The representation of Kanizsa illusory contours in the monkey
... tested the cells using six shapes of the original set of 20: three eliciting the largest firing rates from a particular neurone (‘effective stimuli’) and three which triggered only a moderate response or no response at all (‘noneffective stimuli’). (As IT cortical neurons are often selective for stim ...
... tested the cells using six shapes of the original set of 20: three eliciting the largest firing rates from a particular neurone (‘effective stimuli’) and three which triggered only a moderate response or no response at all (‘noneffective stimuli’). (As IT cortical neurons are often selective for stim ...
The functional organization of the intraparietal sulcus in humans and
... Kanwisher, 2001). These data are supported by studies of patients presenting with lesions of the parietal cortex and neuropsychological deficits such as visuospatial neglect, different forms of apraxia and other visuomotor coordination problems (for reviews see, for example, Marshall & Fink, 2001, 2 ...
... Kanwisher, 2001). These data are supported by studies of patients presenting with lesions of the parietal cortex and neuropsychological deficits such as visuospatial neglect, different forms of apraxia and other visuomotor coordination problems (for reviews see, for example, Marshall & Fink, 2001, 2 ...
CASE 47
... dopamine-containing nerve cells in the substantia nigra. Patients with Parkinson disease may have a combination of symptoms, including resting tremor, rigidity, bradykinesia, disturbance of gait, and postural problems. The cause of Parkinson disease is unknown. ...
... dopamine-containing nerve cells in the substantia nigra. Patients with Parkinson disease may have a combination of symptoms, including resting tremor, rigidity, bradykinesia, disturbance of gait, and postural problems. The cause of Parkinson disease is unknown. ...
Contributions of cortical feedback to sensory processing in primary
... IS V1 (SOMETIMES) AT THE TOP OF THE HIERARCHY? The era of Mountcastle, Hubel and Wiesel had “profound physiological implications” for the study of cortical processing (see Kandel, 2014). Hubel and Wiesel (1959) characterized the response properties of visual cortical neurons in columns: V1 neurons r ...
... IS V1 (SOMETIMES) AT THE TOP OF THE HIERARCHY? The era of Mountcastle, Hubel and Wiesel had “profound physiological implications” for the study of cortical processing (see Kandel, 2014). Hubel and Wiesel (1959) characterized the response properties of visual cortical neurons in columns: V1 neurons r ...
Projections from the superior temporal sulcus to the agranular frontal
... Several electrophysiological studies have shown that neurons in area STP have complex sensory properties. Firstly, although STP neurons are predominantly purely visual, a signi®cant proportion of them have also somatosensory and/or auditory responses (Bruce et al., 1981; Bayliss et al., 1987). Secon ...
... Several electrophysiological studies have shown that neurons in area STP have complex sensory properties. Firstly, although STP neurons are predominantly purely visual, a signi®cant proportion of them have also somatosensory and/or auditory responses (Bruce et al., 1981; Bayliss et al., 1987). Secon ...
Link to fulltext - Ernst Strüngmann Institute
... In Experiment 1, subjects performed a contrast discrimination task within a central grating. Different experimental blocks contained one of the following: (1) a surrounding grating with the same orientation as the center (parallel surround, PS), (2) a surround perpendicular to the center (orthogonal ...
... In Experiment 1, subjects performed a contrast discrimination task within a central grating. Different experimental blocks contained one of the following: (1) a surrounding grating with the same orientation as the center (parallel surround, PS), (2) a surround perpendicular to the center (orthogonal ...
Enhanced Perceptual Functioning in Autism
... plausibly less influenced by conscious executive aspects and most motor components. Although some of these tasks are considered perceptual (e.g., Navontype tasks) and others attentional (e.g., visual search), they all involve the low level, ‘‘pre-attentive’’ perceptual analysis of psychophysical dime ...
... plausibly less influenced by conscious executive aspects and most motor components. Although some of these tasks are considered perceptual (e.g., Navontype tasks) and others attentional (e.g., visual search), they all involve the low level, ‘‘pre-attentive’’ perceptual analysis of psychophysical dime ...
Organization of Visual Areas in Macaque and Human Cerebral
... visuotopic organization, with the vertical meridian represented along their common boundary, and with upper fields represented ventrally and lower fields dorsally in each area. In addition, both areas have a prominent internal modularity related to the processing streams described in other chapters ...
... visuotopic organization, with the vertical meridian represented along their common boundary, and with upper fields represented ventrally and lower fields dorsally in each area. In addition, both areas have a prominent internal modularity related to the processing streams described in other chapters ...
Branching Thalamic Afferents Link Action and Perception
... dominate the functional properties of the cortical cells. These thalamocortical afferents pass to the cortex the main, “driving input”1 that the thalamic relay cells receive from the optic tract or medial lemniscus. The functional organization of these pathways, including cortex, has been studied in ...
... dominate the functional properties of the cortical cells. These thalamocortical afferents pass to the cortex the main, “driving input”1 that the thalamic relay cells receive from the optic tract or medial lemniscus. The functional organization of these pathways, including cortex, has been studied in ...
The Effects of Short-term and Long-term Learning on the Responses
... been arbitrarily associated with certain behaviors (Toth & Assad, 2002), but monkeys nonetheless do not have particular problems with relearning a similar task after parietal lesions, including a lesion of LIP (Rushworth et al., 1997). We sought to understand to which extent and how LIP responses ch ...
... been arbitrarily associated with certain behaviors (Toth & Assad, 2002), but monkeys nonetheless do not have particular problems with relearning a similar task after parietal lesions, including a lesion of LIP (Rushworth et al., 1997). We sought to understand to which extent and how LIP responses ch ...
Inferior Parietal Lobule Function in Spatial Perception and
... of objects in space (77). This deficit can occur despite could no longer recognize landmarks in a town previthe ability to recognize the object and without accom- ously well known to him (53). Wilbrand’s patient could panying visual-field defects (32, 45, 185). Affected usually not recall visual ima ...
... of objects in space (77). This deficit can occur despite could no longer recognize landmarks in a town previthe ability to recognize the object and without accom- ously well known to him (53). Wilbrand’s patient could panying visual-field defects (32, 45, 185). Affected usually not recall visual ima ...
Expectation of reward modulates cognitive signals in the basal ganglia
... to-be-attended location or object, and reward was given consistently. Here the required cognitive processing was identical for different target locations, but the reward outcome was different. The basal ganglia may direct attention to items associated with reward, whereas the cerebral cortex, especi ...
... to-be-attended location or object, and reward was given consistently. Here the required cognitive processing was identical for different target locations, but the reward outcome was different. The basal ganglia may direct attention to items associated with reward, whereas the cerebral cortex, especi ...
... The symptoms of Alzheimer’s disease usually begin to appear around the age of 60. However, some people develop a condition called early-onset Alzheimer’s disease as early as their 20s. Early-onset Alzheimer’s disease is thought to be caused by a genetic disorder. Alzheimer’s disease can progress slo ...
weiten6_PPT04
... Form perception - top-down processing Subjective contours Gestalt psychologists: the whole is more than the sum of its parts – Reversible figures and perceptual sets demonstrate that the same visual stimulus can result in very different perceptions Table of Contents ...
... Form perception - top-down processing Subjective contours Gestalt psychologists: the whole is more than the sum of its parts – Reversible figures and perceptual sets demonstrate that the same visual stimulus can result in very different perceptions Table of Contents ...
Article
... due to the absence of a linear metric of time. SDNs predict that performance on the FIX condition will be similar for the 2T and 3T stimuli because the feedback at the end of each trial can be used to establish consistent states on which to build internal temporal representations for both stimuli. H ...
... due to the absence of a linear metric of time. SDNs predict that performance on the FIX condition will be similar for the 2T and 3T stimuli because the feedback at the end of each trial can be used to establish consistent states on which to build internal temporal representations for both stimuli. H ...
contextual influences on visual processing
... “meaning” of the image by decomposing it into its environmental causes. For each local region of the image, that extraction of meaning is only possible if information from other regions is taken into account. Of particular importance is a set of image cues revealing surface occlusion and/or lighting ...
... “meaning” of the image by decomposing it into its environmental causes. For each local region of the image, that extraction of meaning is only possible if information from other regions is taken into account. Of particular importance is a set of image cues revealing surface occlusion and/or lighting ...
new insights into the functions of the superior temporal cortex
... received a lesion at one location only. In all other animals in which Watson et al.2 made STS lesions, ablation was added to pre-existing brain lesions (of inferior parietal cortex in two cases, and of frontal cortex and corpus callosum in the third). One of these monkeys (the one with frontal and c ...
... received a lesion at one location only. In all other animals in which Watson et al.2 made STS lesions, ablation was added to pre-existing brain lesions (of inferior parietal cortex in two cases, and of frontal cortex and corpus callosum in the third). One of these monkeys (the one with frontal and c ...
Modulation of Inhibition of Return by the Dopamine D2 Receptor
... shown that the temporal extent of the IOR is increased in a dosedependent manner by the administration of d-amphetamine (Fillmore et al. 2005), a drug that increases extracellular DA levels. However, the actions of d-amphetamine are not specific to a particular type of DA receptor. Moreover, d-amphe ...
... shown that the temporal extent of the IOR is increased in a dosedependent manner by the administration of d-amphetamine (Fillmore et al. 2005), a drug that increases extracellular DA levels. However, the actions of d-amphetamine are not specific to a particular type of DA receptor. Moreover, d-amphe ...
BASAL GANGLIA: A "pit stop" that integrates the movement
... submitted to EPOS by third parties in the form of scientific presentations. References to any names, marks, products, or services of third parties or hypertext links to thirdparty sites or information are provided solely as a convenience to you and do not in any way constitute or imply ECR's endorse ...
... submitted to EPOS by third parties in the form of scientific presentations. References to any names, marks, products, or services of third parties or hypertext links to thirdparty sites or information are provided solely as a convenience to you and do not in any way constitute or imply ECR's endorse ...
Document
... reside in a specific neural module (V4 was a strong candidate, e.g., Zeki, 1980), but that it is distributed across extrastriate visual cortex. Therefore, color is also represented in MT, as it is in many other areas of the brain (Dougherty et al., 1999; Gegenfurtner & Hawken, 1996). Single cell rec ...
... reside in a specific neural module (V4 was a strong candidate, e.g., Zeki, 1980), but that it is distributed across extrastriate visual cortex. Therefore, color is also represented in MT, as it is in many other areas of the brain (Dougherty et al., 1999; Gegenfurtner & Hawken, 1996). Single cell rec ...
TINS04
... number of important findings. First of all, newborn rats with microgyri in the frontal, parietal or occipital cortex, subsequently develop anomalies in the MGN: they have more small and fewer large neurons than rats receiving sham lesions, a disruption similar to that found in dyslexics' MGN[22,23]. ...
... number of important findings. First of all, newborn rats with microgyri in the frontal, parietal or occipital cortex, subsequently develop anomalies in the MGN: they have more small and fewer large neurons than rats receiving sham lesions, a disruption similar to that found in dyslexics' MGN[22,23]. ...
Vision`s First Steps: Anatomy, Physiology, and Perception in the
... Each LGN receives input from both eyes, but the input from each eye is segregated to different monocular layers: layers 1, 3, and 6 get input from the contralateral eye, whereas layers 2, 4, and 5 get input from the ipsilateral eye [94]. Hubel and Wiesel discovered that LGN receptive fields have a s ...
... Each LGN receives input from both eyes, but the input from each eye is segregated to different monocular layers: layers 1, 3, and 6 get input from the contralateral eye, whereas layers 2, 4, and 5 get input from the ipsilateral eye [94]. Hubel and Wiesel discovered that LGN receptive fields have a s ...
Abstract Book
... and setting our place among student congresses. Upon completion of the third congress, we are proud to be able to point out that NeuRi has been fully established as a must go ‘end of April’ event for students who reflect on the whole range of functions of the most remarkable and mysterious human org ...
... and setting our place among student congresses. Upon completion of the third congress, we are proud to be able to point out that NeuRi has been fully established as a must go ‘end of April’ event for students who reflect on the whole range of functions of the most remarkable and mysterious human org ...
Blepharospasm
... These two conditions may coexist. It is important to determine the contribution of apraxia of lid opening because this condition does not respond well to botulinum toxin injections. [3] Primary, essential, or idiopathic blepharospasm, often called benign essential blepharospasm (BEB), is not associa ...
... These two conditions may coexist. It is important to determine the contribution of apraxia of lid opening because this condition does not respond well to botulinum toxin injections. [3] Primary, essential, or idiopathic blepharospasm, often called benign essential blepharospasm (BEB), is not associa ...
Aberrant Localization of Synchronous Hemodynamic
... of auditory cortex in patients with schizophrenia and matched healthy control subjects while they performed an auditory oddball task. Results: Patient SHIMs revealed greater synchrony in ventral and medial STG regions (including auditory association Brodmann area [BA] 42); control SHIMs had greater ...
... of auditory cortex in patients with schizophrenia and matched healthy control subjects while they performed an auditory oddball task. Results: Patient SHIMs revealed greater synchrony in ventral and medial STG regions (including auditory association Brodmann area [BA] 42); control SHIMs had greater ...