Computer Simulation

11.

Multisensory integration during motor planning.

When planning goal-directed reaches, subjects must estimate the position of the arm by integrating visual and proprioceptive signals from the sensory periphery. These integrated position estimates are required at two stages of motor planning: first to ...
Samuel J Sober, Philip N Sabes (J Neurosci, 200308)
multisensory-integration-motor-planning.asp

12.

A kinematic theory of rapid human movement. Part IV: a formal mathematical proof and new insights.

A few years ago a kinematic theory was proposed to study and analyze rapid human movements. The theory relies on a model of a synergy made up of two neuromuscular systems, one agonist and the other antagonist to the movement. Representing these systems ...
Réjean Plamondon, Chunhua Feng, Anna Woch (Biol Cybern, 200308)
kinematic-theory-rapid-human-movement-part-iv-formal-mathematical.asp

13.

Simulation laboratories for training in obstetrics and gynecology.

Simulations have been used by the military, airline industry, and our colleagues in other medical specialties to educate, evaluate, and prepare for rare but life-threatening scenarios. Work hour limits for residents in obstetrics and gynecology and ...
Christian R Macedonia, Robert B Gherman, Andrew J Satin (Obstet Gynecol, 200308)
simulation-laboratories-training-obstetrics-gynecology.asp

14.

Coding of the contrasts in natural images by populations of neurons in primary visual cortex (V1).

It is possible to discriminate between grating contrasts over a 300-fold contrast range, whereas V1 neurons have very limited dynamic ranges. Using populations of model neurons with contrast-response parameters taken from electrophysiological studies ...
P L Clatworthy, M Chirimuuta, J S Lauritzen, D J Tolhurst (Vision Res, 200308)
coding-contrasts-natural-images-populations-neurons-primary-visual.asp

15.

Actively tracking passive stability in a ball bouncing task.

This study investigates the control involved in a task where subjects rhythmically bounce a ball with a hand-held racket as regularly as possible to a prescribed amplitude. Stability analyses of a kinematic model of the ball-racket system revealed that ...
Aymar de Rugy, Kunlin Wei, Hermann Müller, Dagmar Sternad (Brain Res, 200308)
actively-tracking-passive-stability-ball-bouncing-task.asp

16.

Simulation-based medical education: an ethical imperative.

Medical training must at some point use live patients to hone the skills of health professionals. But there is also an obligation to provide optimal treatment and to ensure patients safety and well-being. Balancing these two needs represents a ...
Amitai Ziv, Paul Root Wolpe, Stephen D Small, Shimon Glick (Acad Med, 200308)
simulation-based-medical-education-ethical-imperative.asp

17.

Evolution of indirect reciprocity by social information: the role of trust and reputation in evolution of altruism.

The complexity of humans cooperative behavior cannot be fully explained by theories of kin selection and group selection. If reciprocal altruism is to provide an explanation for altruistic behavior, it would have to depart from direct reciprocity, which ...
Mojdeh Mohtashemi, Lik Mui (J Theor Biol, 200308)
evolution-indirect-reciprocity-social-information-role-trust.asp

18.

Mixed blocked/event-related designs separate transient and sustained activity in fMRI.

Recent functional magnetic resonance imaging (fMRI) studies using mixed blocked/event-related designs have shown activity consistent with separable sustained task-related processes and transient trial-related processes. In the mixed design, control ...
Kristina M Visscher, Francis M Miezin, James E Kelly, Randy L Buckner, David I Donaldson, Mark P McAvoy, Vidya M Bhalodia, Steven E Petersen (Neuroimage, 200308)
mixed-blocked-event-related-designs-separate-transient-sustained.asp

19.

External validity of predictive models: a comparison of logistic regression, classification trees, and neural networks.

BACKGROUND AND OBJECTIVE: The utility of predictive models depends on their external validity, that is, their ability to maintain accuracy when applied to patients and settings different from those on which the models were developed. We report a ...
Norma Terrin, Christopher H Schmid, John L Griffith, Ralph B DAgostino, Harry P Selker (J Clin Epidemiol, 200308)
external-validity-predictive-models-comparison-logistic-regression.asp

20.

A feature-based model of symmetry detection.

Symmetry detection is important for many biological visual systems, including those of mammals, insects and birds. We constructed a symmetry-detection algorithm with two stages: location of the visually salient features of the image, then evaluating the ...
Renata Scognamillo, Gillian Rhodes, Concetta Morrone, David Burr (Proc R Soc Lond B Biol Sci, 200308)
feature-based-model-symmetry-detection.asp