The Role of Awareness in the Error -Processing of Involuntary Eye Movements
Belopolsky, Artem V.
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Permalink
https://hdl.handle.net/2142/82082
Description
Title
The Role of Awareness in the Error -Processing of Involuntary Eye Movements
Author(s)
Belopolsky, Artem V.
Issue Date
2005
Doctoral Committee Chair(s)
Kramer, Arthur F.
Department of Study
Psychology
Discipline
Psychology
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Biology, Neuroscience
Language
eng
Abstract
Previous research has showed that salient events, such as new objects presented with abrupt luminance onset, have a powerful effect on our covert (attentional capture) and overt (oculomotor capture) behavior. Given the ubiquitous nature of eye movements in everyday activities it is important to determine whether oculomotor capture by task-irrelevant events, which is often impervious to conscious awareness, is detected and processed in the same way as erroneous eye movements to the task-relevant events. Concurrent recording of event-related potentials and eye movements were used to investigate the relationship between awareness, error-processing, as manifested by error-related components (ERN, Pe), and oculomotor capture. From the results of two experiments it appears that oculomotor capture is processed similar to other kinds of interruptions of ongoing goal-directed activity, and is registered even in the absence of subjective report. The ERN amplitude was greater when participants were aware of making an error, however, a smaller ERN was also observed even when participants were unaware of an error. The Pe was present only when participants were aware of making an error. The role of awareness in the mechanisms of detection and correction of these often very significant interruptions is discussed.
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