6. Neuromusculoskeletal modelling and the gain transition of a quadruped according to its speed in rats
This poster details a neuromusculoskeletal model of rat hind limbs during walking and trotting. Toeda and colleagues from Tokyo developed a musculoskeletal model of the fore- and hind limbs of the rat based on empirical anatomical data. To model the muscles, they focused on six prime muscle for the forelimbs, and seven muscles for hind limbs. respectively.
They present a neural system model invoking limb movement control, according to muscle synergy to account for coordinated structure in muscle activities, and postural feedback control, based on shoulder height, hip height and horizontal center of mass velocity. They present simulations of walking and trotting gait, and impose defects of the postural feedback system (by lesions to the cerebellum) to induce unstable gaits and tripping.
3. Because we’re all about that mouse, ‘bout that mouse, and gerbil….. ♫ ‘
There is a growing awareness of the link between compromised heart function and nervous system abnormalities. This point is beautifully conveyed in a poster presented by Dr. Anand Pandey and colleagues this coming Sunday at SfN. We are particularly excited to see how treadmill locomotion in rats is affected after cardiac arrest.