Daniel Pollak

Daniel Pollak

@danielpollak.bsky.social

Neuroscience PhD at Caltech studying natural behavior danpollak.com

87 followers139 following22 posts

I never feel like I have something about science I'm comfortable posting. But I just realized I have too many gardening thoughts to just keep to myself. So... Why do I never see grapevines in urban LA landscapes?

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I'm hoping this trellis will give my doorway shade once buds break in mid-late March (fingers crossed), not to mention delicious leaves and grapes. Stay tuned. In the meantime, Los Angeles, not to be an ahole but what is going on?

Update: the vine has grown and is now providing shade to my front door. Also pictured: milkweed for monarch butterflies (bottom left), my fig tree (left), my curry tree (middle left), and assorted succulents (bottom right)

I never feel like I have something about science I'm comfortable posting. But I just realized I have too many gardening thoughts to just keep to myself. So... Why do I never see grapevines in urban LA landscapes?

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"But Daniel how do I even get a grapevine?" Do what I did. Steal a branch from an existing grapevine. In general, we should all steal more plants. (Thanks Caltech community garden!)

Espaliering this vine has been an exercise in utter ignorance. And guess what? It's come back each Spring. So there's no technical or knowledge barrier keeping you from free food, shade, and aesthetics. See the current state of my vine: I cut it down to the nubs. I have no idea what I'm doing.

I never feel like I have something about science I'm comfortable posting. But I just realized I have too many gardening thoughts to just keep to myself. So... Why do I never see grapevines in urban LA landscapes?

There are tons of trellis structures all over the place in residential buildings! These unadorned, trellised spaces are unfit for humans when it's hot. Why no grapes? Do people not know that grapes are wildly heat resistant? My vine has essentially ignored heatwave after heatwave.

#SfN25 's hottest club is Poster X8 Tuesday Morning. This club has everything: mice hunting robotic bait, quantitative behavior modeling, chronic superior colliculus Neuropixel data, and GLM encoding/decoding, not to mention the cheap new DAQ EVERYONE's been rumbling about. See you there!

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5/ Key insights: • Behavioral context (self- vs. external song) → no change in neural encoding • Social context (alone vs. with conspecifics) → marked modulation in response strength & selectivity Plus, we observed stimulus-specific local field potential correlates in NCM.

6/ Takeaway: NCM isn’t sensitive to whether it’s the bird singing or hearing itself—but it is sensitive to the presence of other birds. Suggests a specialized auditory representation tuned to social environment.

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3/ We compared two contexts: • Behavioral – hearing own song vs. actively singing it • Social – listening while alone vs. in the presence of others We found that NCM responses remained consistent across behavioral contexts but were changed social listening situations.

2/ Why zebra finches? They’re highly vocal and social—perfect for studying how neural responses in the auditory cortex (aka caudomedial nidopallium, or NCM) change with behavioral and social context.

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