Browse Publications Technical Papers 2005-01-0439

Effects of Hands-free Phone Conversation on Visual Behavior: Dissociation of Binocular Gaze Point as an Index of Inattention 2005-01-0439

Effects of hands-free phone conversations on drivers' visual behavior and detection performance were examined using a gaze-tracking device and fixed-based driving simulator. The participants engaged in various conversation tasks (simple/arithmetic/unconstrained) while following a lead vehicle. The results indicated that hands-free-phone conversations, even if the contents are not subjectively demanding, can affect a driver's visual behavior. The increment of binocular gaze dissociation induced by conversing on a phone indicates that a driver's attention is diverted from the external scenery to the conversation. Furthermore, this observed dissociation of binocular gaze may represent a resting position, which is revealed only when binocular fusion is disrupted by occluding one eye.


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