Cockroaches could help build better robots in future
- Govt slams opposition for politics over Army Chief's 'tough action' in Valley remarks
- Terror funding: Pakistan to face heat at Paris meet this weekend
- Urjit Patel: Impact of demonetisation will be a sharp 'V', banks have done a Herculean job
- Tamil Nadu: O Panneerselvam alone for now, AIADMK friends have bigger things in mind
- Pakistan Sehwan shrine blast: All you need to know about the terror attack
Researchers have found that running cockroaches start to recover from being shoved sideways before their dawdling nervous system kicks in to tell their legs what to do.
These new insights on how biological systems stabilize could one day help engineers design steadier robots and improve doctors' understanding of human gait abnormalities.
In experiments, the roaches were able to maintain their footing mechanically using their momentum and the spring-like architecture of their legs, rather than neurologically, relying on impulses sent from their central nervous system to their muscles.
"The response time we observed is more than three times longer than you'd expect," Shai Revzen, an assistant professor of electrical engineering and computer science, as well as ecology and evolutionary biology, at the University of Michigan researchers have found.
"What we see is that the animals' nervous system is working at a substantial delay," Revzen said. "It could potentially act a lot sooner, within about a thirtieth of a second, but instead, it kicks in after about a step and a half or two steps about a tenth of a second. For some reason, the nervous system is waiting and seeing how it shapes out," he said.
To arrive at their findings, the researchers sent 15 cockroaches (one-by-one, in 41 trials) running across a small bridge onto a placemat-sized cart on wheels. The cart was attached to an elastic cord that was pulled tight like a loaded slingshot and held in place with a strong magnet on the other side. Once a roach was about a body length onto the cart, the researchers released the magnet, sending the cart hurling sideways. The force was equivalent to a sumo wrestler hitting a jogger with a flying tackle, said Revzen, adding that cockroaches are much more stable than humans.
To gather detailed information about the roaches' gait, the researchers utilized a technique Revzen developed several years ago called kinematic phase analysis. It involves using a high-speed camera to constantly measure the position of each of the insects' six feet as well as the ends of its body.
- Demand for quotas by powerful groups draws on perceptions, does injustice to truly disadvantaged
- It is time for courts to re-imagine judicial procedures and build digital solutions to fix logjam
- Governor’s role in the Tamil Nadu drama revives questions about the politicisation of the office
- Petroleum and health ministries need to push access to LPG, promote its use
- Trump’s Islamophobia will play an ominous role in reshaping the strategic map of the Middle East
- Migration helps increase world income and benefits the host country’s economy