Scrolling with arrow keys

Using simple neurite tracer on a 2018 mac. For some reason my arrow keys no longer scroll through the image stack, and clicking through the scroll bar manually yields images that are too far apart to be accurate. Does anyone know how to set that up?

@CJCmcbucb, Navigation with arrow keys works only if no ROI is active (otherwise they will move the ROI), perhaps that is the issue? The <> keys should work at all times. Either-way, please check the state of the “Reverse CZT order of ‘>’ and ‘<’” preference in ImageJ’s Edit → Options → Misc… That will set which dimension slider will be moved by the key strokes.