PMID- 9442436
OWN - NLM
STAT- MEDLINE
DCOM- 19980304
LR  - 20190921
IS  - 0148-5598 (Print)
IS  - 0148-5598 (Linking)
VI  - 21
IP  - 4
DP  - 1997 Aug
TI  - Phase information in visual evoked potentials.
PG  - 219-27
AB  - The Visual Evoked Potential (VEP) is an electrophysiological commonly used test 
      in investigating various neurophysiological disorders. Through the years many 
      methods have been developed, but there are not many objective criteria in 
      distinguishing a normal VEP waveform from an abnormal. In this communication we 
      use the phase characteristics of the power spectrum as a criterion of 
      distinguishing normals and abnormals. From our analysis, it was shown that the 
      phase spectrum of a VEP has a certain periodicity in the 0- to 40-Hz region. By 
      studying these periodicities we were able to determine the range of the period 
      that characterizes normal and abnormal populations and to establish an 
      experimental method for objectively examining any kind of VEP waveforms.
FAU - Micheli-Tzanakou, E
AU  - Micheli-Tzanakou E
AD  - Rutgers University, Department of Biomedical Engineering, Piscataway, New Jersey 
      08855-0909, USA.
FAU - Pavlopoulos, S
AU  - Pavlopoulos S
LA  - eng
PT  - Journal Article
PT  - Research Support, U.S. Gov't, P.H.S.
PL  - United States
TA  - J Med Syst
JT  - Journal of medical systems
JID - 7806056
SB  - IM
MH  - Alzheimer Disease/physiopathology
MH  - Artifacts
MH  - Electrophysiology
MH  - Evoked Potentials, Visual/*physiology
MH  - Fourier Analysis
MH  - Humans
MH  - Neurophysiology
MH  - Observer Variation
MH  - Periodicity
MH  - Photic Stimulation
MH  - Sensitivity and Specificity
MH  - *Signal Processing, Computer-Assisted
MH  - Single-Blind Method
EDAT- 1997/08/01 00:00
MHDA- 1998/01/27 00:01
CRDT- 1997/08/01 00:00
PHST- 1997/08/01 00:00 [pubmed]
PHST- 1998/01/27 00:01 [medline]
PHST- 1997/08/01 00:00 [entrez]
AID - 10.1023/a:1022832520612 [doi]
PST - ppublish
SO  - J Med Syst. 1997 Aug;21(4):219-27. doi: 10.1023/a:1022832520612.