Changes in event-related potentials associated with postural adaptation during floor oscillation

Fujiwara, Katsuo; Maeda, Kaoru; Irei, Mariko; Mammadova, Aida; Kiyota, Naoe

doi:10.1016/j.neuroscience.2012.03.027

Cited by 9 publications

(21 citation statements)

References 21 publications

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“…This is supported by results showing that peak gastrocnemius activity occurred at almost the same time as the anterior reversal, the gastrocnemius activity had the largest cross-correlation coefficient with floor oscillation, and there was a significant correlation between time of peak ERP and time of peak gastrocnemius activity after adaptation 36) . In addition, sensory information from joint receptors in the foot and cutaneous mechanoreceptors in the sole may play important roles in the perception of floor oscillations 47,48) , as the anteroposterior movement of the lateral malleolus that accompanies foot movement is synchronized with the oscillation 30) .…”

Section: Postural Control and Cnv During Transient Floor Translationssupporting

confidence: 56%

“…Furthermore, these studies reported that the decrease in upper body sway was not observed with eyes closed. However, the decrease becomes clear after sufficient adaptation 36) . In the first trial, gastrocnemius and tibialis anterior were strongly activated.…”

Section: Postural Control During Transient Floor Translationsmentioning

confidence: 97%

“…In order to investigate adaptation in postural preparation and attention during periodic floor oscillations, ERPs that reflect activation of the frontal lobe have been measured 36) . The experiment consisted of two tasks with eyes closed: an adaptation to floor oscillation task, and a finger flexion task in concert with the anterior and posterior reversals of the floor oscillation.…”

Section: Postural Control and Cnv During Transient Floor Translationsmentioning

confidence: 99%

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Anticipatory postural control during arm movements and floor translation

Fujiwara

2013

JPFSM

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Many researchers have analyzed dynamic postural control during voluntary arm movements and floor translation, focusing on the anticipatory activation of postural muscles in which the function of frontal lobe is involved. In this review, I address the postural muscle activation preceding arm movements, and consider the effect of arm movement dynamics, behavioral condition, postural set and postural movement pattern. I also address the anticipatory postural control during transient or periodical floor translations, and consider motor preparation, attentional allocation, and the use of event-related brain potentials to investigate frontal lobe activation.

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Section: Postural Control and Cnv During Transient Floor Translationssupporting

confidence: 56%

Section: Postural Control During Transient Floor Translationsmentioning

confidence: 97%

Section: Postural Control and Cnv During Transient Floor Translationsmentioning

confidence: 99%

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Anticipatory postural control during arm movements and floor translation

Fujiwara

2013

JPFSM

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“…Fujiwara et al (2007) described adaptation of the balancing strategy to continuous floor oscillation. By recording event-related potentials, reflecting cortical activation by sensory information related to the postural disturbance, they suggested that attention to information processing decreases with adaptation (Fujiwara et al, 2012, 2016). Mierau et al (2015) also reported adaptation of the negative cortical potential and reduced muscle co-contraction during a prolonged balancing task under critical standing-balance condition.…”

Section: Introductionmentioning

confidence: 99%

Calibration of the Leg Muscle Responses Elicited by Predictable Perturbations of Stance and the Effect of Vision

Sozzi

Nardone

Schieppati

2016

Front. Hum. Neurosci.

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Motor adaptation due to task practice implies a gradual shift from deliberate control of behavior to automatic processing, which is less resource- and effort-demanding. This is true both for deliberate aiming movements and for more stereotyped movements such as locomotion and equilibrium maintenance. Balance control under persisting critical conditions would require large conscious and motor effort in the absence of gradual modification of the behavior. We defined time-course of kinematic and muscle features of the process of adaptation to repeated, predictable perturbations of balance eliciting both reflex and anticipatory responses. Fifty-nine sinusoidal (10 cm, 0.6 Hz) platform displacement cycles were administered to 10 subjects eyes-closed (EC) and eyes-open (EO). Head and Center of Mass (CoM) position, ankle angle and Tibialis Anterior (TA) and Soleus (Sol) EMG were assessed. EMG bursts were classified as reflex or anticipatory based on the relationship between burst amplitude and ankle angular velocity. Muscle activity decreased over time, to a much larger extent for TA than Sol. The attenuation was larger for the reflex than the anticipatory responses. Regardless of muscle activity attenuation, latency of muscle bursts and peak-to-peak CoM displacement did not change across perturbation cycles. Vision more than doubled speed and the amount of EMG adaptation particularly for TA activity, rapidly enhanced body segment coordination, and crucially reduced head displacement. The findings give new insight on the mode of amplitude- and time-modulation of motor output during adaptation in a balancing task, advocate a protocol for assessing flexibility of balance strategies, and provide a reference for addressing balance problems in patients with movement disorders.

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“…In order to adapt to a postural disturbance, the anticipation of disturbance timing and preparation for the disturbance are required functions [6,7]. The main brain parts executing these functions are the frontal lobe, including the prefrontal cortex, supplementary motor area, premotor area, and primary motor area [8,9].…”

Section: Introductionmentioning

confidence: 99%

Adaptation changes in dynamic postural control and contingent negative variation during repeated transient forward translation in the elderly

Maekawa

Fujiwara

Kiyota

et al. 2013

J Physiol Anthropol

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BackgroundAdaptation changes in postural control and contingent negative variation (CNV) for the elderly were investigated during repeated forward floor translation.MethodsFifteen healthy elderly persons, living in the suburban area of Kanazawa City, Japan, underwent backward postural disturbance by a forward-floor translation (S2) 2 s after an auditory warning signal (S1). A set with 20 trials was repeated until a negative peak of late CNV was recognized in the 600-ms period before S2, and the last set was defined as the final set. Electroencephalograms, center of foot pressure in the anteroposterior direction (CoPap), and electromyograms of postural muscles were analyzed.ResultsCoPap displacement generated by the floor translation was significantly decreased until the twelfth trial in the first set, and mean CoPap displacement was smaller in the second and final sets than in the first set. The mean displacement was significantly smaller in the final set than the previous set. A late CNV with a negative peak was not recognized in the first and second sets. However, most subjects (13/15) showed a negative peak by the fourth set, when the late CNV started to increase negatively from about 1,000 ms after S1 and peaked at about 300 ms before S2. At about 160 ms before the CNV peak, the CoPap forward shift started. The increase in timing of the gastrocnemius activity related to the CoPap shift was significantly correlated with the CNV peak timing (r = 0.64). After S2, peak amplitudes of the anterior postural muscles were significantly decreased in the final set compared to the first set.ConclusionsIt was demonstrated that even for the elderly, with so many repetitions of postural disturbance, a late CNV with a negative peak was recognized, leading to accurate postural preparation. This suggests the improvement of frontal lobe function (e.g., anticipatory attention and motor preparation) in the elderly.

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Changes in event-related potentials associated with postural adaptation during floor oscillation

Cited by 9 publications

References 21 publications

Anticipatory postural control during arm movements and floor translation

Anticipatory postural control during arm movements and floor translation

Calibration of the Leg Muscle Responses Elicited by Predictable Perturbations of Stance and the Effect of Vision

Adaptation changes in dynamic postural control and contingent negative variation during repeated transient forward translation in the elderly

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