TY - JOUR
T1 - Structured perceptual arrays and the modulation of Fitts's law
T2 - Examining saccadic eye movements
AU - Al-Aidroos, Naseern
AU - Fischer, Martin H.
AU - Adam, Jos J.
AU - Pratt, Jay
PY - 2008/3
Y1 - 2008/3
N2 - On the basis of recent observations of a modulation of Fitts's law for manual pointing movements in structured visual arrays (J.J. Adam, R. Mol, J.Pratt, & M. H. Fischer, 2006; J. Pratt, J. J. Adam, & M. H. Fischer, 2007), the authors examined whether a similar modulation occurs for saccadic eye movements. Healthy participants (N = 19) made horizontal saccades to targets that appeared randomly in I of 4 positions, either on an empty background or within I of 4 placeholder boxes. Whereas in previous studies, placeholders caused a decrease in movement time (MT) without the normal decrease in movement accuracy predicted by Fitts's law, placeholders in the present experiment increased saccadic accuracy (decreased endpoint variability) without an increase in MT. The present results extend the findings of J. J. Adam et a]. of a modulation of Fitts's law from the temporal domain to the spatial domain and from manual movements to eye movements.
AB - On the basis of recent observations of a modulation of Fitts's law for manual pointing movements in structured visual arrays (J.J. Adam, R. Mol, J.Pratt, & M. H. Fischer, 2006; J. Pratt, J. J. Adam, & M. H. Fischer, 2007), the authors examined whether a similar modulation occurs for saccadic eye movements. Healthy participants (N = 19) made horizontal saccades to targets that appeared randomly in I of 4 positions, either on an empty background or within I of 4 placeholder boxes. Whereas in previous studies, placeholders caused a decrease in movement time (MT) without the normal decrease in movement accuracy predicted by Fitts's law, placeholders in the present experiment increased saccadic accuracy (decreased endpoint variability) without an increase in MT. The present results extend the findings of J. J. Adam et a]. of a modulation of Fitts's law from the temporal domain to the spatial domain and from manual movements to eye movements.
U2 - 10.3200/JMBR.40.2.155-164
DO - 10.3200/JMBR.40.2.155-164
M3 - Article
C2 - 18400681
SN - 0022-2895
VL - 40
SP - 155
EP - 164
JO - Journal of Motor Behavior
JF - Journal of Motor Behavior
IS - 2
ER -