According to you, a person lying in comma is living or dead ?
A person lying in comma neither responds to environmental stimuli nor has self-consciousness. He/she is supported by machines to carry out the vital life processes and he/she is brain-dead. Some of these patients never come back to normal life. Such persons can neither be considered as living nor non-living.
Person who lying in coma is living.
Coma: It is a level of unconsciousness where a person does not respond to internal as well as external stimulus. Now that is just the definition. Internal stimulus means basic needs of body like hunger, going to toilet etc. External stimulus refers to things like pain, heat etc.
He is living but his memory will be lost and it can’t be said when the memory will be regained