From New York State Penal Law: 
125.10 Criminally negligent homicide. 
A person is guilty of criminally negligent homicide when, with criminal negligence, he causes the death of another person.

15.05 Culpability; definitions of culpable mental states.
4. "Criminal negligence." A person acts with criminal negligence with respect to a result or to a circumstance described by a statute defining an offense when he fails to perceive a substantial and unjustifiable risk that such result will occur or that such circumstance exists. The risk must be of such nature and degree that the failure to perceive it constitutes a gross deviation from the standard of care that a reasonable person would observe in the situation.69.74.180.19