The Status of Semantic and Episodic Memory in Amnesia
... words). H.M. had been tested on these subtests 20 times between 1953 (preoperatively) and 2000. When his performance across these test sessions was analyzed, there was no main effect of time, suggesting that H.M.’s semantic knowledge had remained consistent over time, and was not negatively affected ...
... words). H.M. had been tested on these subtests 20 times between 1953 (preoperatively) and 2000. When his performance across these test sessions was analyzed, there was no main effect of time, suggesting that H.M.’s semantic knowledge had remained consistent over time, and was not negatively affected ...
pdf - Olin Neuropsychiatry Research Center
... inhibition are commonly inferred from the brain activity elicited by the NoGo event relative to a Go event baseline or control task. These studies, which have been conducted in the visual modality only, generally concur in reporting activation elicited during response inhibition on NoGo trials in th ...
... inhibition are commonly inferred from the brain activity elicited by the NoGo event relative to a Go event baseline or control task. These studies, which have been conducted in the visual modality only, generally concur in reporting activation elicited during response inhibition on NoGo trials in th ...
Lecture 26-BasalGanglia
... • Inhibition of dopaminergic activity leads to excessive cholinergic activity • In Parkinson’s, lack inhibitory dopamine and thus an increase in excitatory acetylcholine ...
... • Inhibition of dopaminergic activity leads to excessive cholinergic activity • In Parkinson’s, lack inhibitory dopamine and thus an increase in excitatory acetylcholine ...
neural mechanisms for detecting and remembering novel events
... novel or familiar stimuli32. Activity is shown for a region in the lateral prefrontal cortex that had a greater delay-period activity during ‘novel’ trials than during ‘familiar’ trials. The coloured gradient in the background of the graph shows when a peak in activity would be expected if it relate ...
... novel or familiar stimuli32. Activity is shown for a region in the lateral prefrontal cortex that had a greater delay-period activity during ‘novel’ trials than during ‘familiar’ trials. The coloured gradient in the background of the graph shows when a peak in activity would be expected if it relate ...
Modulation of brain activity by electrical stimulation and external
... described it as a progressive disease without a clear starting point, with symptoms such as a feeling of weakness and a tendency towards trembling with one or both hands. Nowadays Parkinson's disease (PD) is one of the most extensive studied neurological disorders due to its widespread occurrence. I ...
... described it as a progressive disease without a clear starting point, with symptoms such as a feeling of weakness and a tendency towards trembling with one or both hands. Nowadays Parkinson's disease (PD) is one of the most extensive studied neurological disorders due to its widespread occurrence. I ...
apoE genotype and AD..
... FIG. 1. A,B and apoE immunolocalization in formic acid-treated paraffin sections of middle frontal gyrus (A, B, C, D) and hippocampus (G, H) of two patients with sporadic late-onset AD. Increased numbers of intensely Al3-immunoreactive vessels and plaques are found in frontal cortex of the APOE4/4 p ...
... FIG. 1. A,B and apoE immunolocalization in formic acid-treated paraffin sections of middle frontal gyrus (A, B, C, D) and hippocampus (G, H) of two patients with sporadic late-onset AD. Increased numbers of intensely Al3-immunoreactive vessels and plaques are found in frontal cortex of the APOE4/4 p ...
Periop Vision Loss
... atherosclerosis or giant cell arteritis, or emboli of various types. Intracellular edema, manifested by retinal pallor, is prominent, especially in the macula where the ganglion cells are most numerous. The vacularized choroid beneath the center of the macula (foveola) stands out in sharp contrast a ...
... atherosclerosis or giant cell arteritis, or emboli of various types. Intracellular edema, manifested by retinal pallor, is prominent, especially in the macula where the ganglion cells are most numerous. The vacularized choroid beneath the center of the macula (foveola) stands out in sharp contrast a ...
Homeostatic plasticity mechanisms in mouse V1
... merely cause the simple network to switch states, back and forth, with a period that reflected the time course of the homeostatic mechanism. The existence of persistent states would require a cell-by-cell mechanism of homeostasis that has a very slow time course. The neural flip-flop is only the mos ...
... merely cause the simple network to switch states, back and forth, with a period that reflected the time course of the homeostatic mechanism. The existence of persistent states would require a cell-by-cell mechanism of homeostasis that has a very slow time course. The neural flip-flop is only the mos ...
Author`s personal copy
... criteria (including cytoarchitecture, myeloarchitecture, and connectivity patterns) and functional criteria such as tuning properties [13,21,24,25]. A logical consequence of this principle is that any individual anatomically or functionally defined area will contain no more than a single representat ...
... criteria (including cytoarchitecture, myeloarchitecture, and connectivity patterns) and functional criteria such as tuning properties [13,21,24,25]. A logical consequence of this principle is that any individual anatomically or functionally defined area will contain no more than a single representat ...
Topographic Maps are Fundamental to Sensory
... or eliminate connections over a larger territory, but this territory becomes restricted with the loss of connections over the course of maturation. Module size is highly related to the relative roles of activity patterns and chemical matching, with chemical matching favoring more uniform topography ...
... or eliminate connections over a larger territory, but this territory becomes restricted with the loss of connections over the course of maturation. Module size is highly related to the relative roles of activity patterns and chemical matching, with chemical matching favoring more uniform topography ...
Segregation and convergence of specialised pathways in
... The experiments reported here reveal no further divergence between these channels: both types of V4 subcompartment make rather similar patterns of connection with further visual areas and subcortical structures. In contrast to V4, area V5 receives input from the thick stripes of V2. V4 and V5 are we ...
... The experiments reported here reveal no further divergence between these channels: both types of V4 subcompartment make rather similar patterns of connection with further visual areas and subcortical structures. In contrast to V4, area V5 receives input from the thick stripes of V2. V4 and V5 are we ...
Task demands determine the specificity of the search template Mary
... observers searched for a line oriented at 55 degrees among lines oriented at 50 degrees. Using a physiologically plausible model, the authors demonstrated that 55and 50-degree lines are best discriminated by a feature detector tuned to 60 degrees. They then showed that observers do indeed use a 60- ...
... observers searched for a line oriented at 55 degrees among lines oriented at 50 degrees. Using a physiologically plausible model, the authors demonstrated that 55and 50-degree lines are best discriminated by a feature detector tuned to 60 degrees. They then showed that observers do indeed use a 60- ...
Clinicopathological characteristics of patients with amyotrophic
... gene mutation [9]. Further study showed that need for TIV, impaired oculomotor movement, and becoming totally quadriplegic within 24 months of ALS onset were predictors of severe communication impairment. Therefore, we recommended early detection of impaired communication and identification of the b ...
... gene mutation [9]. Further study showed that need for TIV, impaired oculomotor movement, and becoming totally quadriplegic within 24 months of ALS onset were predictors of severe communication impairment. Therefore, we recommended early detection of impaired communication and identification of the b ...
Large-Field Visual Motion Directly Induces an Involuntary Rapid
... make the trajectory as straight as possible. The protocol and visual stimuli were exactly the same as in experiment 1. Experiment 7. We tested two stimulus speeds, 0.7 and 0.07 m/s, in separate experimental sets. The experimental protocol was exactly the same as in experiment 1 except for the number ...
... make the trajectory as straight as possible. The protocol and visual stimuli were exactly the same as in experiment 1. Experiment 7. We tested two stimulus speeds, 0.7 and 0.07 m/s, in separate experimental sets. The experimental protocol was exactly the same as in experiment 1 except for the number ...
Impairment of episodic and semantic autobiographical memory in
... The diagnosis of aMCI was defined by the Mayo criteria (Petersen et al., 1999), which includes the presence of a memory complaint (corroborated by an informant), impaired memory function for age and education (delayed word recall score >1 standard deviation below normal age- and education-matched mea ...
... The diagnosis of aMCI was defined by the Mayo criteria (Petersen et al., 1999), which includes the presence of a memory complaint (corroborated by an informant), impaired memory function for age and education (delayed word recall score >1 standard deviation below normal age- and education-matched mea ...
Rhythms for Cognition: Communication through
... effective connectivity and the phase relation for pairs of recording sites in visual cortex of awake cats and monkeys (Womelsdorf et al., 2007). For each trial, the phase relation between gamma rhythms at the two recording sites was determined, and trials were sorted accordingly into phase-relation ...
... effective connectivity and the phase relation for pairs of recording sites in visual cortex of awake cats and monkeys (Womelsdorf et al., 2007). For each trial, the phase relation between gamma rhythms at the two recording sites was determined, and trials were sorted accordingly into phase-relation ...
Visual Experience Is Necessary for Maintenance But Not
... throughout postnatal development can also result in enlarged cortical RFs, as defined electrophysiologically (Fagiolini et al. 1994). An alternative explanation for these results, however, is that the enlarged RFs in deprived animals result not from preservation of an early, unrefined state, but fro ...
... throughout postnatal development can also result in enlarged cortical RFs, as defined electrophysiologically (Fagiolini et al. 1994). An alternative explanation for these results, however, is that the enlarged RFs in deprived animals result not from preservation of an early, unrefined state, but fro ...
Is Cell Death Primary or Secondary in the Pathophysiology of
... shown by others in DLB and Parkinson’s disease [41,50]. Looking at postsynaptic markers, an almost complete loss of drebrin was observed. Drebrin is an f-actin-binding postsynaptic protein known to be involved in the formation of dendritic spines [51]. By visualizing the dendritic tree of single cel ...
... shown by others in DLB and Parkinson’s disease [41,50]. Looking at postsynaptic markers, an almost complete loss of drebrin was observed. Drebrin is an f-actin-binding postsynaptic protein known to be involved in the formation of dendritic spines [51]. By visualizing the dendritic tree of single cel ...
Linking reward expectation to behavior in the basal ganglia
... stimulus in the BST task not also do so in this second task? Indeed, in both tasks, a reward is expected if the contralateral stimulus appears. The answer, it seems, has to do with another form of uncertainty. The second task eliminated uncertainty not only about which eye movement would be made, bu ...
... stimulus in the BST task not also do so in this second task? Indeed, in both tasks, a reward is expected if the contralateral stimulus appears. The answer, it seems, has to do with another form of uncertainty. The second task eliminated uncertainty not only about which eye movement would be made, bu ...
ManuscriptPTA_R1_FINAL - Spiral
... within the Default Mode Network can be assessed using resting state functional magnetic resonance imaging, which can be acquired in confused patients unable to perform tasks in the scanner. Here we used this approach to test the hypothesis that the mnemonic symptoms of post-traumatic amnesia are cau ...
... within the Default Mode Network can be assessed using resting state functional magnetic resonance imaging, which can be acquired in confused patients unable to perform tasks in the scanner. Here we used this approach to test the hypothesis that the mnemonic symptoms of post-traumatic amnesia are cau ...
interactions between number and space in parietal cortex
... representation that is shared by the programming of a hand, eye or attention movement). However, so far, no study has sufficiently shown whether these reference frames are eye- or world-centred. Another related question concerns the stage of processing at which spatial–numerical interactions arise; ...
... representation that is shared by the programming of a hand, eye or attention movement). However, so far, no study has sufficiently shown whether these reference frames are eye- or world-centred. Another related question concerns the stage of processing at which spatial–numerical interactions arise; ...
Smooth Pursuit Impairment in Schizophrenia— What Does It Mean?
... with respect to the finding of Brezinova and Kendell (1977), it is of interest that stress, fatigue, or moderate distraction did not impair tracking. Smooth pursuit in this study was only impaired when subjects had to do a difficult mental calculation (serially subtracting 13 from 200) and write dow ...
... with respect to the finding of Brezinova and Kendell (1977), it is of interest that stress, fatigue, or moderate distraction did not impair tracking. Smooth pursuit in this study was only impaired when subjects had to do a difficult mental calculation (serially subtracting 13 from 200) and write dow ...
Models of Information Processing in the Visual Cortex
... biologically accurate. We do so, because science is yet to provide a full understanding of the brain, thus it is not possible to propose accurate overall models of data. The chapter rather gives an overview of different kinds of models of vision present in the literature, whether they are biological ...
... biologically accurate. We do so, because science is yet to provide a full understanding of the brain, thus it is not possible to propose accurate overall models of data. The chapter rather gives an overview of different kinds of models of vision present in the literature, whether they are biological ...
Vision
... Analysis of Visual Information: Role of the Visual Association Cortex Extrastriate cortex: A region of the visual association cortex; receives fibers from the striate cortex and from the superior colliculi and projects to the inferior temporal cortex. Regions respond to particular features o ...
... Analysis of Visual Information: Role of the Visual Association Cortex Extrastriate cortex: A region of the visual association cortex; receives fibers from the striate cortex and from the superior colliculi and projects to the inferior temporal cortex. Regions respond to particular features o ...
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 ...