|Kasamatsu & Hirai – Monk Serotonin Study (Serotonin)
||Investigate how sensory deprivation affects the brain.
- Studied a group of Monks on a 72 hour pilgrimage to a mountain.
- The Monks were not allowed to speak, eat or drink.
- They were exposed to cold late autumn weather.
- After 48 hours, the Monks started seeing hallucinations of ancestors and feeling their presence.
- Researchers took blood samples before and after their pilgrimage.
- The found increased level of serotonin in the Monks’ brain.
- Especially in the Hypothalamus and Frontal Cortex.
- Resulting in hallucination.
- Sensory deprivation triggered the release of Serotonin.
- Serotonin – responsible for Sleep, Arousal level, and Emotions.