Frequency shift in topography of spontaneous brain rhythms from childhood to adulthood

• Published in: Cognitive neurodynamics Vol. 11; no. 1; pp. 23 - 33
• Main Authors: Rodríguez-Martínez, E. I., Ruiz-Martínez, F. J., Barriga Paulino, C. I., Gómez, Carlos M.
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer Netherlands 01.02.2017; Springer Nature B.V
• Subjects: Age; Artificial Intelligence; Biochemistry; Biomedical and Life Sciences; Biomedicine; Brain; Brain architecture; Child development; Children; Cognitive Psychology; Computer Science; EEG; Electrodes; Fast Fourier transformations; Frequency ranges; Frequency shift; Human subjects; Hypotheses; Neurosciences; Research Article; Rhythm; Theta rhythms; Young adults; Development; Children; Frequency shifting; Spectral power; Topography; Individual alpha peak frequency
• ISSN: 1871-4080; 1871-4099
• DOI: 10.1007/s11571-016-9402-4

It has been described that the frequency ranges at which theta, mu and alpha rhythms oscillate is increasing with age. The present report, by analyzing the spontaneous EEG, tries to demonstrate whether there is an increase with age in the frequency at which the cortical structures oscillate. A topographical approach was followed. The spontaneous EEG of one hundredand seventy subjects was recorded. The spectral power (from 0.5 to 45.5 Hz) was obtained by means of the Fast Fourier Transform. Correlations of spatial topographies among the different age groups showed that older groups presented the same topographical maps as younger groups, but oscillating at higher frequencies. The results suggest that the same brain areas oscillate at lower frequencies in children than in older groups, for a broad frequency range. This shift to a higher frequency with age would be a trend in spontaneous brain rhythm development.