Abstract
The present study quantifies the amplitude and phase variability of steady-state VEPs (S-VEPs) and compares this variability between subjects and between individual runs. The S-VEPs were recorded repeatedly in 14 normal subjects with varying spatial and temporal frequencies of sinusoidal gratings; 6 spatial frequencies (range 0.5-8.0 c/deg) with 3 temporal frequencies (4, 6 and 8 Hz) were used. A total of 75 responses were averaged and analyzed by the Fourier method. Four recordings were obtained in each spatio-temporal combination. In general, the phase data showed small inter- and intrasubject variability. As anticipated, the amplitude data showed a large degree of intersubject variability, although the intrasubject variability was very small. In addition, in some stimulus conditions the inter- and intrasubject variability increased, which thus suggested the existence of an optimal spatio-temporal combination. Therefore, these stimulus parameters should be taken into consideration when S-VEPs are applied in clinical practice.
| Original language | English |
|---|---|
| Pages (from-to) | 171-176 |
| Number of pages | 6 |
| Journal | Electroencephalography and Clinical Neurophysiology - Evoked Potentials |
| Volume | 100 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - Jan 1 1996 |
All Science Journal Classification (ASJC) codes
- Neuroscience(all)
- Clinical Neurology
Cite this
Normal variability of the amplitude and phase of steady-state VEPs. / Tobimatsu, Shozo; Tomoda, Hiroyuki; Kato, Motohiro.
In: Electroencephalography and Clinical Neurophysiology - Evoked Potentials, Vol. 100, No. 3, 01.01.1996, p. 171-176.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Normal variability of the amplitude and phase of steady-state VEPs
AU - Tobimatsu, Shozo
AU - Tomoda, Hiroyuki
AU - Kato, Motohiro
PY - 1996/1/1
Y1 - 1996/1/1
N2 - The present study quantifies the amplitude and phase variability of steady-state VEPs (S-VEPs) and compares this variability between subjects and between individual runs. The S-VEPs were recorded repeatedly in 14 normal subjects with varying spatial and temporal frequencies of sinusoidal gratings; 6 spatial frequencies (range 0.5-8.0 c/deg) with 3 temporal frequencies (4, 6 and 8 Hz) were used. A total of 75 responses were averaged and analyzed by the Fourier method. Four recordings were obtained in each spatio-temporal combination. In general, the phase data showed small inter- and intrasubject variability. As anticipated, the amplitude data showed a large degree of intersubject variability, although the intrasubject variability was very small. In addition, in some stimulus conditions the inter- and intrasubject variability increased, which thus suggested the existence of an optimal spatio-temporal combination. Therefore, these stimulus parameters should be taken into consideration when S-VEPs are applied in clinical practice.
AB - The present study quantifies the amplitude and phase variability of steady-state VEPs (S-VEPs) and compares this variability between subjects and between individual runs. The S-VEPs were recorded repeatedly in 14 normal subjects with varying spatial and temporal frequencies of sinusoidal gratings; 6 spatial frequencies (range 0.5-8.0 c/deg) with 3 temporal frequencies (4, 6 and 8 Hz) were used. A total of 75 responses were averaged and analyzed by the Fourier method. Four recordings were obtained in each spatio-temporal combination. In general, the phase data showed small inter- and intrasubject variability. As anticipated, the amplitude data showed a large degree of intersubject variability, although the intrasubject variability was very small. In addition, in some stimulus conditions the inter- and intrasubject variability increased, which thus suggested the existence of an optimal spatio-temporal combination. Therefore, these stimulus parameters should be taken into consideration when S-VEPs are applied in clinical practice.
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U2 - 10.1016/0168-5597(95)00279-0
DO - 10.1016/0168-5597(95)00279-0
M3 - Article
C2 - 8681857
AN - SCOPUS:0029890450
VL - 100
SP - 171
EP - 176
JO - Electroencephalography and Clinical Neurophysiology - Evoked Potentials
JF - Electroencephalography and Clinical Neurophysiology - Evoked Potentials
SN - 0168-5597
IS - 3
ER -