A COMPARISON OF ACTIGRAPH DATA WITH EEG DEFINED MOVEMENT DURING SLEEP

Authors
  1. Pigeau, R.
Corporate Authors
Defence and Civil Inst of Environmental Medicine, Downsview ONT (CAN)
Abstract
Past research validating actigraph data with EEG emphasized the degree to which both measures scored periods as either awake or asleep. For actigraph data, sleep/waking classifications are inferred from algorithms derived either statistically or heuristically. Therefore, past studies attempting to validate the actigraph (which only measures movement) are confounded with the particular algorithm used to estimate sleep. There have been no studies investigating the relationship between actigraph data, as representing level of activity, with EEG estimates of movement. To determine the correspondence between EEG and actigraph data four subjects were monitored on both measures during a 6 hour sleeping period. For each subject, the amount of movement present in the EEG was correlated with the amount of activity registered using the actigraph. The results indicate there is good correspondance between the two measures and suggests that the actigraph correctly monitors degree of movement.
Report Number
DCIEM-91-59 —
Date of publication
15 Jul 1991
Number of Pages
18
DSTKIM No
91-04332
CANDIS No
71518
Format(s):
Hardcopy;Originator's fiche received by DSIS

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