The information capacity of the human motor system in controlling the amplitude of movement.

Abstract

assisted in collecting the data here reported. ' Theorem 17 states that "the capacity of a channel of band W perturbed by white thermal noise of power N when the average transmitter poser is limited to P is given by P+N" C-W log-^-(22, p. 67). W is in cycles per second and takes the form of the reciprocal of some value of time. The power of a band of noise is equivalent to the variance of its amplitude distribution around its mean value.

Mental Practice for Relearning Locomotor Skills

“…3,8 -12 Moreover, when people walk or imagine themselves walking on narrow beams, 12 through gates 11 or along paths of different widths, 3 uphill or downhill, 9 and at different speeds, 9 both the actual and imagined walking times increase as a function of the difficulty of the task. The latter findings thus indicate that Fitts' law, 13 which states that more-difficult movements take more time to produce physically than easier movements, also applies to motor imagery of walking.…”

In touch with numbers: Embodied and situated effects in number magnitude comparison

“…Pointing movements were completed faster in response to UD compatible than incompatible number pairs again indicating an association of place-value and motor processing. As MT is generally found to be correlated positively with movement amplitude and negatively with target width (Fitts, 1992;Rosenbaum, 1980;Soukoreff & MacKenzie, 2004), it is worth emphasising that the usage of relatively small target areas in the present study ensured that movement amplitudes and reaching demands of the executed pointing responses were identical across UD compatible and incompatible trials. This assures that the prolonged average MT in incompatible trials does not simply reflect the obvious physical fact that it takes more time to cover larger distances.…”

Very prolonged practice in block of trials: Scaling of fitness, universality and persistence

“…Scientists have done many experiments throughout the years in order to investigate the learning process; the focus has been tasks on blocks with short time of execution divided into short blocks, punctuated with rest breaks. A non-extensive but representative list of examples is pressing buttons, ski-simulator [8,9], tracing geometric figures in a mirror [10], 1023 choice reaction time task [11], alphabet arithmetic task in the study of learning curve [12], memory search task in study of age-related learning differences [13], easy 4 choice reaction time task in the investigation of very prolonged practice [14], movement of a finger or pointer from one place to another in the study of Fitts' Law [15], human stick balancing [16], speed stack bimanually with pyramid of cups in the study of motor learning in children with unilateral cerebral palsy [17], and reading text in the study of text reading fluency in adult readers [18].…”