Discussion of Recent Deterrence Studies. The Criminal Justice Legal Foundation has collected many recent deterrence studies, including ones by Hashem Dezhbakhsh, Paul H. Rubin, Joanna M. Shepherd, H. Naci Mocan & R. Kaj Gittings and others claiming a deterrent effect to the death penalty. These studies may be found here.
Spinal headaches are caused by leakage of spinal fluid through a puncture hole in the tough membrane (dura mater) that surrounds the spinal cord. This leakage decreases the pressure exerted by the spinal fluid on the brain and spinal cord, which leads to a headache. Spinal headaches typically appear within 48 hours after a spinal tap or spinal anesthesia.
Tension headaches are the most common headache type, representing approximately 60% of all headaches. These headaches are caused by the sustained contraction of the muscles in the neck and head region. The sustained muscle contraction is usually a result of a combination of the following: 1  cervical/neck misalignments and faulty neck biomechanics. 2  previous neck/upper back injury- not properly rehabilitated. 3  poor posture. 4  excessive emotional stress. 5  anxiety or depression. 6  prolonged sitting or driving. 7  improper sleeping habits.