#neocortex

Fabrizio Musacchiopixeltracker@sigmoid.social
2025-09-11

🧠 New study by Johnston, Kirschhock & Nieder (Nature Comm., 2025): Carrion #crows 🐦‍⬛ estimate time intervals 🕠 using abstract magnitude coding in the nidopallium caudolaterale (avian “prefrontal” #cortex). NCL neurons tuned to 1.5 s, 3 s & 6 s wait times predicted intended duration, independent of cues. This demonstrates that sophisticated timing is possible – even without a #neocortex.

🌍 nature.com/articles/s41467-025

#Neuroscience #Cognition #TimePerception

Fig. 3 | NCL single-unit recordings. A–C Responses of three example NCL neurons
selective to target interval of 1500 ms (A), 3000 ms (B), and 6000 ms (C) during the
nal 1200 ms of the wait period (alignment to response onset; as indicated by the
gray shading). Top: dot-raster histograms with each dot representing one action
potential; Bottom: averaged spike density function (activity averaged and
smoothed by a 300 ms Gaussian kernel). Time 0 indicates the crow’s response
onset for each of the three wait intervals. D Lateral schematic of a crow brain with a
coronal section at the posterior end showing the telencephalic NCLd (yellow). arcopallium; N nidopallium. E, F Time entries in the wait period during which
neurons with a preference for the 1500, 3000, or 6000 ms target duration (each
panel) for activity aligned to the cue offset (E) or response onset (F). Each line
represents one neuron showing a signi cant main effect of time in either cue-offset
or response-onset aligned analysis (n = 220). Surface color indicates normalized
ring rate, with 0 corresponding to the minimum and 1 to the maximum ring rate
per neuron across the aligned time window.
MaReMaBlMaReMaBl
2024-08-01

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