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Published 20 hours ago • verified publisher icon cortex-lab

Mouse baseline weight error

Open laurax452 opened this issue 6 years ago • 2 comments

Usually the baseline weight for a mouse increases over time. However I have found a small decrease in the case of 1 mouse LEW013 that appears to be something to do with the Z score (2 pictures attached). This appears both in the MC Alyx panel gui and in Alyx. Please can someone check that the baseline weights are being calculated properly. Thanks

img_20190201_110006 img_20190201_110400

laurax452 avatar Feb 04 '19 15:02 laurax452

It seems correct, the zscore weight is not necessarily increasing. The formula is (srw_date * zscore) + mrw_date + iw where srw_date and mrw_date are increasing, iw is fixed, and zscore is fixed but negative. So there is no guarantee that this mathematical expression is always increasing with age.

rossant avatar Feb 04 '19 16:02 rossant

This doesn't make sense to me. Why would a mouse get smaller with age? If the formula cannot guarantee that a mouse gets bigger with age then it seems to me the formula is the wrong one to be using

lewool avatar Feb 05 '19 15:02 lewool