TY - JOUR
T1 - Interpersonal Fitts' law
T2 - When two perform as one
AU - Fine, Justin
AU - Amazeen, Eric
PY - 2011/6
Y1 - 2011/6
N2 - Intra- and interpersonal coordination was investigated using a bimanual Fitts' law task. Participants tapped rhythmically between pairs of targets. Tapping was performed with one hand (unimanual), two hands (intrapersonal coordination), and one hand together with another participant (interpersonal coordination). The sizes and distances of targets in a pair were manipulated independently for each hand. When target difficulty was unequal across hands, movement times were similar in the coordination conditions, in violation of Fitts' law. Processing speed (measured by index of performance) increased for more difficult tasks, suggesting increased attention, even for dyads. These findings suggest that similar processes, not captured by centralized control, guide coordination for both individuals and dyads. Measures of coordination, though, still showed stronger coordination tendencies for intrapersonal coordination, indicating a possible role for centralized mechanisms.
AB - Intra- and interpersonal coordination was investigated using a bimanual Fitts' law task. Participants tapped rhythmically between pairs of targets. Tapping was performed with one hand (unimanual), two hands (intrapersonal coordination), and one hand together with another participant (interpersonal coordination). The sizes and distances of targets in a pair were manipulated independently for each hand. When target difficulty was unequal across hands, movement times were similar in the coordination conditions, in violation of Fitts' law. Processing speed (measured by index of performance) increased for more difficult tasks, suggesting increased attention, even for dyads. These findings suggest that similar processes, not captured by centralized control, guide coordination for both individuals and dyads. Measures of coordination, though, still showed stronger coordination tendencies for intrapersonal coordination, indicating a possible role for centralized mechanisms.
KW - Coordination
KW - Fitts' law
KW - Joint-action
KW - Motor control
UR - http://www.scopus.com/inward/record.url?scp=79958232372&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79958232372&partnerID=8YFLogxK
U2 - 10.1007/s00221-011-2707-y
DO - 10.1007/s00221-011-2707-y
M3 - Article
C2 - 21547558
AN - SCOPUS:79958232372
SN - 0014-4819
VL - 211
SP - 459
EP - 469
JO - Experimental Brain Research
JF - Experimental Brain Research
IS - 3-4
ER -