title: Stopping eye and hand movements: are the processes independent?
abstract: To explore how eye and hand movements are controlled in a stop task, we introduced effector uncertainty by instructing subjects to initiate and occasionally inhibit eye, hand, or eye + hand movements in response to a color-coded foveal or tone-coded auditory stop signal. Regardless of stop signal modality, stop signal reaction time was shorter for eye movements than for hand movements, but notably did not vary with knowledge about which movement to cancel. Most errors on eye + hand stopping trials were combined eye + hand movements. The probability and latency of signal respond eye and hand movements corresponded to predictions of Logan and Cowan's (1984) race model applied to each effector independently.
authors.affiliation: Vanderbilt University, Nashville, Tennessee 37203, USA.
authors.forename: Leanne
authors.initials: L
authors.lastname: Boucher
authors.forename: Veit
authors.initials: V
authors.lastname: Stuphorn
authors.forename: Gordon D
authors.initials: GD
authors.lastname: Logan
authors.forename: Jeffrey D
authors.initials: JD
authors.lastname: Schall
authors.forename: Thomas J
authors.initials: TJ
authors.lastname: Palmeri
mesh_terms: D005133:Eye Movements; D006225:Hand / Q000502:physiology*; D006801:Humans; D009068:Movement / Q000502:physiology*; D011930:Reaction Time