Computer Simulation

21.

Can virtual reality be used to investigate persecutory ideation?

The use of virtual reality permits individuals reactions to standard controlled environments to be studied. It may therefore provide a means for understanding the interpretations of experience relevant to clinical disorders. The use of this technology ...
Daniel Freeman, Mel Slater, Paul E Bebbington, Philippa A Garety, Elizabeth Kuipers, David Fowler, Alican Met, Cristina M Read, Joel Jordan, Vinoba Vinayagamoorthy (J Nerv Ment Dis, 200308)
virtual-reality-investigate-persecutory-ideation.asp

22.

Computational study of enhanced excitability in Hermissenda: membrane conductances modulated by 5-HT.

Serotonin (5-HT) applied to the exposed but otherwise intact nervous system results in enhanced excitability of Hermissenda type-B photoreceptors. Several ion currents in the type-B photoreceptors are modulated by 5-HT, including the A-type K+ current ...
Yidao Cai, Douglas A Baxter, Terry Crow (J Comput Neurosci, 200307-08)
computational-study-enhanced-excitability-hermissenda-membrane.asp

23.

Predicting the threshold of single-pulse electrical stimuli using a stochastic auditory nerve model: the effects of noise.

An important factor that may play a role in speech recognition by individuals with cochlear implants is that electrically stimulated nerves respond with a much higher level of synchrony than is normally observed in acoustically stimulated nerves. Recent ...
Yifang Xu, Leslie M Collins (IEEE Trans Biomed Eng, 200307)
predicting-threshold-single-pulse-electrical-stimuli-stochastic.asp

24.

Effects of simulated cochlear-implant processing on speech reception in fluctuating maskers.

This study investigated the effects of simulated cochlear-implant processing on speech reception in a variety of complex masking situations. Speech recognition was measured as a function of target-to-masker ratio, processing condition (4, 8, 24 channels, ...
Michael K Qin, Andrew J Oxenham (J Acoust Soc Am, 200307)
effects-simulated-cochlear-implant-processing-speech-reception.asp

25.

The human action recognition system and its relationship to Brocas area: an fMRI study.

Primate studies have identified populations of neurons that are capable of action recognition. These "mirror neurons" show spiking activity both when the monkey executes or observes a grasping movement. These neurons are located in the ventral premotor ...
Farsin Hamzei, Michel Rijntjes, Christian Dettmers, Volkmar Glauche, Cornelius Weiller, Christian Büchel (Neuroimage, 200307)
human-action-recognition-system-relationship-broca-s-area-fmri-study.asp

26.

A two-stage unsupervised learning algorithm reproduces multisensory enhancement in a neural network model of the corticotectal system.

Multisensory enhancement (MSE) is the augmentation of the response to sensory stimulation of one modality by stimulation of a different modality. It has been described for multisensory neurons in the deep superior colliculus (DSC) of mammals, which ...
Thomas J Anastasio, Paul E Patton (J Neurosci, 200307)
two-stage-unsupervised-learning-algorithm-reproduces-multisensory.asp

27.

Workers decisions to take-up offered health insurance coverage: assessing the importance of out-of-pocket premium costs.

BACKGROUND: Many proposed policy initiatives involve subsidies directed toward encouraging employers to offer coverage and toward workers to encourage enrollment in offered plans. Given that insurance coverage reflects employers decisions to offer ...
Philip F Cooper, Jessica Vistnes (Med Care, 200307)
workers-decisions-take-up-offered-health-insurance-coverage-assessing.asp

28.

Abstraction and reformulation in artificial intelligence.

This paper contributes in two ways to the aims of this special issue on abstraction. The first is to show that there are compelling reasons motivating the use of abstraction in the purely computational realm of artificial intelligence. The second is to ...
Robert C Holte, Berthe Y Chouiery (Philos Trans R Soc Lond B Biol Sci, 200307)
abstraction-reformulation-artificial-intelligence.asp

29.

Abstract and associatively based representations in human sequence learning.

We give an analysis of performance in an artificial neural network for which the claim had been made that it could learn abstract representations. Our argument is that this network is associative in nature, and cannot develop abstract representations. ...
Rainer Spiegel, I P L McLaren (Philos Trans R Soc Lond B Biol Sci, 200307)
abstract-associatively-based-representations-human-sequence-learning.asp

30.

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