- 181
- Looming detection invariance in Drosophila descending neurons
- HyoJong Jang
- DNp01 (giant fiber), DNp03, and DNp06 all respond to looming but how do they respond to contralateral looming?
- DNp01 and DNp06 respond to looming on both sides and the timing is almost exactly the same no matter which side
- this suggests that there is contralateral connection in the brain rather than an ascending signal back up to the brain to talk to the other side
- The speculation is that the fly wants to jump or takeoff as quickly as possible if a predator is coming and then can figure out turning direction once flying
- 190
- Complementary dynamics of two central complex local neuron populations support goal-directed olfactory navigation
- Nicholas Kathman (Nagel Lab)
- studying complex odor plume navigation
- hΔCK has a bump of activity that they think corresponds to goal directed straight walking
- it is only active when the odor turns on, it turns towards the odor then walks straight
- hΔCK spans across all of the columns of the fan shaped body
- FC1 is an interneuron that is active only transiently during a turn toward the odor but cannot predict direction of turn from the activity
- hΔCK has sustained activity probably because of recurrence in the FB
- both FC1 and hΔCK are necessary for the odor tracking behavior
- 206
- Investigating the visual motion processing neurons in Drosophila
- Sanna Koskela (Michael Reiser Lab)
- characterizing LPTs - which receive input from T4/T5 cells and their role in optomotor response
- used flywire to look at the morphology and the NT predictions (but they say the full optic lobe connectome is coming out soon)
- for all the lines they were able to make splits of, they silenced and then presented different visual stims - grating, spin, looming, etc
- no clear definitive result silencing single LPTs being necessary for optomotor response
- this might be because of redundancy or developmental reasonings (silencing with Kir)
- 237
- Lighting up the fly brain-High fidelity all optical interrogation of the drosophila neural circuits
- Nino Mancini (Salil Bidaye lab)
- No poster
- 253
- Dopamine desensitization demotivates repeated behaviors
- Lauren Miner
- 262
- Functional labeling of individualized postsynaptic neurons using optogenetics and trans-Tango (FLIPSOT)
- Lina Ni
- express a presynaptic Gal4 UAS-ligand. the ligand then binds to the post synaptic receptor which releases a QF and expresses a QUAS reporter in the post synaptic cell.
- then you also add in a QUAS>stop>Chr or ACR to then stochastically label some of the post synaptic cells through a hsFLP and titrating different temps to get different amounts of FLP activity
- then you have to stain and image the brain to see which neurons were labeled
- 270
- Taste and courtship song are integrated to drive social interaction in Drosophila males
- Adrian Palacios Munoz (Jan Clemens Lab)
- males start tapping earlier if they hear song
- and require more taps to initiate courtship when listening to song
- other aspects of tapping and courtship initiation also tested
- song suppresses courtship initiation
- playing song promotes male-male courtship
- song may override the taste cues from males
- male - female interactions are linearly integrated (song and taste)
- 286
- Genetic tools to annotate the electrical and chemical synapses of the Drosophila brain
- Thomas Ravenscroft (Gerry Rubin lab)
- EASI-FISH to find transcription profiles of neuropeptides and innexins
- building nanotags for neuropeptides
- everything should be available online
- 290
- Is love blind? Mating probability gates threat perception
- Carolina Rezaval
- testing escape / defensive behaviors in response to a looming threat
- LC16 responds to the threat
- looked for post synaptic targets that would mediate this stopping of courtship and found serotonergic neurons
- LC16 activates the serotonergic neurons which inhibit P1 and indirectly inhibit pip10
- they realized that the longer the male has been courting the less likely he is to stop in response to the threat and wanted to know how this was happening
- found that there is a ramp of activity in TH-C1 neurons during courtship
- this ramp in activity was just driven by abdomen bending, female not required
- I forget the experiment they did to test it but they also found that TH-C1 inhibits LC16