Saccade-Stepping Interactions Revise the Motor Plan for Obstacle Avoidance

References

• Ballard , D. H. , Hayhoe , M. M. and Pelz , J. B. 1995 . Memory representations in natural tasks . Journal of Cognitive Neuroscience , 7 : 66 – 80 .
   PubMed Web of Science ®Google Scholar
• Bracke-Tolkmitt , R. , Linden , A. , Canavan , G. M. , Rockstroh , B. , Scholz , E. Wessell , K. 1989 . The cerebellum contributes to mental skills . Behavioral Neuroscience , 103 : 442 – 446 .
   Web of Science ®Google Scholar
• Chen , H. C. , Schultz , A. B. , Ashton-Miller , J. A. , Giordani , B. , Alexander , N. B. and Guire , K. E. 1996 . Stepping over obstacles: Dividing attention impairs performance of old more than young adults . Journal of Gerontology: Medical Science , 51A : M116 – M122 .
   Google Scholar
• Courchesne , E. , Townsend , J. , Akshoomoff , N. A. , Saitoh , O. , Yeung-Courchesne , R. Lincoln , A. J. 1994 . Impairment in shifting attention in autistic and cerebellar patients . Behavioral Neuroscience , 108 : 848 – 865 .
   PubMed Web of Science ®Google Scholar
• Di Fabio , R. P. , Paul , S. , Emasithi , A. and Greany , J. F. 2001 . Evaluating eye-body coordination during unrestrained functional activity in older persons . Journal of Gerontology: Medical Science , 56A : M571 – M574 .
   Google Scholar
• Di Fabio , R. P. , Zampieri , C. and Greany , J. F. 2003 . Aging and saccade-stepping interactions in humans . Neuroscience Letters , 339 : 179 – 182 .
   PubMed Web of Science ®Google Scholar
• Ellis , R. S. 1919 . A preliminary quantitative study of the Purkinje cells in normal, subnormal, and senescent human cerebella with some notes on functional organisation . Journal of Comparative Neurology , 30 : 229 – 252 .
   Google Scholar
• Fiez , J. A. 1996 . Cerebellar contributions to cognition . Neuron , 116 : 13 – 15 .
   Web of Science ®Google Scholar
• Fitts , P. M. and Deininger , R. L. 1954 . S-R compatibility: Correspondence among paired elements within stimulus and response codes . Journal of Experimental Psychology , 48 : 483 – 492 .
   PubMedGoogle Scholar
• Fitts , P. M. and Seeger , C. M. 1953 . S-R compatibility: Spatial characteristics of stimulus and response codes . Journal of Experimental Psychology , 46 : 199 – 210 .
   PubMedGoogle Scholar
• Fliess , J. L. 1986 . The design and analysis of clinical experiments , New York : Wiley .
   Google Scholar
• Folstein , M. F. , Folstein , S. E. and McHugh , P. R. 1975 . Mini-Mental State: A practical method for grading the cognitive state of patients for the clinician . Journal of Psychiatric Research , 12 : 189 – 198 .
   PubMed Web of Science ®Google Scholar
• Fuster , J. M. 1989 . The prefrontal cortex: Anatomy, physiology, and neuropsychology of the frontal lobe, , 2nd ed. , New York : Raven Press .
   Google Scholar
• Gibson , J. J. 1966 . The senses considered as perceptual systems , Boston : Houghton Mifflin .
   Google Scholar
• Goldman-Rackic , P. S. 1993 . Specification of higher cortical functions . Journal of Head Trauma Rehabilitation , 8 : 13 – 23 .
   Google Scholar
• Grafman , J. , Litvan , I. , Massaquoi , S. , Stewart , M. , Sirigu , A. and Hallett , M. 1992 . Cognitive planning deficits in patients with cerebellar atrophy . Neurology , 42 : 1493 – 1496 .
   PubMed Web of Science ®Google Scholar
• Grasso , R. , Prevost , P. , Ivanenko , Y. P. and Berthoz , A. 1998 . Eye-head coordination for the steering of locomotion in humans: An anticipatory synergy . Neuroscience Letters , 253 : 115 – 118 .
   PubMed Web of Science ®Google Scholar
• Guralnik , J. M. , Simonsick , E. M. , Ferrucci , L. , Glynn , R. J. , Berkman , L. F. Blazer , D. G. 1994 . A short physical performance battery assessing lower extremity function with self-reported disability and prediction of mortality and nursing home admission . Journal of Gerontology: Medical Science , 49 : M85 – M94 .
   Web of Science ®Google Scholar
• Harada , N. , Chi , V. , Damron-Rodriquez , J. , Fowler , E. , Siu , A. and Reuben , D. B. 1995 . Screening for balance and mobility impairment in elderly individuals living in residential care facilities . Physical Therapy , 75 : 462 – 469 .
   PubMed Web of Science ®Google Scholar
• Heaton , R. K. 1981 . Wisconsin Card Sorting Test Manual , Odessa , FL : Psychological Assessment Resources .
   Google Scholar
• Hollands , M. A. and Marple-Horvat , D. E. 1996 . Visually guided stepping under conditions of step cycle-related denial of visual information . Experimental Brain Research , 109 : 343 – 356 .
   PubMed Web of Science ®Google Scholar
• Hollands , M. A. and Marple-Horvat , D. E. 2001 . Coordination of eye and leg movements during visually guided stepping . Journal of Motor Behavior , 33 : 205 – 216 .
   PubMed Web of Science ®Google Scholar
• Hollands , M. A. , Marple-Horvat , D. E. , Henkes , S. and Rowan , A. K. 1995 . Human eye movements during visually guided stepping . Journal of Motor Behavior , 27 : 155 – 163 .
   PubMed Web of Science ®Google Scholar
• Hollands , M. A. , Patla , A. E. and Vickers , J. N. 2002 . “Look where you're going”: Gaze behavior associated with maintaining and changing the direction of locomotion . Experimental Brain Research , 143 : 221 – 230 .
   PubMed Web of Science ®Google Scholar
• Imai , T. , Moore , S. T. and Raphan , T. 2001 . Interaction of the body, head, and eye during walking and turning . Experimental Brain Research , 136 : 1 – 18 .
   PubMed Web of Science ®Google Scholar
• Ivnik , R. J. , Malee , J. F. , Smith , G. E. , Tangalos , E. G. and Peterson , R. C. 1999 . Neuropsychological tests: Norms above age 55: COWAT, BNT, MAE Token, WRAT-R Reading, AMNART, Stroop, TMT, and JLO . Clinical Neuropsychologist , 10 : 262 – 278 .
   Web of Science ®Google Scholar
• Ivry , R. B. and Keele , S. W. 1989 . Timing functions of the cerebellum . Journal of Cognitive Neuroscience , 1 : 136 – 152 .
   PubMedGoogle Scholar
• Johansson , R. S. , Westling , G. , Backstrom , A. and Flanagan , J. R. 2001 . Eye-hand coordination in object manipulation . Journal of Neuroscience , 21 : 6917 – 6932 .
   PubMed Web of Science ®Google Scholar
• Kumar , A. and Krol , G. 1992 . Binocular infrared oculography . Laryngoscope , 102 : 367 – 378 .
   PubMed Web of Science ®Google Scholar
• Lajoie , Y. , Teasdale , N. , Bard , C. and Fleury , M. 1996 . Attentional demands for walking: Age-related changes , Amsterdam : Elsevier .
   Google Scholar
• Leiner , H. C. , Leiner , A. L. and Dow , R. S. 1991 . The human cerebro-cerebellar system: Its computing, cognitive, and language skills . Behavioral Brain Research , 44 : 113 – 128 .
   PubMed Web of Science ®Google Scholar
• Lezak , M. D. 1995 . Neuropsychological assessment, , 3rd ed. , New York : Oxford University Press .
   Google Scholar
• Lord , S. R. and Fitzpatrick , R. C. 2001 . Choice stepping reaction time A composite measure of falls risk in older people . Journal of Gerontology: Medical Science , 56A : M627 – M632 .
   Google Scholar
• Nevitt , M. C. , Cummings , S. R. and Hudes , E. S. 1991 . Risk factors for injurious falls. . Journal of Gerontology: Medical Science , 46 : M164 – M170 .
   Google Scholar
• Parsons , L. M. , Bower , J. M. , Gao , J.-H. , Xiong , J. , Li , J. and Fox , P. T. 1997 . Lateral cerebellar hemispheres actively support sensory acquisition and discrimination rather than motor control . Learning and Memory , 4 : 49 – 62 .
   PubMed Web of Science ®Google Scholar
• Patla , A. E. and Vickers , J. N. 1997 . Where and when to we look as we approach and step over an obstacle in the travel path? . NeuroReport , 8 : 3661 – 3665 .
   PubMed Web of Science ®Google Scholar
• Persad , C. C. , Giordani , B. , Chen , H. C. , Ashton-Miller , J. A. , Alexander , N. B. Wilson , C. S. 1995 . Neuropsychological predictors of complex obstacle avoidance in healthy older adults . Journal of Gerontology: Psychological Science , 50B : P272 – P277 .
   Google Scholar
• Portney , L. G. and Watkins , M. P. 1993 . Foundations of clinical research: Applications to practice , London : Appleton and Lange .
   Google Scholar
• Proctor , R. W. and Reeve , T. G. 1990 . Stimulus-response compatibility: An integrated perspective , Amsterdam : Elsevier Science .
   Google Scholar
• Reitan , R. M. 1958 . The validity of the trail making test as an indicator of organic brain damage . Perception and Motor Skills , 8 : 271 – 276 .
   Google Scholar
• Sjobeck , M. , Dahlen , S. and Englund , E. 1999 . Neuronal loss in the brainstem and cerebellum—Part of the normal aging process? A morphometric study of the vermis of the cerebelli and inferior olivary nucleus . Journal of Gerontology: Biological Science , 54A : B363 – B368 .
   Google Scholar
• Spreen , O. and Strauss , E. 1998 . A compendium of neuropsychological tests: Administration, norms, and commentary, , 2nd ed. , New York : Oxford University Press .
   Google Scholar
• Taga , G. 1998 . A model of the neuro-musculo-skeletal system for anticipatory adjustment of human locomotion . Biological Cybernetics , 78 : 9 – 17 .
   PubMed Web of Science ®Google Scholar
• Tinetti , M. E. and Speechley , M. 1989 . Prevention of falls among the elderly . New England Journal of Medicine , 320 : 1055 – 1059 .
   PubMed Web of Science ®Google Scholar
• Tinetti , M. E. , Speechley , M. and Ginter , S. F. 1988 . Risk factors for falls among elderly persons living in the community . New England Journal of Medicine , 319 : 1701 – 1707 .
   PubMed Web of Science ®Google Scholar
• Torvik , A. S. , Torp , S. and Lindboe , C. F. 1986 . Atrophy of the cerebellar vermis in aging. A morphometric and histologic study . Journal of Neuroscience , 76 : 283 – 294 .
   Google Scholar