Sensation & falls


How do we know the location of something we feel on our skin?

When we are touched on the skin, sensory receptors in that location fire and send a signal via nerves to the brain, but this is not enough to let us know where on our body the touch occurred. To decipher where the touch is on the body, the brain needs […]

Participant seated in the experimental apperatus. Visible are the leather sleeve and metal occluder positioned on the participant's left forearm. The skin on either side of the metal occluder was brushed (not pictured), and the effect this had on touch localization was assessed by participants pointing on a digitizing table (gray divider between the subject's body and left arm) where they felt the tactile target.

Balancing act: calf muscles and standing balance

Similar to a pencil balanced on a finger tip, the standing human body is inherently unstable (Loram & Lakie, 2002). The vertical projection of the body’s center of mass passes in front of the ankle when we stand, which means active plantar flexion of the ankle is required to maintain […]


Should we train proprioception in people with knee osteoarthritis?

Knee osteoarthritis (OA) is a painful condition that can substantially interfere with peoples’ daily activities. It will affect one in two people over their lifetime and is more likely in people who are overweight (Murphy et al., 2008). In light of the existing literature regarding joint function in people with […]


Accelerometers used to measure head jerk.

Older people really do have ‘jerkier’ movements

Up to one in three people over 65 fall each year (Masud & Morris, 2001) and many older people have impaired dynamic stability. However, a cause and effect relationship between gait speed, step variability, dynamic stability, and falls is complex. For example, older people may walk more slowly to compensate […]