Computer Simulation

31.

A comparison of psychophysical procedures for level-discrimination thresholds.

Five different psychophysical procedures were used to measure level-discrimination (also called intensity discrimination) thresholds for 1-kHz tones at two levels (30 and 90 dB SPL) and two durations (10 and 500 ms). The procedures were the classic ...
Peter Marvit, Mary Florentine, Søren Buus (J Acoust Soc Am, 200306)
comparison-psychophysical-procedures-level-discrimination-thresholds.asp

32.

A lay person versus a trained endoscopist: can the preop endoscopy simulator detect a difference?

The purpose of this study was to establish construct validation of a flexible sigmoidoscopy simulator by comparing training-level grouped subjects. These included clerical staff (n = 10), residents (n = 19), and experts (n = 5). Each participant ...
J MacDonald, J Ketchum, R G Williams, L Q Rogers (Surg Endosc, 200306)
lay-person-versus-trained-endoscopist-preop-endoscopy-simulator.asp

33.

A direct comparison of ERCP teaching models.

BACKGROUND: Several teaching models for ERCP are now available. Live, anesthetized porcine models have been used for many years, but harvested porcine organ preparations have recently been developed, and computer-based endoscopy simulators now ...
Robert Sedlack, Bret Petersen, Kenneth Binmoeller, Joseph Kolars (Gastrointest Endosc, 200306)
direct-comparison-ercp-teaching-models.asp

34.

Prediction of single-pool Kt/v based on clinical and hemodialysis variables using multilinear regression, tree-based modeling, and artificial neural networks.

The impact of clinical and other variables on single-pool Kt/V (spKt/V) is unclear. The goal of this study was to identify clinical and hemodialysis treatment related predictors of spKt/V and use multilinear regression (LM), tree-based modeling (TBM), ...
Alexander Goldfarb-Rumyantzev, Michael H Schwenk, Samuel Liu, Chaim Charytan, Bruce S Spinowitz (Artif Organs, 200306)
prediction-single-pool-kt-v-based-clinical-hemodialysis-variables.asp

35.

The diagnosis of neurological disorders in older adults.

Are neurological disorders overdiagnosed in older adults? Previous reports suggest that age bias may lead to diagnostic inaccuracies for older adult clients. In the present study, the average test scores for community-dwelling 38-year-old and 74-year-old ...
Howard N Garb, Patricia A Boyle (Assessment, 200306)
diagnosis-neurological-disorders-older-adults.asp

36.

Human theta oscillations related to sensorimotor integration and spatial learning.

oscillations in the rat hippocampus have been implicated in sensorimotor integration (Bland, 1986), especially during exploratory and wayfinding behavior. We propose that human cortical activity coordinates sensory information with a motor plan to guide ...
Jeremy B Caplan, Joseph R Madsen, Andreas Schulze-Bonhage, Richard Aschenbrenner-Scheibe, Ehren L Newman, Michael J Kahana (J Neurosci, 200306)
human-theta-oscillations-related-sensorimotor-integration-spatial.asp

37.

Rhythmic oscillations in the performance of a sustained attention task.

Attempts to sustain a narrow focus of attention over a long period of time are effortful and are punctuated by lapses. Most studies of sustained attention performance obscure the presence and pattern oflapses by reporting measures that are summed across ...
Kevin J Smith, Dominic A Valentino, James E Arruda (J Clin Exp Neuropsychol, 200306)
rhythmic-oscillations-performance-sustained-attention-task.asp

38.

Use of the evoked potential P3 component for control in a virtual apartment.

Virtual reality (VR) may prove useful for training individuals to use a brain-computer interface (BCI). It could provide complex and controllable experimental environments during BCI research and development as well as increase user motivation. In the ...
Jessica D Bayliss (IEEE Trans Neural Syst Rehabil Eng, 200306)
evoked-potential-p-component-control-virtual-apartment.asp

39.

Self-organizing neural integrator predicts interval times through climbing activity.

Mammals can reliably predict the time of occurrence of an expected event after a predictive stimulus. Climbing activity is a prominent profile of neural activity observed in prefrontal cortex and other brain areas that is related to the anticipation of ...
Daniel Durstewitz (J Neurosci, 200306)
self-organizing-neural-integrator-predicts-interval-times-climbing.asp

40.

Automatic landmark extraction from image data using modified growing neural gas network.

A new method for automatic landmark extraction from MR brain images is presented. In this method, landmark extraction is accomplished by modifying growing neural gas (GNG), which is a neural-network-based cluster-seeking algorithm. Using modified GNG ...
Emad Fatemizadeh, Caro Lucas, Hamid Soltanian-Zadeh (IEEE Trans Inf Technol Biomed, 200306)
automatic-landmark-extraction-image-data-modified-growing-neural-gas.asp