| Summary: | 碩士 === 臺北巿立體育學院 === 運動科學研究所 === 92 === Past research has shown that maturation changes in the EEG. Matousek and Petersen (1973) conducted the first major of age-related EEG changes. The results indicated that δ and θ activity were dominant until the age of 4 years, with both decreasing with age. α and β activity increased throughout childhood. Matthis, et al. (1980) found, with increasing age, that slow wave activity appeared to be replaced by faster frequencies. As such, change in EEG frequency can be used to present the neural maturation. Among factors that might exert influence on brain function, physical activity has been found to affect several cognitive and emotional function of adult. In addition, Shih (2003) found that δ activity was significantly negatively correlated with movement ability (r = -.693) in preschooler children. With the inconsistent findings on sex differences in the normal maturation of the EEG, the current study intended to examine whether any interaction effect existed between sex differences and the performance of movement skills on EEG activity in preschoolers.
Twenty-eight boys and thirty-eight girls, between the aged of 53 and 75 months, participated in this study. Each of them was assessed by the Movement Skills Assessment (Kovar, et al., 2003) to determine their movement ability. The EEG was recorded during an eyes-closed resting condition at six electrode cites (i.e., F3, F4, Cz, Pz, O1, O2). The cleaned EEG was fast Fourier transformed to provide estimates for absolute power in the six frequency bands (i.e., δ, 0.5-3.5Hz; θ, 4-7Hz; α-1, 7.5-9Hz; α-2, 9.5-12.5Hz). A sex vs. movement ability Multivariate Tests was employed on each of six electrodes for four frequency bands.
The statistical result revealed that change in α-2 power could be used to present the performance of movement skills in boys at 6 electrode sites. And graphically, also found that all of the girls’ patterns in α-1 and θ power showed the tendency of which the worse movement skills, the higher power.
|
|---|
