Accession Number : AD0672983

Title :   CROSS-CORRELATION OF HUMAN ALPHA ACTIVITY: NORMATIVE DATA,

Corporate Author : SCHOOL OF AEROSPACE MEDICINE BROOKS AFB TEX

Personal Author(s) : Liske,E. ; Hughes,Harry M. ; Stowe,Darwell E.

Report Date : 1968

Pagination or Media Count : 24

Abstract : Forty-two asymptomatic adult males were studied by history, physical examination and EEG. Cross-correlograms were generated from the EEG data derived from P3-O1 and P4-O2. Twenty-four subjects exhibited phase lead to the right and 18 to the left. None were exactly in zero phase. Average phase shift for the group was 0.83 msec to the right. The range of the phase shifts was from 4 msec left to 7 msec right. This report emphasizes that not all normal subjects are essentially synchronized with respect to their alpha activity, although in most normals there is clearly some imperfect neurological mechanism operating to phase align the alpha activity. In a number of normal subjects a surprising degree of right-sided alpha phase leading was seen; a degree not approached in those subjects in which left-sided alpha activity was phase leading. These findings tend to support text book statements that cerebral dominance for alpha more often resides in the right hemisphere of normal humans. (Author)

Descriptors :   (*ELECTROENCEPHALOGRAPHY, CORRELATION TECHNIQUES), BRAIN, ELECTROPHYSIOLOGY, HUMANS, STATISTICAL ANALYSIS

Subject Categories : Anatomy and Physiology

Distribution Statement : APPROVED FOR PUBLIC RELEASE