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Figure 6;supplement 1. (A) Tau4R-GFP biosensor zebrafish larvae subjected to TBI and treated with the convulsant 4-AP show no brain puncta. 4-AP was added to the TBI larvae 1 day post-traumatic brain injury (dpti) and left for 38 hr as displayed in timeline at top. (A,B) 4-AP significantly reduced (apparently eliminated) the abundance of GFP+ puncta in the brain and spinal cord compared to untreated TBI control (**p<0.009 at 3dpti and ***p<0.0003 at 4dpti) at two different doses. (C) All larvae treated with 4-AP failed to display any GFP+ puncta (# of aggregates is 0), displayed as distribution of larvae binned into the number of GFP+ puncta they exhibited. (D,E) Timing and duration of 4-AP treatments following TBI had no appreciable effect on 4-AP abrogating the TBI-induced Tau aggregates. Symbols and colors for all panels are consistent with the legend at the top right of the Figure.