Stroboscopic vision when interacting with multiple moving objects: Perturbation is not the same as elimination

Motivated by recent findings of improved perceptual processing and perceptual-motor skill following stroboscopic vision training, the current study examined the performance and acquisition effects of stroboscopic vision methods that afford a different visual experience. In Experiment 1, we conducted a within-subject design study to examine performance of a multiple object tracking (MOT) task in different stroboscopic vision conditions (Nike Vapor Strobe®, PLATO visual occlusion, intermittent display presentation) operating at 5.6, 3.2 or 1.8Hz. We found that participants maintained MOT performance in the Vapor Strobe condition irrespective of strobe rate. However, MOT performance deteriorated as strobe rate was reduced in the other two stroboscopic vision conditions. Moreover, at the lowest strobe rate (1.8Hz) there was an increase in probe reaction time, thus indicating an increased attentional demand due to the stroboscopic vision. In Experiment 2, we conducted a mixed design study to examine if practice in different stroboscopic vision conditions (Nike Vapor Strobe®, PLATO visual occlusion) influenced acquisition of a novel precision-aiming task (i.e., multiple object avoidance (MOA) task) compared to a normal vision group. Participants in the PLATO visual occlusion group exhibited worse performance during practice than the Vapor Strobe and normal vision groups. At post-test, the Vapor Strobe group demonstrated greater success and reduced end-point error than the normal vision and PLATO groups. We interpret these findings as showing that both an intermittent perturbation (Nike Vapor Strobe®) and elimination (PLATO visual occlusion, intermittent display presentation) of visual motion and form are more attention demanding (Experiment 1), however the intermittent perturbation, but not elimination, of visual motion and form can facilitate acquisition of perceptual-motor skill (Experiment 2) in situations where it is necessary to maintain and update a spatio-temporal representation of multiple moving objects

Alteration in corticospinal excitability following ankle joint manipulation

Therapeutic effects of joint manipulation (JM) largely have been attributed to changes in local tissues. Alteration in peripheral nerve function following joint manipulation has been documented. Recent studies suggest a possible role of the central nervous system in mediating changes in mobility after JM. The purpose of this study was to record changes in corticospinal excitability (CE) using Transcranial Magnetic Stimulation (TMS) due to ankle JM, and to correlate CE following ankle JM with changes in behavior and ankle range of motion

Alteration in corticospinal excitability following ankle joint manipulation

Therapeutic effects of joint manipulation (JM) largely have been attributed to changes in local tissues. Alteration in peripheral nerve function following joint manipulation has been documented. Recent studies suggest a possible role of the central nervous system in mediating changes in mobility after JM. The purpose of this study was to record changes in corticospinal excitability (CE) using Transcranial Magnetic Stimulation (TMS) due to ankle JM, and to correlate CE following ankle JM with changes in behavior and ankle range of motion