Signals Conveyed in the Pulvinar Pathway from Superior Colliculus
... We measured presaccadic activity in a 50 ms window that began 50 ms before the saccade start, which was taken as the time at which eye velocity exceeded 50°/s. We measured postsaccadic activity in a 50 ms window that began 70 ms after the beginning of the saccade (Robinson and Wurtz, 1976). This pos ...
... We measured presaccadic activity in a 50 ms window that began 50 ms before the saccade start, which was taken as the time at which eye velocity exceeded 50°/s. We measured postsaccadic activity in a 50 ms window that began 70 ms after the beginning of the saccade (Robinson and Wurtz, 1976). This pos ...
A Motion-sensitive Area in Ferret Extrastriate
... described the location and the retinotopy of various visual cortical areas in the occipital, parietal and temporal lobe of the ferret (Mustela putorius furo) (Innocenti et al., 2002; Manger et al., 2002a,b, 2004). A motion-sensitive area comparable to PMLS and MT/MST, however, initially mentioned by ...
... described the location and the retinotopy of various visual cortical areas in the occipital, parietal and temporal lobe of the ferret (Mustela putorius furo) (Innocenti et al., 2002; Manger et al., 2002a,b, 2004). A motion-sensitive area comparable to PMLS and MT/MST, however, initially mentioned by ...
Characterizing cognition in ADHD: beyond executive dysfunction
... as much as hyperactivity, based on robust objective evidence of behavioral inattention and performance deficits on a laboratory measure of attention, the continuous performance task [11]. However, when specific attentional processes were targeted (i.e. divided, selective, sustained), investigators f ...
... as much as hyperactivity, based on robust objective evidence of behavioral inattention and performance deficits on a laboratory measure of attention, the continuous performance task [11]. However, when specific attentional processes were targeted (i.e. divided, selective, sustained), investigators f ...
Does Loss of Nerve Growth Factor Receptors Precede Loss of
... The density of NGF receptors in control subjects and AD patients was determined with 4 x lo-” M 1251-NGF. Nonspecific binding was determined in the presence of 4 x lo-* M unlabeled NGF. These concentrations were determined by saturation and displacement experiments as follows. Saturation experiments ...
... The density of NGF receptors in control subjects and AD patients was determined with 4 x lo-” M 1251-NGF. Nonspecific binding was determined in the presence of 4 x lo-* M unlabeled NGF. These concentrations were determined by saturation and displacement experiments as follows. Saturation experiments ...
Novel visual stimuli activate a population of neurons
... 6–8 trials for each stimulus had been run, the main data collection task was rerun several times with diVerent familiar images from the standard set, and four further completely novel images. This enabled the neuronal responses after data collection to be compared to typically 8–12 familiar images, ...
... 6–8 trials for each stimulus had been run, the main data collection task was rerun several times with diVerent familiar images from the standard set, and four further completely novel images. This enabled the neuronal responses after data collection to be compared to typically 8–12 familiar images, ...
Saccadic Suppression of Retinotopically Localized Blood Oxygen
... orientation of the stimuli. Closely matching the significant reduction in behavioral performance, the amplitude of the responses in V1 consistently decreased as the stimuli were presented closer to the saccadic onset. These results demonstrate that the neural processes underlying saccade programming ...
... orientation of the stimuli. Closely matching the significant reduction in behavioral performance, the amplitude of the responses in V1 consistently decreased as the stimuli were presented closer to the saccadic onset. These results demonstrate that the neural processes underlying saccade programming ...
The Location and Function of NMDA Receptors in Cat
... in cats and kittens of different ages. If NMDA receptors are involved with visual processing per se, APV might be expected to suppress some component of the visual response, and the effect should be relatively constant at different ages. If, on the other hand, the absence of functional NMDA receptor ...
... in cats and kittens of different ages. If NMDA receptors are involved with visual processing per se, APV might be expected to suppress some component of the visual response, and the effect should be relatively constant at different ages. If, on the other hand, the absence of functional NMDA receptor ...
Phosphorus and proton magnetic resonance
... Parkinson’s disease is the most common neurodegenerative movement disorder with a very high socioeconomic impact. The clinical symptoms of early stage Parkinson’s disease mainly result from progressive degeneration of dopaminergic neurons in the substantia nigra and other monoaminergic cell groups i ...
... Parkinson’s disease is the most common neurodegenerative movement disorder with a very high socioeconomic impact. The clinical symptoms of early stage Parkinson’s disease mainly result from progressive degeneration of dopaminergic neurons in the substantia nigra and other monoaminergic cell groups i ...
Alterations of Mitochondria and Golgi Apparatus Are
... It is important to emphasize that mitochondrial alterations are associated with synaptic loss in AD patients, even before amyloid plaques are detected [32, 45]. Morphological and mor‐ phometric studies revealed that at early stages of AD the number of mitochondria in synaptic terminals is dramatical ...
... It is important to emphasize that mitochondrial alterations are associated with synaptic loss in AD patients, even before amyloid plaques are detected [32, 45]. Morphological and mor‐ phometric studies revealed that at early stages of AD the number of mitochondria in synaptic terminals is dramatical ...
the distribution of the cells of origin of callosal projections in cat
... and Jones, 1971; Tusa and Palmer, 1980). This is unfortunate since, in behavioral experiments, Berlucchi et al. (1979) showed that the callosal connections of the cat’s suprasylvian cortex (including the lateral suprasylvian visual areas and area 21) make a significant contribution to the interhemis ...
... and Jones, 1971; Tusa and Palmer, 1980). This is unfortunate since, in behavioral experiments, Berlucchi et al. (1979) showed that the callosal connections of the cat’s suprasylvian cortex (including the lateral suprasylvian visual areas and area 21) make a significant contribution to the interhemis ...
Visual Categorization and the Primate Prefrontal Cortex
... 500 ms of fixation, a sample image was presented at the center of the screen for 600 ms, followed by a 1,000-ms delay. Then a choice image appeared. If the sample and choice stimuli were from the same category (a category match), the monkeys were required to release the lever before the stimulus dis ...
... 500 ms of fixation, a sample image was presented at the center of the screen for 600 ms, followed by a 1,000-ms delay. Then a choice image appeared. If the sample and choice stimuli were from the same category (a category match), the monkeys were required to release the lever before the stimulus dis ...
The cortical connections of area V6: an occipito
... with the exact amount of tracer that had to be injected and, ®nally, with 0.10 mL of paraf®n oil. A 0.08 mL aliquot of oil was injected into the saline solution of the recording chamber before passing through the dura. The remaining 0.02 mL of oil, occupying the very tip of the needle, was injected ...
... with the exact amount of tracer that had to be injected and, ®nally, with 0.10 mL of paraf®n oil. A 0.08 mL aliquot of oil was injected into the saline solution of the recording chamber before passing through the dura. The remaining 0.02 mL of oil, occupying the very tip of the needle, was injected ...
Prefrontal cortex damage abolishes brand-cued
... NC group, 61% labeled Coke to 52% labeled Pepsi in the BDC group). But the VMPC group exhibited the reverse pattern, selecting greater proportions of labeled Pepsi than labeled Coke (71% labeled Pepsi to 39% labeled Coke). A 3 2 ANOVA of the Semi-blind test data revealed a significant interaction ...
... NC group, 61% labeled Coke to 52% labeled Pepsi in the BDC group). But the VMPC group exhibited the reverse pattern, selecting greater proportions of labeled Pepsi than labeled Coke (71% labeled Pepsi to 39% labeled Coke). A 3 2 ANOVA of the Semi-blind test data revealed a significant interaction ...
Saccadic Eye Movements Modulate Visual Responses in the Lateral
... Another feature of our display, the fixation target, might also have confounded our results. First, there might have been a visual response when the target disappeared at one position and appeared at another. When LGN responses were analyzed relative to this transition, however, no modulation of fir ...
... Another feature of our display, the fixation target, might also have confounded our results. First, there might have been a visual response when the target disappeared at one position and appeared at another. When LGN responses were analyzed relative to this transition, however, no modulation of fir ...
The cortical visual area V6: brain location and visual topography
... dorsal zone had a set of connections different from that found for the ventral one (Colby et al., 1988). The term PO was then retained to indicate the ventral, visually more responsive region of the originally described area PO, leaving unnamed the visually less-responsive cortical region dorsal to ...
... dorsal zone had a set of connections different from that found for the ventral one (Colby et al., 1988). The term PO was then retained to indicate the ventral, visually more responsive region of the originally described area PO, leaving unnamed the visually less-responsive cortical region dorsal to ...
see clearly method
... more intelligent execution, the good results obtained will be still more impressive.” (29) These early studies typically used lenses, prisms and various targets with the intention of reorganizing the visual system and improving acuity, which is exactly what happened. They did not use techniques that ...
... more intelligent execution, the good results obtained will be still more impressive.” (29) These early studies typically used lenses, prisms and various targets with the intention of reorganizing the visual system and improving acuity, which is exactly what happened. They did not use techniques that ...
Functional imaging of human auditory cortex
... it possible to visualize the cortical regions that are activated during sensory perception. Apparently unitary perceptual experience actually involves the parallel activation of many different sensory representations on the cortical surface. For example, visually responsive regions cover more than 3 ...
... it possible to visualize the cortical regions that are activated during sensory perception. Apparently unitary perceptual experience actually involves the parallel activation of many different sensory representations on the cortical surface. For example, visually responsive regions cover more than 3 ...
Neuropsychologia, 47, 1621-6
... 1.4. Experimental design and procedure The experiment followed a 2 hand-type (real, fake) by 2 skin-side (glabrous, hairy) by 3 target-size (1, 2, 3 cm diameter) × 6 target-location within-subjects design. Specifically, participants pointed to visual targets projected onto the glabrous (palm) or hair ...
... 1.4. Experimental design and procedure The experiment followed a 2 hand-type (real, fake) by 2 skin-side (glabrous, hairy) by 3 target-size (1, 2, 3 cm diameter) × 6 target-location within-subjects design. Specifically, participants pointed to visual targets projected onto the glabrous (palm) or hair ...
Vision for Prehension in the Medial Parietal Cortex - Gallettilab
... relative density of receptive fields covering that specific part of the visual field. In the dark red region, more than 200 visual receptive fields are superimposed in the same part of visual field. ipsiVF, ipsilateral part of the visual field; contraVF, contralateral part of the visual field. White dashed ...
... relative density of receptive fields covering that specific part of the visual field. In the dark red region, more than 200 visual receptive fields are superimposed in the same part of visual field. ipsiVF, ipsilateral part of the visual field; contraVF, contralateral part of the visual field. White dashed ...
Hasson-JNeurosci2008.. - Center for Neural Science
... (1924); City Lights (1931)]. Using silent films allowed us to drive activity simultaneously in many brain areas while side-stepping potential complications associated with temporal scrambling of an audio track and speech. The three clips were on average 3.39 min in duration (total duration was 12 mi ...
... (1924); City Lights (1931)]. Using silent films allowed us to drive activity simultaneously in many brain areas while side-stepping potential complications associated with temporal scrambling of an audio track and speech. The three clips were on average 3.39 min in duration (total duration was 12 mi ...
The Influence of Target Properties and the Possible
... Saccadic eye movements, which rapidly and accurately guide our gaze from one point of interest to another, allow us to interact with our visual environment. Latency and peak velocity are among the most studied parameters of saccades with their characteristics pretty well known. However, much less i ...
... Saccadic eye movements, which rapidly and accurately guide our gaze from one point of interest to another, allow us to interact with our visual environment. Latency and peak velocity are among the most studied parameters of saccades with their characteristics pretty well known. However, much less i ...
Lateral Connectivity and Contextual Interactions in Macaque
... contour integration in primary visual cortex (V1): intrinsic horizontal connections and feedback from higher cortical areas. To distinguish between these, we combined functional mapping with a new technique for labeling axons, a recombinant adenovirus bearing the gene for green fluorescent protein ( ...
... contour integration in primary visual cortex (V1): intrinsic horizontal connections and feedback from higher cortical areas. To distinguish between these, we combined functional mapping with a new technique for labeling axons, a recombinant adenovirus bearing the gene for green fluorescent protein ( ...
Form representation in monkey inferotemporal cortex is virtually
... studies of IT neuronal responses have been done under restricted viewing and task conditions. Typically, non-human primates stare at a fixation point while isolated stimuli are flashed on the retina, often in a task that does not require stimulus identification (for example, refs. 3–7). It is not cl ...
... studies of IT neuronal responses have been done under restricted viewing and task conditions. Typically, non-human primates stare at a fixation point while isolated stimuli are flashed on the retina, often in a task that does not require stimulus identification (for example, refs. 3–7). It is not cl ...
gross_neuroanatomy-1
... surface of the brain. Unlike other sulci that delineate lobes, TO is much more variable between individuals and it is not easy to identify • The functional overlap between posterior temporal and occipital cortices is also reflected by the lack of one or more sulci that divide the temporal from the ...
... surface of the brain. Unlike other sulci that delineate lobes, TO is much more variable between individuals and it is not easy to identify • The functional overlap between posterior temporal and occipital cortices is also reflected by the lack of one or more sulci that divide the temporal from the ...
Language repetition and short-term memory: an integrative
... delay between input and output stages during language repetition should be a critical variable. This is supported by a case study with a deep dysphasic patient who has partially recovered from his language impairment, but who shows again semantic effects during repetition as soon as the delay betwee ...
... delay between input and output stages during language repetition should be a critical variable. This is supported by a case study with a deep dysphasic patient who has partially recovered from his language impairment, but who shows again semantic effects during repetition as soon as the delay betwee ...