Fatigue

Accademia dei Lincei activity afflux anaemia animal appear arms asthenopia attention become beginning birds blood body Bologna Borelli brain breath carbonic acid cause cease cells centimetres cerebral changes charadriidae chemical ciliary muscle contracture curve diminishes disappear disease electric current energy ergograph examinations excitability exhaustion experiment eyes fact fatigue feel fibres flexor muscles frog functions give hand heart heat increase intellectual fatigue intensity kilogrammes kilogrammetres labour lecture light Maggiora mechanical mental middle finger minutes modification Mosso muscular contraction myosin nature nerves nervous centres nervous system normal observed organism oxygen pain passed period physiological physiologists pigeons produced Professor Aducco province of Caltanissetta quails raised a weight rapid regard relax remains repose respiration respiratory movements rest rigid seen sensation sleep Steno stimulus substance suffer takes place temperature thought three kilogrammes tion traction Turin whilst writing