sperm cells may have memory

loneloan · Oct 29, 2022

https://pubmed.ncbi.nlm.nih.gov/12385819/

Spontaneous alternation behavior (SAB) is the universal tendency of animals, including unicellular organisms, to alternate directional choices at consecutive left/right branchings while traversing a maze. (...) The control maze was a simple T-maze (width=depth=20 microm, distance between entrance and free choice T-intersection=600 microm). We recorded individual sperm cells' left/right decisions at the T-intersections in both mazes. Of the 714 spermatozoa entering the control maze, 49.1% turned to the left Of the 588 spermatozoa entering the experimental maze, 58.6% turned left after the initial forced right turn (significant SAB; P=0.041, Wilcoxon). The statistical dependency of a directional decision on a previous one suggests a physiological 'memory' in human spermatozoa.
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(Basil) · Oct 29, 2022

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sperm cells may have memory

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