Cognition

111.

Tasks of a feather flock together: similarity effects in task switching.

Recent research on task switching has paid little attention to how tasks are represented and how the relations between task representations might affect the executive processes engaged to achieve a task switch. Two experiments investigated the effect of ...
Catherine M Arrington, Erik M Altmann, Thomas H Carr (Mem Cognit, 200307)
tasks-feather-flock-together-similarity-effects-task-switching.asp

112.

The natural appearance of unnatural incline speed.

In three experiments, college students provided judgments about a marbles speed along a nonlinear incline. Each experiment revealed widespread support for the slope-speed belief, a mistaken belief holding that an objects speed at any point depends on the ...
Doug Rohrer (Mem Cognit, 200307)
natural-appearance-unnatural-incline-speed.asp

113.

Cognitive support at encoding attenuates age differences in recollective experience among adults of lower frontal lobe function.

Free recall and recollective experience were investigated in relation to low and high cognitive support at encoding and to neuropsychological measures of frontal lobe function (FLF) in 105 healthy adults divided into 3 age groups (young, young-old, old). ...
David Bunce (Neuropsychology, 200307)
cognitive-support-encoding-attenuates-age-differences-recollective.asp

114.

Behavioral changes associated with deep brain stimulation surgery for Parkinsons disease.

Evaluation for psychiatric and cognitive dysfunction is a crucial part of preoperative assessment for deep brain stimulation (DBS) surgery. All candidates for DBS should be treated for active psychiatric disorders, and the treatment team should also ...
Karen E Anderson, Jake Mullins (Curr Neurol Neurosci Rep, 200307)
behavioral-changes-associated-deep-brain-stimulation-surgery.asp

115.

The neuropsychological profiles of mild Alzheimers disease and questionable dementia as compared to age-related cognitive decline.

Test scores from a comprehensive neuropsychological battery administered to 1602 subjects consisting of 1347 subjects with probable Alzheimers disease (AD), 100 subjects with questionable dementia (QD) and 155 non-demented elderly control subjects were ...
Elise Caccappolo-Van Vliet, Jennifer Manly, Ming-Xin Tang, Karen Marder, Karen Bell, Yaakov Stern (J Int Neuropsychol Soc, 200307)
neuropsychological-profiles-mild-alzheimer-s-disease-questionable.asp

116.

Neuropsychological deficits associated with Alzheimers disease in the very-old: discrepancies in raw vs. standardized scores.

The profiles of neuropsychological deficits associated with Alzheimers disease (AD) in Young-Old (M age and 70) and Very-Old (M age > 80) patients were compared, along with possible modifying effects of apolipoprotein E (APOE) genotype on these profiles. ...
Mark W Bondi, Wes S Houston, David P Salmon, Jody Corey-Bloom, Robert Katzman, Leon J Thal, Dean C Delis (J Int Neuropsychol Soc, 200307)
neuropsychological-deficits-associated-alzheimer-s-disease-old.asp

117.

Sensing the invisible: differential sensitivity of visual cortex and amygdala to traumatic context.

To what extent does emotional traumatic context affect sensory processing in the brain? A striking example of emotional impact on sensation is manifested in posttraumatic stress disorder (PTSD), in which a severe emotional trauma produces recurrent and ...
Talma Hendler, Pia Rotshtein, Yaara Yeshurun, Tal Weizmann, Itamar Kahn, Dafna Ben-Bashat, Rafael Malach, Avi Bleich (Neuroimage, 200307)
sensing-invisible-differential-sensitivity-visual-cortex-amygdala.asp

118.

A novel method for noninvasive detection of neuromodulatory changes in specific neurotransmitter systems.

Over the last decade, it has become possible to study theories of cognition using positron emission tomography (PET) and functional magnetic resonance imaging (fMRI). These methods yield statistical parametric maps of changes in cerebral blood flow (CBF) ...
Nathaniel M Alpert, Rajendra D Badgaiyan, Elijahu Livni, Alan J Fischman (Neuroimage, 200307)
novel-method-noninvasive-detection-neuromodulatory-changes-specific.asp

119.

Experimental evaluation of iterative reconstruction versus filtered back projection for 3D [15O]water PET activation studies using statistical parametric mapping analysis.

Iterative reconstructions are increasingly used for clinical PET studies owing to the better noise properties compared with filtered backprojection (FBP). The purpose of the present study was to compare ordered subsets expectation maximization (OSEM) ...
Catalina T Mesina, Ronald Boellaard, Geurt Jongbloed, Aad W van der Vaart, Adriaan A Lammertsma (Neuroimage, 200307)
experimental-evaluation-iterative-reconstruction-versus-filtered-back.asp

120.

Cognitive reserve modulates functional brain responses during memory tasks: a PET study in healthy young and elderly subjects.

Cognitive reserve (CR) is the ability of an individual to cope with advancing brain pathology so that he remains free of symptomatology. Epidemiological evidence and in vivo neurometabolic data suggest that CR may be mediated through education or IQ. The ...
Nikolaos Scarmeas, Eric Zarahn, Karen E Anderson, John Hilton, Joseph Flynn, Ronald L Van Heertum, Harold A Sackeim, Yaakov Stern (Neuroimage, 200307)
cognitive-reserve-modulates-functional-brain-responses-memory-tasks.asp