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DTSTART:20180325T030000
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DTSTAMP:20260404T110043Z
UID:5b8fe9c904ebe838659074@ist.ac.at
DTSTART:20180920T133000
DTEND:20180920T143000
DESCRIPTION:Speaker: David Keays\nhosted by Simon Hippenmeyer\nAbstract: Us
 ing maps\, compasses\, and sextants\, mariners in the early 1500's develop
 ed the first methods to navigate the open sea\; heralding an age of explor
 ation as humanity set sail for the horizon. Yet long before this time evol
 ution had equipped life on the planet with a biological global positioning
  system that was far superior to those early navigational tools  the Magne
 tic Sense. While there is unequivocal behavioural evidence demonstrating t
 hat this faculty exists\, it is the least understood of all senses. The lo
 cation of the primary sensors\, the underlying biophysical mechanisms\, an
 d the neurological basis of the sense are unknown. Currently\, there are t
 hree ideas that aim to explain how magnetosensation might work: (1) a ligh
 t sensitive radical pair based model\; (2) magnetite based magnetoreceptio
 n\; and (3) electromagnetic induction. In this lecture I will present our 
 work that has tested the magnetite theory of magnetosensation\, a concept 
 that argues that small crystals of the iron oxide magnetite act as an intr
 acellular compass transducing magnetic information into a neuronal impulse
 . I will present our work that challenges the existence of a magnetic sens
 e system in the beak of birds\, our discovery of an iron-rich organelle in
  avian hair cells\, our in vivo assay that assesses magnetically induced n
 euronal activation\, and our recently established whole brain clearing exp
 eriments. In short\, I will tell you about our search for the magnetosenso
 rs.
LOCATION:Seminar Room\, Lab Building East\, ISTA
ORGANIZER:lmarr@ist.ac.at
SUMMARY:David Keays: The Search for the Magnetoreceptors
URL:https://talks-calendar.ista.ac.at/events/1390
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