SUBSCRIBE TO MY YOUTUBE CHANNEL & HELP SUPPORT BATS

How neurons in bats' brains ensure a safe flight


As nocturnal animals, bats are perfectly adapted to a life without light. They emit echolocation sounds and use the delay between the reflected echoes to measure distance to obstacles or prey. In their brains, they have a spatial map representing different echo delays. A study carried out by researchers at Technische Universit√§t M√ľnchen (TUM) has shown for the first time that this map dynamically adapts to external factors.

Closer objects appear larger

When a bat flies in too close to an object, the number of activated neurons in its brain increases. As a result, the object appears disproportionately larger on the bat's brain map than objects at a safe distance, as if it were magnified. "The map is similar to the navigation systems used in cars in that it shows bats the terrain in which they are moving," explains study director Dr. Uwe Firzlaff at the TUM Chair of Zoology. "The major difference, however, is that the bats' inbuilt system warns them of an impending collision by enhancing neuronal signals for objects that are in close proximity."
Bats constantly adapt their flight maneuvers to their surroundings to avoid collisions with buildings, trees or other animals. The ability to determine lateral distance to other objects also plays a key role here. Which is why bats process more spatial information than just echo delays. "Bats evaluate their own motion and map it against the lateral distance to objects," elaborates the researcher.

Brain processes complex spatial information

In addition to the echo reflection time, bats process the reflection angle of echoes. They also compare the sound volume of their calls with those of the reflected sound waves and measure the wave spectrum of the echo. "Our research has led us to conclude that bats display much more spatial information on their acoustic maps than just echo reflection."

The results show that the nerve cells interpret the bats' rapid responses to external stimuli by enlarging the active area in the brain to display important information. "We may have just uncovered one of the fundamental mechanisms that enables vertebrates to adapt flexibly to continuously changing environments," concludes Firzlaff.

Story Source:
The above post is reprinted from materials provided by Technische Universitaet Muenchen. Note: Materials may be edited for content and length.

Journal Reference:
Sophia K. Bartenstein, Nadine Gerstenberg, Dieter Vanderelst, Herbert Peremans, Uwe Firzlaff. Echo-acoustic flow dynamically modifies the cortical map of target range in bats. Nature Communications, 2014; 5 DOI: 10.1038/ncomms5668


COMMENTS

BatsRule!/\^._.^/\Help Save WildLife
Name

Articles,67,Audio,15,Backyard,10,Barbed Wire,21,Bat Art,34,Bat Books,70,Bat Box,26,Bat Clothing,13,Bat Issues,490,Bats for Children,25,Bats for the Home,61,Electrocution,7,Events,33,info on bats,454,Jackie Sparrow,22,Microbats,409,Misc,63,Netting,31,Newsletter,4,Promoting,124,Rehab,60,Rehab 2011,1,Rehab 2012,19,Rehab 2013,10,Rehab 2014,6,Rehab 2015,103,Rehab 2016,99,Rehab 2017,9,Release Cage,2,RESCUE,59,Rescue 2012,3,RESCUE 2013,11,RESCUE 2014,8,RESCUE 2015,24,Rescue 2016,12,RESCUE 2017,1,Rob Mies,11,Shooting,2,Vegetation,23,Video,420,Virus,110,WebSites-Bat,46,
ltr
item
Megabats and Microbats: How neurons in bats' brains ensure a safe flight
How neurons in bats' brains ensure a safe flight
https://4.bp.blogspot.com/-WgM-lJxSSB8/VTVDc4uWABI/AAAAAAACEAM/Td3wDAa_DBQ/s1600/bat_writer_articles.jpg
https://4.bp.blogspot.com/-WgM-lJxSSB8/VTVDc4uWABI/AAAAAAACEAM/Td3wDAa_DBQ/s72-c/bat_writer_articles.jpg
Megabats and Microbats
http://www.batsrule.info/2016/02/how-neurons-in-bats-brains-ensure-safe.html
http://www.batsrule.info/
http://www.batsrule.info/
http://www.batsrule.info/2016/02/how-neurons-in-bats-brains-ensure-safe.html
true
4238281482117672351
UTF-8
Loaded All Posts Not found any posts VIEW ALL Readmore Reply Cancel reply Delete By Home PAGES POSTS View All RECOMMENDED FOR YOU LABEL ARCHIVE SEARCH ALL POSTS Not found any post match with your request Back Home Sunday Monday Tuesday Wednesday Thursday Friday Saturday Sun Mon Tue Wed Thu Fri Sat January February March April May June July August September October November December Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec just now 1 minute ago $$1$$ minutes ago 1 hour ago $$1$$ hours ago Yesterday $$1$$ days ago $$1$$ weeks ago more than 5 weeks ago Followers Follow THIS CONTENT IS PREMIUM Please share to unlock Copy All Code Select All Code All codes were copied to your clipboard Can not copy the codes / texts, please press [CTRL]+[C] (or CMD+C with Mac) to copy