Control of visually guided braking using constant- $$\tau$$ and proportional rate
Tóm tắt
This study investigated the optical information and control strategies used in visually guided braking. In such tasks, drivers exhibit two different braking behaviors: impulsive braking and continuously regulated braking. We designed two experiments involving a simulated braking task to investigate these two behaviors. Participants viewed computer displays simulating an approach along a linear path over a textured ground surface toward a set of road signs. The task was to use a joystick as a brake to stop as close as possible to the road signs. Our results showed that participants relied on a weak constant-
$$\tau$$
strategy (Bingham 1995) when regulating the brake impulsively. They used discrete
$$\tau$$
values as critical values and they regulated the brake so as not to let
$$\tau$$
fall below these values. Our results also showed that proportional rate control (Anderson and Bingham 2010, 2011) is used in continuously regulated braking. Participants initiated braking at a certain proportional rate value and controlled braking so as to maintain that value constant during the approach. Proportional rate control is robust because the value can fluctuate within a range to yield good performance. We argue that proportional rate control unifies the information-based approach and affordance-based approach to visually guided braking.
Tài liệu tham khảo
Anderson J, Bingham GP (2010) A solution to the online guidance problem for targeted reaches: proportional rate control using relative disparity τ. Exp Brain Res 205:291–306
Anderson J, Bingham GP (2011) Locomoting-to-reach: information variables and control strategies for nested actions. Exp Brain Res 214(4):631–644
Bingham GP (1995) The role of perception in timing: Feedback control in motor programming and task dynamics. In: Covey E, Hawkins H, McMullen T, Port R (eds) Neural representation of temporal patterns. Plenum Press, New York, pp 129–157
Cavallo V, Laurent M (1988) Visual information and skill level in time-to-collision estimation. Perception 17:623–632
Dixon PM, Saint-Maurice PF, Kim Y, Hibbing P, Bai Y, Welk GJ (2018) A primer on the use of equivalence testing for evaluating measurement agreement. Med Sci Sports Exerc 50(4):837
Fajen BR (2005a) Calibration, information, and control strategies for braking to avoid a collision. J Exp Psychol Hum Percept Perform 31(3):480–501
Fajen BR (2005b) Perceiving possibilities for action: On the necessity of calibration and perceptual learning for the visual guidance of action. Perception 34(6):741–755
Fajen BR (2005c) The scaling of information to action in visually guided braking. J Exp Psychol Hum Percept Perform 31(5):1107–1123
Fajen BR (2007) Affordance-based control of visually guided action. Ecol Psychol 19(4):383–410
Fath A, Marks B, Bingham GP (2013) Response to perturbation in constant tau-dot versus constant proportional rate models of visually guided braking. Journal of Vision 3:747. https://doi.org/10.1167/13.9.747
Fath A, Marks B, Snapp-Childs W, Bingham GP (2014) Information and control strategy to solve the degrees of freedom problem for nested locomotion-to-reach. Exp Brain Res 232:3821–3831. https://doi.org/10.1007/s00221-014-4072-0
Gibson JJ (1979/1986) The ecological approach to visual perception. Boston, MA: Houghton Mifflin.
Harrison HS, Turvey MT, Frank TD (2016) Affordance-based perception-action dynamics: a model of visually guided braking. Psychol Rev 123:305–323
Kadihasanoglu D, Beer RD, Bingham GP (2015) Evolutionary robotics techniques used to model information and control of visually-guided braking. Adaptive Behavior 23(3):125–142
Kim NG, Turvey MT, Carello C (1993) Optical information about the severity of upcoming contacts. J Exp Psychol Hum Percept Perform 19:179–193
Larish JF, Flach JM (1990) Sources of information useful for perception of speed of rectilinear self-motion. J Exp Psychol Hum Percept Perform 16:295–302
Lee DN (1976) A theory of visual control of braking based on information about time-to-collision. Perception 5:437–459
Regan D, Hamstra SJ (1993) Dissociation of discrimination thresholds for time to contact and for rate of angular expansion. Vision Res 33(4):447–462
Todd JT (1981) Visual information about moving objects. J Exp Psychol Hum Percept Perform 7:795–810
Walker E, Nowacki AS (2011) Understanding equivalence and noninferiority testing. J Gen Intern Med 26(2):192–196
Yilmaz EH, Warren WH Jr (1995) Visual control of braking: A test of the τ hypothesis. J Exp Psychol Hum Percept Perform 21:996–1014