Mean block correlations exceed first-pair correlations in four selected Allen slice groups

We compared three released response-correlation summaries within 1,755 detected chemical connections in Allen Synaptic Physiology r2.1 small. The donor-weighted mean Fisher difference between the four-response block and first-pair fields was positive in four mouse or human excitatory or inhibitory groups. Mean differences ranged from 0.07532 to 0.28824; all nominal 98.75 percent donor bootstrap intervals were above zero. The result has a trial-count limit. With at least 20 inferred trials per field, human inhibition had nine connections from five donors, a negative mean difference and an interval that included zero. With at least 30 trials, every remaining group interval included zero. A fixed-dynamics Gaussian example gave a negative pulse-pair correlation and a positive block correlation. Different aggregation operators, trial subsets, uncertain pulse-build history, response-fit error and inferred donor identities prevent a mechanism or in vivo coding claim. Original code, aggregate evidence, a figure, exact source hashes and external retrieval steps support reproduction. External records are not bundled.

Allen Institute · synaptic dynamics · response correlation · aggregation · trial count · structure and function