I look forward to some productive weeks ahead of us: Malin and Marissa have both returned to the lab this week, after some long needed rest. We have a good supply of hoverflies, thanks to Sarah's and Malin's efforts. We are about to build two news set-ups. And, Olga's a my review got accepted. Good times, indeed!
By Malin: I have now collected the larvae that will turn into the flies I will be working with hopefully all autumn and winter, so I'd like to share some pictures from the trip. This years collection was a bit of an adventure with a gathering storm visible on the horizon and rain that was nice enough to hold up just long enough for us to finish the collection. The collection was made extra special this year since I brought my mother along to show how most of my science projects gets started.
By Sarah Nicholas - FlyFly 3.1 in use, showing a 3D target to a hoverfly, while recording from the ventral nerve cord.
The Chart trace to the left shows the response to 3 repeats of the same stimulus shown above, with the raw data recorded from the ventral nerve cord shown in red and the timing of the stimulus represented in green.
By Richard Leibbrandt - The latest version of the FlyFly software is now available for download on this site. You can click on the "Software" tab above to locate it.
FlyFly 3.1 contains three new stimuli:
Starfield 2 is the stimulus to create a general 3-dimensional "cloud" of dots that can move together via translation, or rotation around one of the XYZ axes. (See an earlier post from me for a video of
Starfield 2). The older cylindrical starfield is still available as "Starfield 1".
Target3D creates a circular target that can move along a 3-dimensional trajectory. It is the 3-D version of "Rect Target". We are using it in conjunction with Starfield 2 to create a target moving against background clutter, in order to study the effects of a moving background on target-detecting neurons in the fly.
ImageTarget is the "image" version of "Rect Target". It allows you to move a specified image along a 2-dimensional trajectory. We propose to use this stimulus to find out more about the kinds of visual features that target-tracking neurons are sensitive to.
The hoverfly vision group can be found at 2 locations: At Flinders University in Adelaide, Australia, and at Uppsala University in Sweden.