Team:ETHZ Basel/Achievements/E lemming

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The E. lemming

This video shows the E. lemming in action.
The unprocessed microscope images are available here.

... and this the brother of the E. lemming, who decided to swim several times nearly out of focus and out of the field of view such that he had to be tracked manually..
The unprocessed microscope images are available here.

Figure 1: Angle of the E. lemming during one measurement (see Video 1) as calculated from the central differences of its positions. The estimated reaction times between the switching of the blue light and the reactions of the E. lemming are marked in the image. For the reaction delay between switch-on of the light and straight swimming we obtained Δt1≈2.1s and Δt2≈3.0s. For the delay between the switch-off of the blue light and start of tumbling it was only possible to estimate the time delay for the second light pulse, Δt3≈2.4s. White background: blue light off. Light blue background: blue light on.

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