick 1994). The possibility exists that both mechanisms cooperate; the attentional mechanism may activate populations of cells thereby allowing them to synchronize their activity. In a hierarchically ...
Interactions between attention, context and learning in primary
... and feedback connections in the final outcome of visuospatial integration. The contextual influences for cells in V1 show a powerful facilitation that depends on the precise relative placement of line segments inside and outside the receptive field. Psychophysical experiments measuring the detectabi ...
... and feedback connections in the final outcome of visuospatial integration. The contextual influences for cells in V1 show a powerful facilitation that depends on the precise relative placement of line segments inside and outside the receptive field. Psychophysical experiments measuring the detectabi ...
Dispatch Vision: How to Train Visual Cortex to Predict Reward Time
... only early visual representations but also rapid object recognition, a key function of the primate visual system [6]. In recent years, the feedforward view of visual processing has undergone significant revision, with increasing appreciation for the role of feedback from higher cortical centers, as ...
... only early visual representations but also rapid object recognition, a key function of the primate visual system [6]. In recent years, the feedforward view of visual processing has undergone significant revision, with increasing appreciation for the role of feedback from higher cortical centers, as ...
Lightweight Authentication Protocol For Smart Dust
... Future studies also involve using this processor as an eye of the robots, which provides tremendous applications ...
... Future studies also involve using this processor as an eye of the robots, which provides tremendous applications ...