The effects of various visual conditions on trunk control during ambulation in chronic post stroke patients

Aoki, Osamu; Otani, Yoshitaka; Morishita, Shinichiro; Domen, Kazuhisa

doi:10.1016/j.gaitpost.2016.12.018

Cited by 13 publications

(9 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For walking, we were able to identify only a single investigation of DWG's effect on postural steadiness [25]. According to this report, acceleration of the lumbar spine (at the level of L3 vertebra) was reduced in all three dimensions (i.e.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Gazing down increases standing and walking postural steadiness

et al. 2021

View full text Add to dashboard Cite

When walking on an uneven surface or complex terrain, humans tend to gaze downward. This behaviour is usually interpreted as an attempt to acquire useful information to guide locomotion. Visual information, however, is not used exclusively for guiding locomotion; it is also useful for postural control. Both locomotive and postural control have been shown to be sensitive to the visual flow arising from the respective motion of the individual and the three-dimensional environment. This flow changes when a person gazes downward and may present information that is more appropriate for postural control. To investigate whether downward gazing can be used for postural control, rather than exclusively for guiding locomotion, we quantified the dynamics of standing and walking posture in healthy adults, under several visual conditions. Through these experiments we were able to demonstrate that gazing downward, just a few steps ahead, resulted in a steadier standing and walking posture. These experiments indicate that gazing downward may serve more than one purpose and provide sufficient evidence of the possible interplay between the visual information used for guiding locomotion and that used for postural control. These findings contribute to our understanding of the control mechanism/s underlying gait and posture and have possible clinical implications.

show abstract

Section: Discussionmentioning

confidence: 99%

“…Therefore, postural control may provide a complementary, and in some cases an alternative, explanation for DWG behaviour. In support of such a possibility, DWG has been reported to enhance postural steadiness for standing [24] and walking [25] stroke survivors.…”

Section: Introductionmentioning

confidence: 99%

Gazing down increases standing and walking postural steadiness

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Although we suggest this effect was primarily derived from changes in visual information, other mechanisms/influences, such as biomechanical, proprioceptive and vestibular, are quite possible. For walking, we were able to identify only a single investigation of DWG's effect on postural steadiness (Aoki et al, 2017). According to this report, acceleration of the lumbar spine (at the level of L3 vertebra) was reduced in all three dimensions (i.e.…”

Section: Rs Shoesmentioning

confidence: 94%

“…Therefore, postural control may provide a complementary, and in some cases an alternative, explanation for DWG. In support of such a possibility, DWG has been reported to enhance postural steadiness for standing (Aoki et al, 2014) and walking (Aoki et al, 2017) stroke survivors.…”

Section: Introductionmentioning

confidence: 92%

Downward Gazing for Steadiness

Koren

Mairon

Sofer

et al. 2020

Preprint

View full text Add to dashboard Cite

When walking on an uneven surface or complex terrain, humans tend to gaze downward.Previous investigations indicate that visual information can be used for online control of stepping. Behavioral investigations suggest that, during walking, the availability of visual information increases stepping accuracy, but probably through a feedforward control mechanism. Consequently, downward gazing (DWG) is usually interpreted as a strategy used to acquire useful information for online and/or feedforward control of stepping.Visual information is not exclusively used for guiding locomotion; a wealth of literature has been published on the usefulness of visual information for feedback postural control. Critically, postural control has been shown to be sensitive to the visual flow arising from the respective motion of the individual and the 3D environment.To investigate whether DWG can be used to enhance feedback control of posture, rather than feedforward/online control of gait, we conducted a series of experiments that explore this possible interplay. Through these experiments we were able to show that DWG, just a few steps ahead, results in a steadier standing and walking posture, without the need for accuracy. Moreover, we were able to demonstrate that humans resort to DWG when walking stability is compromised, even when destabilizing features were visually unpredictable.This series of experiments provides sufficient evidence of the possible interplay between visual information used for guiding locomotion and that used for postural control. Moreover, this evidence raises concerns regarding the way we interpret gaze behavior without the knowledge of the type and use of the information gathered.

show abstract

“…Eye fixation is important for keeping balance in normal situations. After stroke, patients may be even more dependent on fixation while attempting to keep static or dynamic balance 8 . Visual disorders after a stroke may include spontaneous nystagmus 9 , abnormalities in motricity 10,11 and perception 12,13 , which can affect either one or both eyes 14 .…”

mentioning

confidence: 99%

Evaluation of vestibular and oculomotor functions in individuals with dizziness after stroke

Pimentel

Filha

2019

Arq. Neuro-Psiquiatr.

View full text Add to dashboard Cite

Changes in postural balance and visual complaints are frequent consequences of stroke. We aimed to investigate the symptoms and the vestibular and oculomotor functions of patients with dizziness post ischemic and hemorrhagic stroke and compare the results among them. Methods: Fifty patients with dizziness after stroke were evaluated through a clinical anamnesis and computerized vector electronystagmography: calibration of ocular movements, spontaneous nystagmus, semi-spontaneous nystagmus, pendular tracking, optokinetic nystagmus, rotary chair testing, and the caloric test. Results: All patients complained of dizziness, especially imbalance. Ischemic stroke in the carotid territory was the prevalent type. Visual complaints were reported by 56% of the sample and were related to abnormalities in oculomotor and caloric tests. Conclusion: The occurrence of visual symptoms was related to some abnormalities in the vector electronystagmography tests, being more frequent in cases of stroke in the vertebrobasilar system, and with oscillopsia and reduced visual acuity as symptoms.

show abstract

The effects of various visual conditions on trunk control during ambulation in chronic post stroke patients

Cited by 13 publications

References 29 publications

Gazing down increases standing and walking postural steadiness

Gazing down increases standing and walking postural steadiness

Downward Gazing for Steadiness

Evaluation of vestibular and oculomotor functions in individuals with dizziness after stroke

Contact Info

Product

Resources

About