the degree of temporal coupling and the nature of temporal ordering between the gaze ( eye-head ) and arm motor systems was studied in normal subjects by measuring the reaction time , rt , of each system to randomly generated visual signals presented along the horizontal meridian : ( 1 ) at two spatial locations , 15.5 degrees and 29.1 degrees , ( 2 ) to the right and left of a central fixation point , and ( 3 ) with and without room illumination .
C0015392
eye
C0018670
head