Effects of Amplitude and Predictability of Perturbations to the Arm on Anticipatory and Reactionary Muscle Responses to Maintain Balance

In this study we applied fast ramp perturbations to the hand in anterior, posterior, medial and lateral directions. The effects of perturbation predictability and amplitude on the postural response of upper limb, trunk and lower limb muscles were investigated. Perturbations were applied either in blocks of constant amplitude and direction (predictable) or with direction and amplitude varying randomly (random) from trial to trial.

Source: Journal of Electromyography and Kinesiology - May 30, 2017 Category: Neurology Authors: Ali Forghani, Richard Preuss, Theodore Edgar Milner Source Type: research