| What was siffre's aim? | Investigae the effects of living withouth the influence of exogenous zietgebers (light), on his sleep-wake cycle. |
| How long was he in the cave for, dates? | 6 months, 14th feb and 5th of sep |
| How much water did he have? | 780 gallons of water |
| What did he do to keep track of his thoughts ? | Kept a diary, called a team above ground to say when he was feeling sleepy.
Lamps in cave |
| What tests did Siffre do on himself? | Recording blood pressure, memory tests and psycical tasts like beads and strings and shooting a rifle |
| What did this experiment do to his memory and mood? | Low good and depression bc no compaionship. Short term memory and eyesight got worse |
| What happened to his sleep-wake cycle? | Slightly longer, 18 to 51 hours.
Once 48 hours, 36 hours awake ad 12 hours asleep |
| What happened to his body clock? | Became free-running, not following a set pattern. |
| Conclusion from Siffre? | Endogenous pacemaker still worked but the absenese of exogenous zietgebrs made it not a nomale circaidam rhythm. Don't understand time without external cues.
Also negativ impact on metnal helth for soical isolation |
| Weakness of Siffre? | Unique resutls for Siffe, not repersentative to wider population. Gender bias bc we was a man, could be different for women |
| Weakness of Siffre? | Hard to replicate, ethical issues invloved with the study. Can't check for similar results |
| STrength of Siffre | Eliminates other variables of Zeitgabers on his sleep wake cycle. Can see the full effect |
| Weakness of Siffre? | No one is really going to sleep in a cave, cant be applied to real life |
| Debate of Siffre? | Holistic, quantative measurements, blood pressure and qualative date of diary of emotions and mental state. |
