Mirror test is used to
Cessation of respiration : this should be complete and continuous. Complete stoppage of respiration for more than 5 minutes usually causes death. Respiration may stop for very sho period without causing death. Feather test, mirror test and Winslow's test have only historical impoance. Ref: Dr. NARAYANAN REDDYS TEXTBOOK OF FORENSIC MEDICINE PAGE 144
Death and postmortem changes
Assessment of cessation of respiration
Assessment for tremors
Assessment for hea function
Assessment for brain function
Assessment of cessation of respiration