Catalogued

Double-plotted actogram

Made by

Chronobiology labs (e.g. Pittendrigh)

Year

1950s-1960s

Field

Biology and ecology

Kind

Data display

Room

Change over time — Placed by reading its description, not yet studied

8 other forms share this skeleton

Source

Chronobiology texts

Attribution less certain: contested, or no single inventor recorded

Searches, not citations

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