Many psychological and environmental factors are known to influence responsiveness to
noxious sensory stimuli. Until recently, the physiological mechanisms which enable such …

It has been shown that stimulation-produced-analgesia (SPA) in the cat elicited from the
periaqueductal gray matter (PAG) is obtained from sites located in the ventral part …

This study consists of a detailed analysis of the analgesic effects induced by stimulation of
the various parts of the periaqueductal gray matter (PAG) in the freely moving rat. In order to …

1. To obtain a comprehensive map of the ascending projection of the midbrain
periaqueductal gray, small amounts of [3H] leucine were injected into discrete regions of the …

Over two decades ago it was discovered that electrical stimulation of the periaqueductal
gray (PAG) caused profound analgesia (Reynolds, 1969). It was subsequently found that …

Pentobarbital-anesthetized rats were subjected to 21 min of continuous electrical stimulation
of the caudal periaqueductal gray matter (PAG) at the current threshold for analgesia …

The major functions of the midbrain periaqueductal gray (PAG), including pain and
analgesia, fear and anxiety, vocalization, lordosis and cardiovascular control are considered …

Since Reynold's initial report years ago (1969) revealed that during and after periaqueductal
gray matter (PAG) stimulation rats could support severe, painful interventions such as …

This book constitutes the proceedings of a NATO Advanced Research Workshop held at
Chateau de Bonas (France) from 10-15 July 1990 on the Midbrain Periaqueductal Gray …

Afferent projections to the periaqueductal gray matter in the rat have been studied by use of
the retrograde axonal transport of horseradish peroxidase. Iontophoretic injections of …