At 30 Hz, linear sums with equal input activation gave no clear mean lateral range change in 60 mouse V1 maps

We tested whether paired responses at 30 Hz change the lateral range of mapped excitation. We used released recordings from developing mouse primary visual cortex (V1). The sample had 1,215 connections in 60 target maps from 38 recording dates. For each pulse, we calculated mean lateral source distance with response amplitudes as weights. The mean change was -0.72 micrometres. The central 95% range from date resampling was -2.65 to +1.02 micrometres. The mean first-response range was 55.67 micrometres. Amplitude thresholds, source-layer controls, and two spatial windows gave no clear mean shift. Individual map changes ranged from -28.36 to +16.45 micrometres. All retained locations matched the source spatial spreadsheets. Those sheets had voltage labels but numeric amplitudes that matched millivolts. The package preserves the source data, code, audit, results, figures, and repeat instructions. The sums assume equal input activation and linear addition. They do not measure simultaneous activation or natural input activity. The result concerns the sampled mean. It does not establish unchanged range in every map or in adult cortex.

short-term plasticity · spatial integration · mouse visual cortex · optogenetic mapping · structure and function · reproducible analysis