Analysis of information sources in references of the Wikipedia article "Alpha wave" in English language version.
Alpha waves can be observed spontaneously in normal adults during wakefulness and in relaxed state, especially when there is no mental activity. During the eyes-closed condition, alpha waves are prominent at parietal locations. Attentional processing or cognitive tasks attenuate the alpha waves. Alpha waves are subdivided into lower alpha and upper alpha. It has been observed that alpha activity changes with load during retention of working memory. In addition, individual alpha peak frequency is an indicator of general intelligence factor (also known as g factor).
Alpha waves can be observed spontaneously in normal adults during wakefulness and in relaxed state, especially when there is no mental activity. During the eyes-closed condition, alpha waves are prominent at parietal locations. Attentional processing or cognitive tasks attenuate the alpha waves. Alpha waves are subdivided into lower alpha and upper alpha. It has been observed that alpha activity changes with load during retention of working memory. In addition, individual alpha peak frequency is an indicator of general intelligence factor (also known as g factor).