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1 Jan 1850 Jahr - Sleep Substance

Beschreibung:

It was believed that sleep was caused by a kind of “sleep substance” or toxin that built up during the day and dissipated at night, or that sleep was regulated by blood flow, or that it was caused when nerve cells became paralyzed at night and unable to communicate with each other.

Zugefügt zum Band der Zeit:

Sleep Medicine

ByPardeep Masuta
8 Nov 2017
0
0
445

Datum:

1 Jan 1850 Jahr
Jetzt
~ 175 years ago
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