1. The bidirectional interaction between ventral tegmental rewarding and hindbrain aversive stimulation in the rat;Anderson;Brain Res,1995
2. Periaqueductal gray;Beitz,1995
3. Peripheral and spinal mechanisms of nociception;Besson;Physiol Rev,1987
4. Analgesia produced by stimulation of the periaqueductal gray matter: true antinociceptive effects versus stress effects;Besson,1991
5. Dissociation of the substrates for medial forebrain bundle self-stimulation and stimulation-escape using two-electrode stimulation technique;Bielajew;Physiol Behav,1980