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Articles 31 - 37 of 37
Full-Text Articles in Medicine and Health Sciences
Micrornas (Mirnas) In Neurodegenerative Diseases, Peter T. Nelson, Wang-Xia Wang, Bernard W. Rajeev
Micrornas (Mirnas) In Neurodegenerative Diseases, Peter T. Nelson, Wang-Xia Wang, Bernard W. Rajeev
Sanders-Brown Center on Aging Faculty Publications
Aging-related neurodegenerative diseases (NDs) are the culmination of many different genetic and environmental influences. Prior studies have shown that RNAs are pathologically altered during the inexorable course of some NDs. Recent evidence suggests that microRNAs (miRNAs) may be a contributing factor in neurodegeneration. miRNAs are brain-enriched, small (~22 nucleotides) non-coding RNAs that participate in mRNA translational regulation. Although discovered in the framework of worm development, miRNAs are now appreciated to play a dynamic role in many mammalian brain-related biochemical pathways, including neuroplasticity and stress responses. Research about miRNAs in the context of neurodegeneration is accumulating rapidly, and the goal of …
Determinism And The Death Of Folk Psychology: Two Challenges To Responsibility From Neuroscience, Stephen J. Morse
Determinism And The Death Of Folk Psychology: Two Challenges To Responsibility From Neuroscience, Stephen J. Morse
All Faculty Scholarship
No abstract provided.
Searching For The Majority: Algorithms Of Voluntary Control., Jin Fan, Kevin G. Guise, Xun Liu, Hongbin Wang
Searching For The Majority: Algorithms Of Voluntary Control., Jin Fan, Kevin G. Guise, Xun Liu, Hongbin Wang
Journal Articles
Voluntary control of information processing is crucial to allocate resources and prioritize the processes that are most important under a given situation; the algorithms underlying such control, however, are often not clear. We investigated possible algorithms of control for the performance of the majority function, in which participants searched for and identified one of two alternative categories (left or right pointing arrows) as composing the majority in each stimulus set. We manipulated the amount (set size of 1, 3, and 5) and content (ratio of left and right pointing arrows within a set) of the inputs to test competing hypotheses …
Dependence In Prestroke Mobility Predicts Adverse Outcomes Among Patients With Acute Ischemic Stroke, Mary I. Dallas, Shari Rone-Adams, John L. Echternach, Lawrence M. Bass, Dawn M. Bravata
Dependence In Prestroke Mobility Predicts Adverse Outcomes Among Patients With Acute Ischemic Stroke, Mary I. Dallas, Shari Rone-Adams, John L. Echternach, Lawrence M. Bass, Dawn M. Bravata
Rehabilitation Sciences Faculty Publications
Background and Purpose - Stroke survivors are commonly dependent in activities of daily living; however, the relation between prestroke mobility impairment and poststroke outcomes is poorly understood. The primary objective of this study was to evaluate the association between prestroke mobility impairment and 4 poststroke outcomes. The secondary objective was to evaluate the association between prestroke mobility impairment and a plan for physical therapy.
Methods - This was a secondary analysis of the National Stroke Project data, a retrospective cohort of Medicare beneficiaries who were hospitalized with an acute ischemic stroke (1998 to 2001). Logistic-regression modeling was used to examine …
Stressor- And Corticotropin Releasing Factor-Induced Reinstatement And Active Stress-Related Behavioral Responses Are Augmented Following Long-Access Cocaine Self-Administration By Rats, John R. Mantsch, David A. Baker, David M. Francis, Eric S. Katz, Michael A. Hoks, Joseph P. Serge
Stressor- And Corticotropin Releasing Factor-Induced Reinstatement And Active Stress-Related Behavioral Responses Are Augmented Following Long-Access Cocaine Self-Administration By Rats, John R. Mantsch, David A. Baker, David M. Francis, Eric S. Katz, Michael A. Hoks, Joseph P. Serge
Biomedical Sciences Faculty Research and Publications
Rationale Stressful events during periods of drug abstinence likely contribute to relapse in cocaine-dependent individuals. Excessive cocaine use may increase susceptibility to stressor-induced relapse through alterations in brain corticotropin-releasing factor (CRF) responsiveness.
Objectives This study examined stressor- and CRF-induced cocaine seeking and other stress-related behaviors in rats with different histories of cocaine self-administration (SA).
Materials and methods Rats self-administered cocaine under short-access (ShA; 2 h daily) or long-access (LgA; 6 h daily) conditions for 14 days or were provided access to saline and were tested for reinstatement by a stressor (electric footshock), cocaine or an icv injection of CRF and …
Dominance Of The Proximal Coordinate Frame In Determining The Locations Of Hippocampal Place Cell Activity During Navigation, Jennifer J Siegel, Joshua P Neunuebel, James J Knierim
Dominance Of The Proximal Coordinate Frame In Determining The Locations Of Hippocampal Place Cell Activity During Navigation, Jennifer J Siegel, Joshua P Neunuebel, James J Knierim
Journal Articles
The place-specific activity of hippocampal cells provides downstream structures with information regarding an animal's position within an environment and, perhaps, the location of goals within that environment. In rodents, recent research has suggested that distal cues primarily set the orientation of the spatial representation, whereas the boundaries of the behavioral apparatus determine the locations of place activity. The current study was designed to address possible biases in some previous research that may have minimized the likelihood of observing place activity bound to distal cues. Hippocampal single-unit activity was recorded from six freely moving rats as they were trained to perform …
Bimanual Coupling In Left And Right Space: Which Hand Is Yoked To Which?, Gavin Buckingham, Gordon Binsted, David Carey
Bimanual Coupling In Left And Right Space: Which Hand Is Yoked To Which?, Gavin Buckingham, Gordon Binsted, David Carey
Gavin Buckingham
• Reaching across the body into contralateral space with one hand incurs a substantial cost on various measures of performance, compared to ipsilateral reaches of a similar amplitude (Carey, Hargreaves, & Goodale, 1996).
• When reaching with both hands, unimanual asymmetries disappear.
-The hands take off and land concurrently (Kelso, Southard, & Goodman, 1979).
• To test if this ‘yoking’ is driven by the left or the right hand, participants performed reaches of different amplitudes.
• These reaches were made to the left or right side of space.
-Further increasing the unimanual (baseline) asymmetries that get wiped out by the …