Reaction Time

61.

EMG responses evoked by the termination of galvanic (DC) vestibular stimulation: off-responses.

OBJECTIVE: Vestibular responses in soleus electromyography (EMG) evoked by the sudden onset of galvanic (DC) stimulation (on-responses) have been described in detail previously. The aim of the present study was to describe responses in soleus triggered ...
S R D Watson, M S Welgampola, J G Colebatch (Clin Neurophysiol, 200308)
emg-responses-evoked-termination-galvanic-dc-vestibular-stimulation-.asp

62.

Influence of stimulus intensity on waveform of sympathetic skin response evoked by magnetic stimulation.

OBJECTIVE: The aim of this study was to investigate the influence of stimulus intensity on the waveform of sympathetic skin response (SSR). The origin of the SSR waveform was discussed. METHODS: A total of 12 SSRs from palm skin were analyzed in 40 ...
Minoru Toyokura (Clin Neurophysiol, 200308)
influence-stimulus-intensity-waveform-sympathetic-skin-response.asp

63.

Functional anatomy and differential time courses of neural processing for explicit, inferred, and illusory contours. An event-related fMRI study.

The perception of shape does not necessarily require viewing an explicit outline figure. Using event-related functional magnetic resonance imaging we examined the time courses of neural activations provoked by shapes defined by (1) lines, (2) illusory ...
Afra Ritzl, John C Marshall, Peter H Weiss, Oliver Zafiris, Nadim J Shah, Karl Zilles, Gereon R Fink (Neuroimage, 200308)
functional-anatomy-differential-time-courses-neural-processing.asp

64.

Infectious HIV-1 assembles in late endosomes in primary macrophages.

Although human immunodeficiency virus type 1 (HIV-1) is generally thought to assemble at the plasma membrane of infected cells, virions have been observed in intracellular compartments in macrophages. Here, we investigated virus assembly in ...
Annegret Pelchen-Matthews, Beatrice Kramer, Mark Marsh (J Cell Biol, 200308)
infectious-hiv-assembles-late-endosomes-primary-macrophages.asp

65.

Influence of cholinergic circuitries in generation of high-frequency somatosensory evoked potentials.

OBJECTIVE: High-frequency oscillations (HFOs) evoked by upper limb stimulation reflect highly synchronised spikes generated in the somatosensory human system. Since acetylcholine produces differential modulation in subgroups of neurons, we would ...
D Restuccia, G Della Marca, M Valeriani, M Rubino, N Paciello, C Vollono, A Capuano, P Tonali (Clin Neurophysiol, 200308)
influence-cholinergic-circuitries-generation-high-frequency.asp

66.

Coherent interaction of dynamical attractors for object-based selective attention.

I investigate essential neuronal mechanisms of visual attention based on object-based theory and a biased-competition scheme. A neural network model is proposed that consists of two feature networks, FI and FII, and one object network, OJ. The FI and FII ...
Osamu Hoshino (Biol Cybern, 200308)
coherent-interaction-dynamical-attractors-object-based-selective.asp

67.

Effects of attention and emotion on repetition priming and their modulation by cholinergic enhancement.

We examined whether behavioral and neural effects of repeating faces are modulated by independent factors of selective attention, emotion, and cholinergic enhancement, during functional MRI. Face repetition occurred either between task-relevant ...
Paul Bentley, Patrik Vuilleumier, Christiane M Thiel, Jon Driver, Raymond J Dolan (J Neurophysiol, 200308)
effects-attention-emotion-repetition-priming-modulation-cholinergic.asp

68.

The effects of carbon dioxide in champagne on psychometric performance and blood-alcohol concentration.

AIMS: To assess the effects of carbon dioxide (CO(2)) in champagne on psychomotor performance and blood-alcohol concentration (BAC). METHODS: Twelve subjects consumed ethanol (0.6 g/kg body weight) served as champagne or champagne with the CO(2) removed, ...
Fran Ridout, Stuart Gould, Carlo Nunes, Ian Hindmarch (Alcohol Alcohol, 200307-08)
effects-carbon-dioxide-champagne-psychometric-performance-blood.asp

69.

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

70.

Waiting for ON: a major problem in patients with Parkinson disease and ON/OFF motor fluctuations.

The authors compared the two portions of the OFF period in patients with Parkinson disease and response fluctuations: time to ON (the latency from levodopa intake to turning ON) and wearing off (time from termination of the beneficial dose effect until ...
Doron Merims, Ruth Djaldetti, Eldad Melamed (Clin Neuropharmacol, 200307-08)
waiting-major-problem-patients-parkinson-disease-off-motor.asp