Age-Related Impairment of Hand Movement Perception Based on Muscle Proprioception and Touch

Neuroscience ◽  
2018 ◽  
Vol 381 ◽  
pp. 91-104 ◽  
Author(s):  
C. Landelle ◽  
A. El Ahmadi ◽  
A. Kavounoudias
Keyword(s):  
Hand Movement ◽  
Movement Perception ◽  
Muscle Proprioception ◽  
Age Related

Developmental profile of slow hand movement oscillation coupling in humans

2011 ◽  
Vol 105 (5) ◽  
pp. 2204-2212 ◽  
Author(s):  
Katherine M. Deutsch ◽  
John A. Stephens ◽  
Simon F. Farmer
Keyword(s):  
Hand Movement ◽  
Motor Units ◽  
Motor Output ◽  
Childhood Development ◽  
Emg Signal ◽  
Age Related ◽  
Central Origin ◽  
Motor Unit Synchronization ◽  
The Difference ◽  
Extensor Carpi Radialis

In adults, slow hand and finger movements are characterized by 6- to 12-Hz discontinuities visible in the raw records and spectra of motion signals such as acceleration. This pulsitile behavior is correlated with motor unit synchronization at 6–12 Hz as shown by significant coherence at these frequencies between pairs of motor units and between the motor units and the acceleration recorded from the limb part controlled by the muscle, suggesting that it has a central origin. In this study, we examined the correlation between this 6- to 12-Hz pulsatile behavior and muscle activity as a function of childhood development. Sixty-eight participants (ages 4–25 yr) performed static wrist extensions against gravity or slow wrist extension and flexion movements while extensor carpi radialis muscle electromyographic (EMG) and wrist acceleration signals were simultaneously recorded. Coherence between EMG and acceleration within the 6- to 12-Hz frequency band was used as an index of the strength of the relation between central drive and the motor output. The main findings of the study are 1) EMG-acceleration coherence increased with increases in age, with the age differences being greater under movement conditions and the difference between conditions increasing with age; 2) the EMG signal showed increases in normalized power with increases in age under both conditions; and 3) coherence under movement conditions was moderately positively correlated with manual dexterity. These findings indicate that the strength of the 6- to 12-Hz central oscillatory drive to the motor output increases through childhood development and may contribute to age-related improvements in motor skills.

The Effects of Brain Damage on the Performance of Hand Movement Sequences

2001 ◽  
Vol 2 (2) ◽  
pp. 140-144 ◽  
Author(s):  
Geoffrey A. Fox ◽  
Allison M. Fox
Keyword(s):  
Brain Damage ◽  
Hand Movement ◽  
Frontal Lobes ◽  
Neuropsychological Disorders ◽  
Age Related ◽  
Neuropsychological Evaluations ◽  
Remote System ◽  
System Disorder ◽  
The Brain ◽  
Movement Test

AbstractThe frontal lobes, if damaged, may lead to a host of divergent abnormalities, depending on the extent, site, depth, and laterality of the damage. Because of the extensive connections which exist between the frontal lobes and the other systems of the brain, damage to a more remote system may cause frontal system disorder through disconnection. The Hand Movement Test (HMT, Kaufman & Kaufman, 1983) is thought to be sensitive to damage affecting these systems, although the test was developed for use with children rather than adults. This paper examines the effects of three diverse neuropsychological disorders, where damage to the frontal lobes or to their interconnections has been implicated, on hand movement sequencing performance in adults. The three groups studied included patients diagnosed with alcohol-related brain damage (n = 57), patients diagnosed with mild traumatic brain injury (n = 21), and patients diagnosed with age-related dementia (n = 30). HMT performance was significantly poorer in all three clinical groups relative to controls, supporting the addition of this brief, paediatric test in neuropsychological evaluations assessing these disorders.

Age-Related Changes in Grip Force and Dynamics of Hand Movement

2003 ◽  
Vol 35 (1) ◽  
pp. 79-85 ◽  
Author(s):  
Martine A. Gilles ◽  
Alan M. Wing
Keyword(s):  
Grip Force ◽  
Hand Movement ◽  
Age Related ◽  
Age Related Changes

Retained intraocular metallic foreign body causing retinal detachment

2016 ◽  
Vol 2 (1) ◽  
pp. 56-60
Author(s):  
Bhim Bahadur Rai ◽  
Samten Dorji ◽  
Pema Zangmo ◽  
Thukten Tshering
Keyword(s):  
Foreign Body ◽  
Hand Movement ◽  
Anterior Segment ◽  
Cataract Extraction ◽  
Silicon Oil ◽  
Age Related ◽  
Entry Wound ◽  
The Right ◽  
Oil Injection ◽  
The Brain

A 60 year old farmer presented on 4th Sept, 2015with progressive diminution of vision in the right eye following trauma while hammering about a month previously. His vision was Hand Movement only in the right eye and 6/6 in left eye. The anterior segment showed normal findings, except mild anterior chamber reaction and an early cataract in the right eye. The left eye was normal except for an early age-related cataract. Fundoscopy revealed retained intra-ocular foreign body (ROOFB, subtotal RD with macula off in right eye. Interestingly, no entry wound was found. A B-scan and CT scan of the brain and orbit confirmed RIOFB and RD. On 9th September 23G PPV was done and RIOFB was removed. Fluid-air exchange, endolaser and silicon oil injection were done to attach the RD. On 6th February 2016 a cataract extraction with intraocular lens implantation and silicon oil removal was performed which improved the patient’s vision to 6/18p.

scholarly journals Normal aging affects unconstrained three-dimensional reaching against gravity with reduced vertical precision and increased co-contraction

2020 ◽  
Author(s):  
George F. Wittenberg ◽  
Jing Tian ◽  
Nick Kortzorg ◽  
Lore Wyers ◽  
Florian Van Halewyck ◽  
...  
Keyword(s):  
Older Adults ◽  
Young Adults ◽  
Upper Extremity ◽  
Degrees Of Freedom ◽  
Muscle Activation ◽  
Hand Movement ◽  
Three Dimensional ◽  
Reaching Movements ◽  
Shoulder Abduction ◽  
Age Related

AbstractReaching for an object in space forms the basis for many activities of daily living and is important in rehabilitation after stroke and in other neurological and orthopedic conditions. It has been the object of motor control and neuroscience research for over a century, but studies often constrain movement to eliminate the effect of gravity or reduce the degrees of freedom. In some studies, aging has been shown to reduce target accuracy, with a mechanism suggested to be impaired corrective movements. We sought first to explore the changes in control of shoulder and elbow joint movements that occur with aging during performance of reaching movements to different target heights with the normal effects of gravity, unconstrained hand movement, and stable target locations. Three-dimensional kinematic data and electromyography were collected in 14 young (25±6 years) and 10 older adults (68±3 years) during second-long reaches to three targets aligned vertically in front of the participants. Older adults took longer to initiate a movement than the young adults and were more variable and inaccurate in their initial and final movements. Target height had greater effect on trajectory curvature variability in older than young adults, with angle variability relative to target position being greater in older adults around the time of peak speed. There were significant age-related differences in use of the multiple degrees of freedom of the upper extremity, with less variability in shoulder abduction in the older group. Muscle activation patterns were similar, except for a higher biceps-triceps co-contraction and tonic levels of some proximal muscle activation. The path length of movements was not affected by age. These results show an age-related deficit in the motor planning and online correction of reaching movements against a predictable force (i.e., gravity). These results will facilitate interpretation of our forthcoming study of transcranial magnetic stimulation effects on the same task in these two populations, and is relevant to any study that seeks to measure the effect of pathological processes on upper extremity motor performance in the elderly.

Contribution of muscle proprioception to limb movement perception and proprioceptive decline with ageing

2021 ◽  
Vol 20 ◽  
pp. 180-185
Author(s):  
Caroline Landelle ◽  
Marie Chancel ◽  
Caroline Blanchard ◽  
Michel Guerraz ◽  
Anne Kavounoudias
Keyword(s):  
Limb Movement ◽  
Movement Perception ◽  
Muscle Proprioception

Cortical correlates of illusory hand movement perception in humans: A MEG study

2006 ◽  
Vol 1121 (1) ◽  
pp. 200-206 ◽  
Author(s):  
Laurence Casini ◽  
Patricia Romaiguère ◽  
Antoine Ducorps ◽  
Denis Schwartz ◽  
Jean-Luc Anton ◽  
...  
Keyword(s):  
Hand Movement ◽  
Movement Perception

Combined contribution of tactile and proprioceptive feedback to hand movement perception

2011 ◽  
Vol 1382 ◽  
pp. 219-229 ◽  
Author(s):  
Caroline Blanchard ◽  
Régine Roll ◽  
Jean-Pierre Roll ◽  
Anne Kavounoudias
Keyword(s):  
Hand Movement ◽  
Proprioceptive Feedback ◽  
Movement Perception

Effect of Bilateral Macular Scotomas from Age-Related Macular Degeneration on Reach-to-Grasp Hand Movement

2011 ◽  
Vol 52 (5) ◽  
pp. 2540 ◽  
Author(s):  
George T. Timberlake ◽  
Evanthia Omoscharka ◽  
Barbara M. Quaney ◽  
Susan A. Grose ◽  
Joseph H. Maino
Keyword(s):  
Macular Degeneration ◽  
Hand Movement ◽  
Age Related Macular Degeneration ◽  
Reach To Grasp ◽  
Age Related

Spindle shaped bodies in foveolar cones of the baboon retina

1989 ◽  
Vol 47 ◽  
pp. 960-961
Author(s):  
W. Krebs ◽  
I. Krebs
Keyword(s):  
Cross Sections ◽  
Inclusion Bodies ◽  
Photoreceptor Cells ◽  
Papio Anubis ◽  
Retinal Photoreceptor ◽  
Age Related ◽  
Cone Cells ◽  
Membrane Bound ◽  
Oriented Parallel ◽  
Shaped Inclusion

Various inclusion bodies occur in vertebrate retinal photoreceptor cells. Most of them are membrane bound and associated with phagocytosis or they are age related residual bodies. We found an additional inclusion body in foveal cone cells of the baboon (Papio anubis) retina.The eyes of a 15 year old baboon were fixed by immersion in cacodylate buffered glutaraldehyde (2%)/formaldehyde (2%) as described in detail elsewhere . Pieces of retina from various locations, including the fovea, were embedded in epoxy resin such that radial or tangential sections could be cut.Spindle shaped inclusion bodies were found in the cytoplasm of only foveal cones. They were abundant in the inner segments, close to the external limiting membrane (Fig. 1). But they also occurred in the outer fibers, the perikarya, and the inner fibers (Henle’s fibers) of the cone cells. The bodies were between 0.5 and 2 μm long. Their central diameter was 0.2 to 0. 3 μm. They always were oriented parallel to the long axis of the cone cells. In longitudinal sections (Figs. 2,3) they seemed to have a fibrous skeleton that, in cross sections, turned out to consist of plate-like (Fig.4) and tubular profiles (Fig. 5).

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