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UID:6640@i2m.univ-amu.fr
DTSTART;TZID=Europe/Paris:20201111T100000
DTEND;TZID=Europe/Paris:20201111T110000
DTSTAMP:20241120T201800Z
URL:https://www.i2m.univ-amu.fr/evenements/visually-guided-strategies-for-
 flight-through-cluttered-environments-in-insects-sridhar-ravi/
SUMMARY:Sridhar Ravi (School of Engineering and Information Technology\, UN
 SW Canberra at the Australian Defence Force Academy\, Australia): Visually
  guided strategies for flight through cluttered environments in insects - 
 Sridhar Ravi
DESCRIPTION:Sridhar Ravi: The natural habitat of insects that fly close to 
 the Earth’s surface can be challenging to navigate. The terrain is seldo
 m flat and unobstructed and instead it is complex\, consisting of a pletho
 ra of natural and artificial features. Once airborne insects are likely to
  encounter obstacles in collision course and will be tasked with performin
 g evasive manoeuvres. Insects are also small in size with tiny brains and 
 thus\, they are further constrained in the sensorimotor and neural apparat
 us that can be accommodated. Despite these challenges insects like bees di
 splay a remarkable ability to navigate through highly cluttered terrain. S
 everal previous studies have revealed the significant role of vision and m
 ore specifically optic flow\, in mediating navigation in unobstructed envi
 ronments. In cluttered environments\, the combination of stable sensing fo
 r obstacle detection and nimble manoeuvring for evasion poses unique chall
 enges. In our study we presented bumblebees with various types of spatial 
 clutter\, from solitary obstacles to constellations\, and sought further i
 nsights into their navigational “toolkit”. We analysed the finely reso
 lved measurements of the head and body orientation of bees in free flight 
 through the different environments that were also used to reconstruct the 
 instantaneous visual field of the bees and estimate the optic flow in the 
 different environments. In this talk I will present on how bees in free fl
 ight effectively decouple their sensing and motor systems and the salient 
 cues used for performing canonical tasks such as obstacle detection and ga
 p perception\, and the manoeuvres performed for collision avoidance and na
 vigating through tight spaces. Time permitting\, I will also present on ho
 w bees also learn to avoid invisible obstacles.\nCome along even if you ar
 e not into this stuff because there will be lots of cool highspeed videos!
 \nIOSSB Seminar
ATTACH;FMTTYPE=image/jpeg:https://www.i2m.univ-amu.fr/wp-content/uploads/2
 020/10/Sridhar_Ravi.jpg
CATEGORIES:Interdisciplinary online seminar series on
 Biolocomotion,Virtual event
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