feature analyzers in the brain
... prey-catching in the laboratory worm stimulus releasing value ~ s antiworm (= “amount”) releasing value ~ s square biphasic ~ s (bugs predators ?) ...
... prey-catching in the laboratory worm stimulus releasing value ~ s antiworm (= “amount”) releasing value ~ s square biphasic ~ s (bugs predators ?) ...
Document
... There are two major visual projection pathways from the retina to the cerebral cortex in the cat: one of these is the geniculo-striate system, which conveys information to the primary visual cortex by way of the lateral geniculate nucleus. The other is the extrageniculo-extrastriate system, in which ...
... There are two major visual projection pathways from the retina to the cerebral cortex in the cat: one of these is the geniculo-striate system, which conveys information to the primary visual cortex by way of the lateral geniculate nucleus. The other is the extrageniculo-extrastriate system, in which ...
Event-Related Potentials
... when subjects retain verbal and spatial items for short periods of time (Sarnthein et al., 1998) and in the beta frequency range between extrastriate areas when they retain visual object representations (Tallon-Baudry et al., 2001). These studies suggest that large-scale cortical network function is ...
... when subjects retain verbal and spatial items for short periods of time (Sarnthein et al., 1998) and in the beta frequency range between extrastriate areas when they retain visual object representations (Tallon-Baudry et al., 2001). These studies suggest that large-scale cortical network function is ...
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 ...
Visual adaptation: Neural, psychological and computational aspects
... efficiency. Suppose the parameters of the linear–nonlinear system are optimally suited for encoding a stimulus distribution with some amplitude spectrum. Any change in the stimulus distribution could then be compensated for by adjusting neural filtering such that the filtered stimulus distribution remai ...
... efficiency. Suppose the parameters of the linear–nonlinear system are optimally suited for encoding a stimulus distribution with some amplitude spectrum. Any change in the stimulus distribution could then be compensated for by adjusting neural filtering such that the filtered stimulus distribution remai ...
MirrorBot Report 6
... and characteristics defined in the scenario will have an influence on the sensorimotor representation we will need to define. This point will be discussed below. Another point linked to the technological constraint is to adapt the representation to the actuators and sensors embedded in the robot. Th ...
... and characteristics defined in the scenario will have an influence on the sensorimotor representation we will need to define. This point will be discussed below. Another point linked to the technological constraint is to adapt the representation to the actuators and sensors embedded in the robot. Th ...
Cortical mechanisms of sensory learning and object recognition
... them along the path of learning about the faces and places surrounding them. One of the most constructive processes in perception is object recognition, since our three-dimensional understanding of the objects around us are known to us only via brief, often occluded, twodimensional blips somewhere o ...
... them along the path of learning about the faces and places surrounding them. One of the most constructive processes in perception is object recognition, since our three-dimensional understanding of the objects around us are known to us only via brief, often occluded, twodimensional blips somewhere o ...
Location of the polysensory zone in the precentral gyrus
... receptive field. Objects farther than about 20 cm from the body did not give consistent responses. One site had a visual response but no detectable somatosensory response. The visual response at this location was similar to the responses found at the other locations, in that it was best for objects ...
... receptive field. Objects farther than about 20 cm from the body did not give consistent responses. One site had a visual response but no detectable somatosensory response. The visual response at this location was similar to the responses found at the other locations, in that it was best for objects ...
Seeing faces and objects with the “mind`s eye”
... Moreover, with the same visual cue, a famous name, an image could be generated from either LTM or STM. For example, one could imagine Marilyn Monroe without seeing her picture before the imagery task (LTM), or one could memorize a specific picture of Marilyn Monroe and shortly after generate a menta ...
... Moreover, with the same visual cue, a famous name, an image could be generated from either LTM or STM. For example, one could imagine Marilyn Monroe without seeing her picture before the imagery task (LTM), or one could memorize a specific picture of Marilyn Monroe and shortly after generate a menta ...
Reduced BOLD response to periodic visual stimulation
... 10 s was calculated for each condition (seven frequencies, periodic and aperiodic), starting 10 s after the onset of stimulation. Baseline was taken as the mean signal during 30 s of rest preceding the stimulus. The results were averaged over the two trials of each condition. For each subject, the p ...
... 10 s was calculated for each condition (seven frequencies, periodic and aperiodic), starting 10 s after the onset of stimulation. Baseline was taken as the mean signal during 30 s of rest preceding the stimulus. The results were averaged over the two trials of each condition. For each subject, the p ...
Visual signals in the dorsolateral pontine nucleus of the alert
... response was related to the size of the test spot stimulus. For a 1.7 deg test spot moving at about 0.4 Hz + 10 deg, the amplitude of the burst was 283 spikes/s (Fig. 1A). When a 0.6 deg test spot was moved at the same frequency and amplitude, the cell exhibited a peak discharge rate of 176 spikes/s ...
... response was related to the size of the test spot stimulus. For a 1.7 deg test spot moving at about 0.4 Hz + 10 deg, the amplitude of the burst was 283 spikes/s (Fig. 1A). When a 0.6 deg test spot was moved at the same frequency and amplitude, the cell exhibited a peak discharge rate of 176 spikes/s ...
Chapter 29 - krigolson teaching
... which vision is quite clear during a saccade. An object can be seen during a saccade if it is moving as fast as the eye and in the same direction, as occurs for example during a saccade in the direction of a car passing the observer in a train. What may instead be the case is that much of the visual ...
... which vision is quite clear during a saccade. An object can be seen during a saccade if it is moving as fast as the eye and in the same direction, as occurs for example during a saccade in the direction of a car passing the observer in a train. What may instead be the case is that much of the visual ...
Specialization within the ventral stream: The case for the visual word
... The efficiency of reading in literate adults rests on the ability to quickly identify visual words across large variations of irrelevant parameters such as position, size, color, font, or case. This perceptual expertise requires no less than five years of academic training in a specific writing syst ...
... The efficiency of reading in literate adults rests on the ability to quickly identify visual words across large variations of irrelevant parameters such as position, size, color, font, or case. This perceptual expertise requires no less than five years of academic training in a specific writing syst ...
AIP
... area showed that the anterograde and retrograde labelings in the agranular frontal cortex was almost completely confined to F5 and, therefore, the anatomical linkage between these two areas is highly selective and reciprocal. In addition, the differential distribution of the labeling observed in the ...
... area showed that the anterograde and retrograde labelings in the agranular frontal cortex was almost completely confined to F5 and, therefore, the anatomical linkage between these two areas is highly selective and reciprocal. In addition, the differential distribution of the labeling observed in the ...
Role of Feedforward and Feedback Projections in Figure
... 3. Contextual modulation of classical receptive field responses The feedforward established response property of visual neurons is not fixed. It can be modified by factors such as experience and learning, or, more importantly, by the spatial and temporal context in which a stimulus is presented. The ...
... 3. Contextual modulation of classical receptive field responses The feedforward established response property of visual neurons is not fixed. It can be modified by factors such as experience and learning, or, more importantly, by the spatial and temporal context in which a stimulus is presented. The ...
View PDF - Laboratory of Brain, Hearing and Behavior
... Selection deficits caused by SC inactivation in monkeys and improved peak discrimination by switch-like responses in the OT of owls. (a) Effect of focal SC inactivation on behavioral performance by monkeys in a contrast, oddball task. The task was the same as described in Figure 2a, except that the ...
... Selection deficits caused by SC inactivation in monkeys and improved peak discrimination by switch-like responses in the OT of owls. (a) Effect of focal SC inactivation on behavioral performance by monkeys in a contrast, oddball task. The task was the same as described in Figure 2a, except that the ...
Chapter 5 Learning to attend in primary visual cortex
... knowledge, it has not yet been investigated if and how neuronal responses in the visual cortex change as a result of learning within a single recording session. During a single learning session, neurons in frontal cortex change their responses (Chen and Wise 1996; Asaad et al 1998; Yotsumoto et al 2 ...
... knowledge, it has not yet been investigated if and how neuronal responses in the visual cortex change as a result of learning within a single recording session. During a single learning session, neurons in frontal cortex change their responses (Chen and Wise 1996; Asaad et al 1998; Yotsumoto et al 2 ...
The Emergence of Selective Attention through - laral
... its features, such as the colour or the shape. Subjects’ response is very fast and accurate when the target is defined by a unique feature, producing the so-called ‘pop-out’ effect [5], otherwise the time increases with the number of distracters and the similarity between the visual features of the ...
... its features, such as the colour or the shape. Subjects’ response is very fast and accurate when the target is defined by a unique feature, producing the so-called ‘pop-out’ effect [5], otherwise the time increases with the number of distracters and the similarity between the visual features of the ...
02 The Visual System
... II. Hierarchy of complex receptive fields A. Retinal ganglion cells: Center-surround structure, Sensitive to contrast, and wavelength of light B. Striate cortex: Orientation selectivity, direction selectivity, and binocularity C. Extrastriate cortical areas: Selective responsive to complex shapes; e ...
... II. Hierarchy of complex receptive fields A. Retinal ganglion cells: Center-surround structure, Sensitive to contrast, and wavelength of light B. Striate cortex: Orientation selectivity, direction selectivity, and binocularity C. Extrastriate cortical areas: Selective responsive to complex shapes; e ...
Last Lecture http://www.umich.edu/~psycours/345/
... Temporal hemiretina- RVFprojects to left hemisphere ...
... Temporal hemiretina- RVFprojects to left hemisphere ...
Neural correlates of consciousness: A definition of the dorsal and
... Several visual areas assigned to the dorsal stream by most current descriptions of the visual hierarchy appear to have connections with the ventral stream as illustrated by the middle temporal (MT) and superior temporal polysensory (STP) [22,23]. The projections to the ventral stream from these clas ...
... Several visual areas assigned to the dorsal stream by most current descriptions of the visual hierarchy appear to have connections with the ventral stream as illustrated by the middle temporal (MT) and superior temporal polysensory (STP) [22,23]. The projections to the ventral stream from these clas ...
ppt
... rasters of a simulated single neuron to the three different stimuli. If the observer has to decode the responses in time window 1, but does not know the precise post-stimulus time at which the considered responses were emitted, it might set the decoder using the wrong response probabilities (for exa ...
... rasters of a simulated single neuron to the three different stimuli. If the observer has to decode the responses in time window 1, but does not know the precise post-stimulus time at which the considered responses were emitted, it might set the decoder using the wrong response probabilities (for exa ...
PDF preprint - The Computational Neurobiology Laboratory
... therefore that the lateral connections modulate rather than drive V1 activity. It can be shown (Wiener, 1994; Cowan, 1997; Bressloff et al., 2000) that the weighting function defined in equation (1.2) has a well defined symmetry: it is invariant with respect to certain operations in the plane of V1–tra ...
... therefore that the lateral connections modulate rather than drive V1 activity. It can be shown (Wiener, 1994; Cowan, 1997; Bressloff et al., 2000) that the weighting function defined in equation (1.2) has a well defined symmetry: it is invariant with respect to certain operations in the plane of V1–tra ...
When the Sun Prickles Your Nose: An EEG Study Identifying
... Background: Exposure to bright light such as sunlight elicits a sneeze or prickling sensation in about one of every four individuals. This study presents the first scientific examination of this phenomenon, called ‘the photic sneeze reflex’. Methodology and Principal Findings: In the present experim ...
... Background: Exposure to bright light such as sunlight elicits a sneeze or prickling sensation in about one of every four individuals. This study presents the first scientific examination of this phenomenon, called ‘the photic sneeze reflex’. Methodology and Principal Findings: In the present experim ...
“Conscious” Dorsal Stream
... were observed in ocular saccades, pursuit and optokinetik nistagmus. Tactile stimuli applied to the contralesional side of the face also failed to elicit orienting responses. Single neurons studies showed that most F4 neurons discharge in association with monkey’s active movements (Gentilucci et al. ...
... were observed in ocular saccades, pursuit and optokinetik nistagmus. Tactile stimuli applied to the contralesional side of the face also failed to elicit orienting responses. Single neurons studies showed that most F4 neurons discharge in association with monkey’s active movements (Gentilucci et al. ...