Final answer:
In the late 1800s, the term for a temporary loss of cognitive or motor function after emotionally upsetting experiences was 'hysteria'.
Step-by-step explanation:
In the late 1800s, a temporary loss of cognitive or motor function, usually as a result of emotionally upsetting experiences, was termed hysteria.
This condition was associated with physical symptoms of panic, pain, and paralysis in the absence of detectable physical reasons. Sigmund Freud's work with 'hysterical' patients contributed to the understanding of hysteria as a manifestation physical symptoms resulting from psychological trauma.