Final ‘Joystick’ test results

on Monday, January 29th, 2024 11:30 | by

Over the course, control and test lines were experimented with under ‘Joystick’. The test lines include 13:0273-Gal 4 line, SS56699 line, and TH-C-AD; TH-D-DBD line. The tests were done under red and yellow light conditions.

Red light conditions:

Yellow light conditions:

Verification TH-C-AD;TH-D-DBD

on Monday, September 11th, 2023 9:52 | by

Confocal images with anti-GFP and anti-Brp staining of TH-C-AD;TH-D-DBD > mCD::GFP fly brains: A: 4 PPM 2 DANs per hemisphere marked with blue circles, three clusters of Kenyon cell bodies per hemisphere marked with white arrows. B: Five visible cell bodies of unidentified neurons marked with a blue circle in the left hemisphere. The neurons project into the lobula plate and the medulla. Strong fluorescence of cell bodies of the Kenyon cells projecting into the Mushroom bodies is visible. C: Unidentified neurons projecting into structures outside of the optic lobes especially the ventral lateral protocerebrum.

Joystick Results for 2-minute-testing

on Tuesday, May 30th, 2023 1:31 | by

The following figures show the results of the joystick test using the same test line as before. In addition, the flies were fed not only ATR but also 3IY (3-iodo-L-tyrosine), an inhibitor of dopamine synthesis. This was done to determine whether the previously observed effect was due to dopamine alone and could therefore be suppressed by the inhibitor, or whether other factors also influenced the flies’ behaviour in the joystick test.

Red light Joystick Results

on Monday, April 3rd, 2023 12:33 | by

Yellow light Joystick Results

on Monday, March 27th, 2023 11:57 | by

Update: Red light Joystick results

on Saturday, March 18th, 2023 1:28 | by

After the first full week of testing the three different fly lines with red light, we have analyzed the results. We are now able to provide a further update on our findings.

While the effect for the control groups seems to stay consistent with our previous findings, the effect for the positive control has weakened and is closer to the strength measured in previous experiments. We utilized the norpAP24;Gr28bd+TrpA1>Chrimson line for both our positive and negative controls.

Furthermore, the experimental group, which previously favored red light in the post-test, showed a more varied and inconclusive profile. We will need to conduct further testing to determine whether the previously observed effect was simply caused by the small sample size.

Another important discovery was the necessity of feeding the flies sugar water 5-10 minutes before the experiment in order to maintain their activity levels. This way the flies will be identified as a valid data point by the R-script and will ensure more and more accurate data. It is important to note that we will implement this feeding process in all future experiments to ensure consistency and accuracy of the data collected.

Red light Joystick Results

on Tuesday, March 14th, 2023 8:57 | by

The box plots show the performance indices (PIs) of each fly as one dot for each minute of the test and for the pre- and post-test periods. Values between 1 and -1 indicate preference for or avoidance of the light.
The light used is red and has an intensity of 400 to 470 lux, the LEDs have a voltage of 7.5 volts. The control flies observed seem to show a stronger effect than in previous tests, which could be due to the use of a thinner fishing line (0.6 mm), which is easier to place correctly in the clamp of the joystick machine.
For the negative and positive control we used the line norpAP24;Gr28bd+TrpA1>Chrimson.

Red Joystick Results

on Friday, September 23rd, 2022 6:55 | by

Experiments of all strains completed.

Yellow Joystick Results

on Friday, September 23rd, 2022 6:50 | by

Experiments for all strains completed.

Red Joystick Results

on Monday, September 19th, 2022 9:40 | by

Red joystick results of all strains. By Enes, Aslıhan, Vivi.