ERIC Number: ED234374
Record Type: RIE
Publication Date: 1983-Sep
Reference Count: 0
What is the Basis for Making an Eye Movement during Reading? Technical Report No. 287.
McConkie, George W.; And Others
At some time during every fixation a decision is made to move the eyes, directing them to a new location in the stimulus array. To understand the eye movement control processes, three general hypotheses concerning the cognitive basis for deciding to move the eyes were investigated: the saccade (movement) initiation time is determined only on the basis of information obtained prior to the current fixation; the saccade initiation occurs only after all processing of the presently viewed information has been completed; and the saccade initiation occurs when some processing event takes place before the processing of current information is completed. A review of current research indicates that (1) the time of initiating a saccade can be influenced by visual information acquired on the fixation which terminates in that saccade; (2) processing of the information is not necessarily completed by the time of the decision to move the eyes; (3) with fixations too short to process information, the next saccade must be based entirely on prior information; and (4) part of the variability in the saccade onset time may be associated with the amount of processing time elapsing before the information is utilized. (MM)
Publication Type: Information Analyses
Education Level: N/A
Sponsor: National Inst. of Mental Health (DHHS), Rockville, MD.; National Inst. of Education (ED), Washington, DC.
Authoring Institution: Illinois Univ., Urbana. Center for the Study of Reading.; Bolt, Beranek and Newman, Inc., Cambridge, MA.
Identifiers: Saccadic Eye Movements
Note: Will appear in "The Proceedings of the Second European Conference on Eye Movements," A.G. Gale and C.W. Johnson, Editors.