scholarly journals A Spatiotemporal Framework for MEG/EEG Evoked Response Amplitude and Latency Variability Estimation

2010 ◽  
Vol 57 (3) ◽  
pp. 616-625 ◽  
Author(s):  
T. Limpiti ◽  
B.D. Van Veen ◽  
R.T. Wakai
Keyword(s):  
Response Amplitude ◽  
Evoked Response ◽  
Latency Variability

Averaged evoked response in patients with psychogenic pain

1974 ◽  
Vol 4 (1) ◽  
pp. 19-27 ◽  
Author(s):  
Joan Mushin ◽  
Raymond Levy
Keyword(s):  
Stimulus Intensity ◽  
Response Amplitude ◽  
Evoked Response ◽  
The Other ◽  
Evoked Responses ◽  
Control Groups ◽  
Psychogenic Pain ◽  
Separate Control ◽  
The Relationship ◽  
The Way

SYNOPSISCortical somatosensory evoked responses to stimuli of various intensities were recorded in a group of patients with a diagnosis of ‘psychogenic pain’ and in three separate control groups. Differences emerged in the relationship between stimulus intensity and response amplitude. It is suggested that patients with psychogenic pain tended to deal with small stimuli in the way in which the other groups of patients dealt with large stimuli.

scholarly journals Differential effects of temporal regularity on auditory-evoked response amplitude: a decrease in silence and increase in noise

2013 ◽  
Vol 9 (1) ◽  
pp. 44 ◽  
Author(s):  
Hidehiko Okamoto ◽  
Henning Teismann ◽  
Sumru Keceli ◽  
Christo Pantev ◽  
Ryusuke Kakigi
Keyword(s):  
Response Amplitude ◽  
Evoked Response ◽  
Differential Effects ◽  
Temporal Regularity ◽  
Auditory Evoked Response

Effects of Signal Rise Time and Frequency on the Brainstem Auditory Evoked Response

1978 ◽  
Vol 21 (2) ◽  
pp. 408-416 ◽  
Author(s):  
John Cobb ◽  
Paul Skinner ◽  
John Burns
Keyword(s):  
Response Latency ◽  
Rise Time ◽  
Response Amplitude ◽  
Evoked Response ◽  
Center Frequency ◽  
Frequency Effect ◽  
Sensation Level ◽  
Auditory Evoked Response ◽  
Brainstem Auditory Evoked Response

Two experiments studied the effects of signal rise time and frequency on the brainstem auditory evoked response. In Experiment 1, five different rise times were presented, fast (10 µsec), 0.5, 1, 2.5, and 5 msec at a center frequency of 1000 Hz at three sensation levels, 20, 40, and 60 dB. As rise time was increased, response amplitude and detectability decreased and response latency increased. In Experiment 2, tonal pips were presented at 250, 500, 1000, 2000, 4000, and 8000 Hz at 40-dB sensation level. Although the effects of frequency and signal rise time were confounded, no frequency effect was apparent.

Combined Effects of Recovery Period and Stimulus Intensity on the Human Auditory Evoked Vertex Response

1973 ◽  
Vol 16 (2) ◽  
pp. 297-308 ◽  
Author(s):  
David A. Nelson ◽  
Frank M. Lassman
Keyword(s):  
Power Function ◽  
Stimulus Intensity ◽  
Recovery Period ◽  
Normal Hearing ◽  
Response Amplitude ◽  
Evoked Response ◽  
Dual Function ◽  
Combined Effects ◽  
Logarithmic Function ◽  
Recovery Function

Averaged auditory evoked vertex responses were obtained from eight normal-hearing subjects in response to 32 monaural 1000-Hz tone bursts at 30 combinations of recovery period and stimulus intensity. From curves describing N 1 -P 2 peak-to-peak amplitudes, an equation was derived that describes the combined effects of recovery period and stimulus intensity on evoked response amplitude. The results show evoked response amplitude to be a dual function of both recovery period and stimulus intensity. At a given stimulus intensity, evoked response amplitude increases as a logarithmic function of recovery period. At a given recovery period, evoked response amplitude increases as a power function of stimulus intensity. The combined effects of recovery period and stimulus intensity produce equal ratio changes in the slope of the recovery function with equal ratio changes in stimulus intensity.

Visual Evoked-Response Correlates of Speechreading Performance in Normal-Hearing Adults

1983 ◽  
Vol 26 (1) ◽  
pp. 2-9 ◽  
Author(s):  
Vincent J. Samar ◽  
Donald G. Sims
Keyword(s):  
Multiple Correlation Coefficient ◽  
Evoked Response ◽  
Multiple Correlation ◽  
Potential Significance ◽  
Visual Evoked Response ◽  
Latency Measure ◽  
Two Measures ◽  
Components Analysis ◽  
The Relationship ◽  
Visual Evoked

The relationship between the latency of the negative peak occurring at approximately 130 msec in the visual evoked-response (VER) and speechreading scores was investigated. A significant product-moment correlation of -.58 was obtained between the two measures, which confirmed the fundamental effect but was significantly weaker than that previously reported in the literature (-.90). Principal components analysis of the visual evoked-response waveforms revealed a previously undiscovered early VER component, statistically independent of the latency measure, which in combination with two other components predicted speechreading with a multiple correlation coefficient of S4. The potential significance of this new component for the study of individual differences in speechreading ability is discussed.

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