In a manner relating to catalepsy, a condition where muscles become rigid and the body stays in whatever position it's placed.
From cataleptic (adjective) + -ally (adverb suffix). Cataleptic comes from Greek katalepsis meaning 'seizure' or 'taking hold of,' from katalambanein 'to seize.' The medical condition was named for how the body seems 'seized' in rigid positions.
Catalepsy fascinates neuroscientists because it appears in various conditions—from catatonia to certain seizure disorders—and historically, people with catalepsy were sometimes mistakenly thought to be dead, leading to stories about premature burials.
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