Information processing limitations with aging in the visual scaling of isometric force

The experiment examined if age-related increases in force variability were due to decreases in visual acuity and/or visual-motor information processing deficits. Visual information scale was manipulated over a 250-fold range as young (20–29 years old) and old (60–79 years old) participants produced isometric force output to a visually presented target. Older adults were found to have a very small decrement in visual acuity, but there was no relation between visual acuity and force variability. Force variability exhibited a U-shaped trend as a function of visual information scale. Young adults had less relative variability and higher visual information transfer than the oldest old and these age differences increased with visual information scale. It is concluded that the age-related declines in visual-motor information processing influence changes in neuromuscular function and the emergent differences in force variability at the behavioral level.

[1]  Influence of evaporative forces upon skin temperature dependency of human perspiration. , 1953, Journal of applied physiology.

[2]  P. Fitts.  The information capacity of the human motor system in controlling the amplitude of movement. , 1954, Journal of experimental psychology.

[3]  R A Chase,et al.  Studies on Sensory Feedback: III the Effects of Display Gain on Tracking Performance , 1965, The Quarterly journal of experimental psychology.

[4]  Joachim F. Wohlwill,et al.  The age variable in psychological research. , 1970 .

[5]  C. Rogers,et al.  Feedback precision and postfeedback interval duration. , 1974, Journal of experimental psychology.

[6]  J. Stephens,et al.  The effect of visual feedback on physiological muscle tremor. , 1974, Electroencephalography and clinical neurophysiology.

[7]  K. Newell,et al.  Knowledge of Results and Children's Motor Learning. , 1978 .

[8]  Barbara Sakitt.  Visual-motor efficiency (VME) and the information transmitted in visual-motor tasks , 1980 .

[9]  Janice E. Knoefel,et al.  Clinical neurology of aging , 1985 .

[10]  D. Kenshalo.  Somesthetic sensitivity in young and elderly humans. , 1986, Journal of gerontology.

[11]  J. Rowe,et al.  Human aging: usual and successful. , 1987, Science.

[12]  D. A. Walsh.  Aging and visual information processing: potential implications for everyday seeing. , 1988, Journal of the American Optometric Association.

[13]  J. Cerella.  Aging and Information-Processing Rate , 1990 .

[14]  R. Weale,et al.  The Senescence of Human Vision , 1992 .

[15]  P. D. Spear,et al.  Neural bases of visual deficits during aging , 1993, Vision Research.

[16]  Karl M. Newell,et al.  Variability and Motor Control , 1993 .

[17]  A. Goldberger,et al.  Finite-size effects on long-range correlations: implications for analyzing DNA sequences. , 1993, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics.

[18]  R. Enoka,et al.  Reduced control of motor output in a human hand muscle of elderly subjects during submaximal contractions. , 1993, Journal of neurophysiology.

[19]  J. Cerella,et al.  The rise and fall in information-processing rates over the life span. , 1994, Acta psychologica.

[20]  Karl M. Newell,et al.  Information, coordination modes and control in a prehensile force task , 1994 .

[21]  L Glass,et al.  Effect of manipulating visual feedback parameters on eye and finger movements. , 1995, The International journal of neuroscience.

[22]  Tor Ansved,et al.  Effects of ageing on the motor unit , 1995, Progress in Neurobiology.

[23]  A. Ferrandez,et al.  Changes in sensory motor behavior in aging , 1996 .

[24]  Jeffrey M. Hausdorff,et al.  Altered fractal dynamics of gait: reduced stride-interval correlations with aging and Huntington's disease. , 1997, Journal of applied physiology.

[25]  C. Rice,et al.  Age‐related changes in motor unit function , 1997, Muscle & nerve.

[26]  G. Stelmach,et al.  Persistence in visual feedback control by the elderly , 1998, Experimental Brain Research.

[27]  K. Newell,et al.  Noise, information transmission, and force variability. , 1999, Journal of experimental psychology. Human perception and performance.

[28]  Lynette A. Jones.  Visual and haptic feedback in the control of force , 1999, Experimental Brain Research.

[29]  Annie Schmied,et al.  Selective enhancement of motoneurone short-term synchrony during an attention-demanding task , 2000, Experimental Brain Research.

[30]  K. Newell,et al.  Intermittency in the control of continuous force production. , 2000, Journal of neurophysiology.

[31]  Michael Schrauf,et al.  Dynamic vision based on motion-contrast: changes with age in adults , 2000, Experimental Brain Research.

[32]  R. Enoka,et al.  Steadiness is reduced and motor unit discharge is more variable in old adults , 2000, Muscle & nerve.

[33]  K M Newell,et al.  Variability and Noise in Continuous Force Production , 2000, Journal of motor behavior.

[34]  L G Carlton,et al.  Old adults exhibit greater motor output variability than young adults only during rapid discrete isometric contractions. , 2001, The journals of gerontology. Series A, Biological sciences and medical sciences.

[35]  Les G Carlton,et al.  Modeling Variability of Force During Isometric Contractions of the Quadriceps Femoris , 2002, Journal of motor behavior.

[36]  L. Lipsitz.  Dynamics of stability: the physiologic basis of functional health and frailty. , 2002, The journals of gerontology. Series A, Biological sciences and medical sciences.

[37]  Lorie G Richards,et al.  The effects of age and feedback on isometric knee extensor force control abilities. , 2002, Clinical biomechanics.

[38]  K. Newell,et al.  Time-dependent structure in the discharge rate of human motor units , 2002, Clinical Neurophysiology.

[39]  K. Newell,et al.  Effects of aging on force variability, single motor unit discharge patterns, and the structure of 10, 20, and 40 Hz EMG activity , 2003, Neurobiology of Aging.

[40]  R. Enoka,et al.  Mechanisms that contribute to differences in motor performance between young and old adults. , 2003, Journal of electromyography and kinesiology : official journal of the International Society of Electrophysiological Kinesiology.

[41]  Karl M Newell,et al.  Aging and the time and frequency structure of force output variability. , 2003, Journal of applied physiology.

[42]  A. Schmied,et al.  Proprioceptive control of human wrist extensor motor units during an attention-demanding task , 2004, Brain Research.

[43]  Thomas A. Zeffiro,et al.  The information transmitted at final position in visually triggered forearm movements , 2004, Biological Cybernetics.

[44]  Lars-Göran Nilsson,et al.  New frontiers in cognitive aging , 2004 .

[45]  R. Enoka,et al.  The 1- to 2-Hz oscillations in muscle force are exacerbated by stress, especially in older adults. , 2004, Journal of applied physiology.

[46]  L. Ferrucci,et al.  Untangling the concepts of disability, frailty, and comorbidity: implications for improved targeting and care. , 2004, The journals of gerontology. Series A, Biological sciences and medical sciences.

[47]  K. Newell,et al.  Aging and rhythmical force output: loss of adaptive control of multiple neural oscillators. , 2004, Journal of neurophysiology.

[48]  Stuart W. S. MacDonald,et al.  Intraindividual variability in performance as a theoretical window onto cognitive aging , 2004 .

[49]  C. Moritz,et al.  Discharge rate variability influences the variation in force fluctuations across the working range of a hand muscle. , 2005, Journal of neurophysiology.

[50]  R. Enoka,et al.  Practice reduces motor unit discharge variability in a hand muscle and improves manual dexterity in old adults. , 2005, Journal of applied physiology.

[51]  K. Newell,et al.  Intermittent visual information and the multiple time scales of visual motor control of continuous isometric force production , 2005, Perception & psychophysics.