Showing papers in "Clinical Neurophysiology in 2002"

TL;DR: With adequate recognition and effective engagement of all issues, BCI systems could eventually provide an important new communication and control option for those with motor disabilities and might also give those without disabilities a supplementary control channel or a control channel useful in special circumstances.

TL;DR: This new approach to head modeling performed significantly better than a simple spherical shell approximation, especially in basal brain areas, including the temporal lobe, as compared to individually derived models.

TL;DR: The 6-9 Hz band is a useful alpha-range band from the end of the first year of life into early childhood and complement other research relating the infant central rhythm with the adult sensorimotor mu rhythm.

TL;DR: The variability and other characteristics of the motor evoked potential to transcranial magnetic stimulation in a large database should be useful for planning, analyzing, and interpreting TMS studies in healthy and patient populations.

TL;DR: The issues of ischemia, mechanical trauma, ectopic impulse generation, demyelination, tendonitis, elevated carpal tunnel pressure, mechanical factors, small and large fiber involvement and the variability of symptoms are presented.

TL;DR: Evaluated central auditory system maturation based dipole modeling of multi-electrode long-latency AEPs recordings demonstrated the independence of the T-complex components, represented in the radial dipoles, from the P1, N1b, and P2 components, contained in the tangentially oriented dipole sources.

TL;DR: This study confirms that female gender, obesity and age are independent RF for CTS, and indicates that DM may be a weak RF, especially among women.

TL;DR: The main thrust of this review is to critically evaluate the utility of frequency analysis techniques in the investigation of pathophysiological mechanisms in the motor system and as a diagnostic tool.

TL;DR: The results indicated that children's N1 is composed of differently weighted components as that in adults, and that in both children and adults the N1 and N2 are generated by anatomically distinct generators.

TL;DR: The results of the present study confirm the hypothesis that differences between go and nogo event-related potentials are not dependent on overt movement- related potentials.

TL;DR: Recent evidence suggests perfusion contrast is suitable for studying relatively long term effects on CBF both at rest or during activation, and new developments in combining or simultaneously measuring the electrophysiological and fMRI signals allow a new class of studies that capitalize on dynamic imaging with high spatiotemporal resolution.

TL;DR: This review provides an estimate of algorithm accuracy and comparison to that of human experts as well as novel methods including neural networks and high-resolution frequency methods.

TL;DR: A bootstrap-based method is presented which gives time-frequency maps showing only significant changes of ERD or ERS in predetermined frequency bands, demonstrating how easily reactive channels and their spatio-temporal and frequency-specific characteristics can be identified by means of this method.

TL;DR: Results suggest that electrodes should be positioned over the lower portion of the muscle and not the mid-point, which has been commonly used in previous studies.

TL;DR: The age-related decrease in sleep spindles and K-complex density is consistent with previous reports and may be interpreted as an age- related alteration of thalamocortical regulatory mechanisms.

TL;DR: Combined SEP/MEP methods may enhance the impact of neuromonitoring on the intra-operative management of the patient and favourably influence neurological outcome, and provide a safe, reliable and sensitive method of monitoring spinal cord function in orthopaedic surgery.

TL;DR: Investigation in affected and unaffected motor areas in the acute stage after stroke and during the early period of recovery found changes in motor disinhibition on unaffected side also are related to motor recovery.

TL;DR: Subthreshold low frequency rTMS depresses cortical excitability beyond the duration of the train, which seems primarily due to cortical dysfacilitation.

TL;DR: These findings demonstrate that very early stages of processing can be modified by top-down attentional influences across a range of ages and experimental paradigms, concordant with visual processing models showing very rapid and dispersed activation with feedback at early cortical levels.

TL;DR: Active MPs affect neural function in humans and do so as a function of exposure duration, and the temporal nature of this effect may contribute to the lack of consistent results reported in the literature.

TL;DR: The data indicate that beta range synchronization represents a state of the cortico-muscular network when attention is directed towards the motor task and the frequency of synchronization of this network is associated with, and possibly encodes, precision in force production.

TL;DR: In this article, a Bayesian inference technique is used to separate single-trial evoked responses from the ongoing background activity, and it is shown that when the average event-related potential (AERP) component remains in the residual time series, in stark contrast to the assumption of the common model that no such phase-locked component should exist.

TL;DR: With the combination of TMS, EEG, and magnetic resonance imaging, an adequate spatiotemporal resolution may be achieved for tracing the intra- and interhemispheric spread of activation in the cortex caused by a magnetic pulse.

TL;DR: Comparison of scalp topographies, functional differences, and different estimated cortical source locations suggest that the N300 and N400 are two distinct semantic effects that reflect aspects of object identification.

TL;DR: Cortical excitability, particularly ICI, measured by PP TMS shows no inter-hemispheric asymmetry and is reproducible within individuals.

TL;DR: The results provide further insight into interindividual differences in the effects of rT MS and suggest the existence of subpopulations with specific patterns of response to rTMS.

TL;DR: The recording of an MMN elicited by illusory McGurk percepts suggests that audiovisual integration mechanisms in speech take place rather early during the perceptual processes.

TL;DR: The effects of 1Hz rTMS on motor cortex excitability are partially dependent on stimulus intensity and the effects of rT MS on motor thresholds and MEP size may differ.

TL;DR: It is hypothesized that the frontal 'mirror neurons' system, known to directly facilitate motor output during observation of actions, may also modulate those somatosensory inputs which are directed to pre-central areas.

TL;DR: The results of the left hemispheric hypotemporality and the increased interhemispheric information transmission in temporal lobe may support the hypothesis that the abnormal laterlization inporal lobe are due to left temporal lobe deficit in schizophrenic patients.