On June 18, Esmin Green, 49, was involuntarily admitted to the psychiatric emergency department of Kings County Hospital Center on June 18 for what the hospital describes as "agitation and psychosis."

Upon her admission, Green waited nearly 24 hours for treatment, said the New York Civil Liberties Union, which on Tuesday released surveillance camera video of the incident.

The surveillance camera video shows the woman rolling off a waiting room chair, landing face-down on the floor and convulsing. Her collapse came at 5:32 a.m. June 19, the NYCLU said, and she stopped moving at 6:07 a.m. During that time, the organization said, workers at the hospital ignored her.

At 6:35 a.m., the tape shows a hospital employee approaching and nudging Green with her foot, the group said. Help was summoned three minutes later.

In addition, the organization said, hospital staff falsified Green's records to cover up the time she had lain there without assistance.