Speed/accuracy trade-offs in target-directed movements

Behavioral and Brain Sciences

Volumn 20, Issue 2, 1997, Pages 279-349

  Plamondon, Réjean ^a   Alimi, Adel M ^a  

^a ÉCOLE POLYTECHNIQUE DE MONTRÉAL   (Canada)

Author keywords

Central limit theorem; Delta lognormal law; Fitts' law; Neuromascular synergy; Power law; Quadratic law; Speed accuracy trade offs; Velocity profile

Indexed keywords

ACCURACY; HUMAN; KINESIOLOGY; LINEAR SYSTEM; MATHEMATICAL ANALYSIS; MOVEMENT (PHYSIOLOGY); REVIEW; THEORY; VELOCITY;

FEMALE; GOALS; HUMANS; MALE; MODELS, BIOLOGICAL; MOVEMENT; MUSCLE, SKELETAL; NEURONS; STOCHASTIC PROCESSES; TIME FACTORS;

EID: 0031468575     PISSN: 0140525X     EISSN: None     Source Type: Journal    
DOI: 10.1017/S0140525X97001441     Document Type: Review

References (10)

1. It should be noted that if V = 0, we obtain an expression of MT for the case of static targets, which is still different from Fitts' formulation.
2. It should he noted that if D = 0, we obtain an expression of MT for the no-delay case, which is similar to Fitts' formulation.
3. 1/2) of a lognormal on a conventional time scale (Plamondon 1995a).
4. 0, we will not distinguish between activation time and movement time, to avoid confusion.
5. 1 = ∞. See Plamondon (1993b; 1995a) for a discussion about this asymptotic prediction.
6. 2), control from both input command and system processes might have to be taken into account in some extreme cases.
7. 2 D/ΔD; Kerr (1973, p. 177), included the trials that missed the target in the calculation of MT; Kvalseth (1977, p. 43), for the same reason as Kerr (1973); Spitz (1990, p. 407), included in the measure of MT the time to stabilize the cursor on the target.
8. e (Howarth et al. 1971).
9. We always assume here that the recording devices or the manipulanda used by the subjects have a negligible effect on the neuromuscular impulse response. If these mechanical devices strongly interfere with the end-effector under study, the ΔΛ velocity profile might be partially masked by the impulse response of the recording devices itself, making data analysis really more complex.
10. For subject 7, the value 000.3 (probably a typing error) in Table I was replaced by 600.3, which is consistent with the mean value reported (Kerr & Langolf 1977). ACKNOWLEDGMENTS This work was supported partially by grants NSERC-000915 and ICR046114 from NSERC Canada, grant ER1220 from FCAR Québec, and a grant from the Office Franco-Québécois to Réjean Plamondon. Adel M. Alimi has benefited from a scholarship from ACDI. The authors wish to thank Mrs. Hélène Dallaire for her invaluable assistance in typing and editing the various versions of this manuscript. Part of this work was written while the first author was a visiting scientist at the Laboratoire de Neurosciences Cognitives, Centre National de la Recherche Scientifique, Marseilles, France.