This paper is only available as a PDF. To read, Please Download here.
In thirty-seven children free of neurological symptoms, we attempted the quantitative analysis of EEG slowing during standarized hyperventilation activation, respiration rate of 30/min, a three-fold elevation of VE and duration of 4 minutes. The degree of build-up gradually became mild with increasing age and no build-up was observed in the subjects older than 14 years old. Fast Fourier Transform analysis of the build-up showed that a big build-up was due to both increasing delta and theta power, and markedly decreasing alpha power with markedly increasing total power, and the mild build-up was due predominantly to increasing theta power. These changes disappeared, the levels before the activation being attained again, within one minute after the hyperventilation in almost all subjects. As to age differences in EEG slowing during hyperventilation, an incerase in both delta and theta activity was observed in the younger subjects (6–9 years old), and a mild increase in theta activity was predominantly observed in adolescents. On topographic analysis of EEG slowing, the delta power was found to have expanded to the posterior area and the theta power to have expanded to become diffuse. The standardization of hyperventilation in childhood is important for judgement of the build up because of these age differences, and also may be useful for understanding the development of the central nervous system.
To read this article in full you will need to make a payment
Purchase one-time access:Academic & Personal: 24 hour online accessCorporate R&D Professionals: 24 hour online access
One-time access price info
- For academic or personal research use, select 'Academic and Personal'
- For corporate R&D use, select 'Corporate R&D Professionals'
Subscribe:Subscribe to Brain and Development
Already a print subscriber? Claim online access
Already an online subscriber? Sign in
Register: Create an account
Institutional Access: Sign in to ScienceDirect
- Electroencephalographic response to overventilation and its relation to age.J Pediatr. 1943; 23: 497-505
- The effects of combined hyperventilation and hypoxia in normal subjects.Electroencephalogr Clin Neurophysiol. 1965; 18: 56-64
- Build up phenomenon in normal adults. Reevaluation on the standardization of hyperventilation (in Japanese).Rinshonoha (Osaka). 1981; 8: 517-523
- Effects of hyperventilation on EEG (in Japanese).Noha to Kindenzu (Tokyo). 1982; 10: 154-161
- A standardization of hyperventilation — Device of “HV monitor” (in Japanese).Rinshonoha (Osaka). 1982; 24: 492-496
- A standard ventilometer for use in routine electroencephalography.Electroencepharogr Gin Neurophysiol. 1949; 1: 552
- Some modern aspects in numerical spectrum analysis of multichannel EEG data.Med Biol Eng Comput. 1967; 3: 319-331
- EEG data acquisition and preprocessing by microcomputer satellite system.Comput Programs Biomed. 1979; 10: 197-208
- Bioelectric brain development. An atlas of EEG power spectra in infants and young children.Neuropadiatrie. 1973; 4: 30-45
- Ontogenic development of the autoregressive brain electrical activity mapping in normal children and adults (in Japanese).Rinshonoha (Osaka). 1983; 25: 575-585
- Developmental study on EEG spectral analysis in mentally retarded children (in Japanese).Rinshonoha (Osaka). 1983; 25: 593-600
Accepted: August 25, 1986
Received: February 17, 1986
© 1987 Published by Elsevier Inc.