Beta activity and older age.
D000367:Age Factors; D000368:Aged; D001932:Brain Neoplasms / Q000503:physiopathology*; D002561:Cerebrovascular Disorders / Q000503:physiopathology*; D006259:Craniocerebral Trauma / Q000503:physiopathology*; D004594:Electrophysiology; D007839:Functional Laterality; D006801:Humans; D001523:Mental Disorders / Q000503:physiopathology*; D008875:Middle Aged