Stimulating a worm's posterior touch receptors (PVM and PLM) with laser light from pvm Watch Video
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Description: The nematode C. elegans shown here expresses Channelrhodopsin in its mechanosensory neurons (Pmec-4::ChR2::GFP ). When blue light shines on the worm's tail it stimulates the worm's posterior touch receptors (PVM and PLM). The worm experiences the sensation of being touched on the tail and it responds by accelerating forward. The laser is on when the words
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