Alphachimp Studio > Pop!Tech > The New Naturalism > Tom Daniel
From Joho the Blog:
 Titled
"Bugs, Brains and Borgs: Reverse Engineering Moving Systems",...
[Daniel] shows how complex and messy systems are. E.g., he shows footage
of a hawk moth that hovers and sucks nectar from flowers at night and
the flowers are moving. That's a lot of data to process. He shows a
single cell in a moth brain that's excited if the visual field moves
to the right and not if the world moves the left. [He credits the grad
students who did the research — always nice to hear.] The neuron
responds more slowly than the wings — it takes a couple of wing
beats for the neuron to react. The neuron projects into the motor output
region. Antenna strain sensors respond to changes in position faster
than the visual systems do; that's how the moth knows its pitch and
yaw. Another neuron responds to the neurons that sense these changes.
This leads to the third thoracic ganglion that flexes the abdomen and
slows the wing beat, controlling the flight.
Listen to a podcast of the presentation. |