Autoregressive analysis of flash evoked potentials in healthy preterm infants during sleep.
- Author:
Xiao-Long CHEN
1
;
Xiao-Li PAN
;
Shu-Ying MENG
Author Information
1. Department of Ophthalmology, Second Hospital, China Medical University, Shenyang, China. chenxlp@mail.sy.ln.cn
- Publication Type:Journal Article
- MeSH:
Evoked Potentials, Visual;
physiology;
Female;
Humans;
Infant, Newborn;
Infant, Premature;
physiology;
Male;
Reaction Time;
Sleep;
physiology
- From:
Acta Physiologica Sinica
2002;54(5):446-450
- CountryChina
- Language:Chinese
-
Abstract:
To interpret the flash evoked potential (FVEP) as dynamic high-order responses to natural and experimental stimulation in healthy preterm infants, waveform analysis of FVEP in 36 healthy preterm infants (postconceptional age 28~42 weeks) were performed using an autoregressive analysis. Based on the histogram of damping frequency of different component impulse response waveforms, the waveforms were divided into 4 groups: group I (0 ~ <2 Hz), group II (2 ~ <6.5 Hz), group III (6.5 ~ <12.0 Hz) and group IV (12~25 Hz). The total power, power of component impulse responses (group I~IV), and damping time (group II~IV) changed significantly with increasing postconceptional age (P<0.01 or P<0.05). Identification of an impulse response component with dominant frequency which undergoes a well-identified change with age is considered to be a useful tool for discriminating between normal and abnormal changes in the FVEP with age in healthy preterm infants.
