dorsal horn


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Noun1.dorsal horn - one of the two roots of a spinal nerve that passes dorsally to the spinal cord and that consists of sensory fibers
afferent, afferent nerve, sensory nerve - a nerve that passes impulses from receptors toward or to the central nervous system
nervus spinalis, spinal nerve - any of the 31 pairs of nerves emerging from each side of the spinal cord (each attached to the cord by two roots: ventral and dorsal)
References in periodicals archive ?
This area is called the dorsal horn, and it contains secondary sensory neurons that don't normally directly connect to sensory roots.
The major sites of Ketamine analgesia have been demonstrated as periaqueductal grey matter, nucleus raphe magnus and spinal cord dorsal horn and pain pathways involving endogenous opiate and 5-HT neurotransmission.
Indeed, many studies have focused on neurons to understand the mechanism of neuropathic pain, which have suggested that neuropathic pain is a reflection of the aberrant excitability of the secondary sensory neurons in dorsal horn evoked by peripheral sensory inputs and anatomical reorganization of pain pathways of the peripheral and central nervous systems.
Peripheral nerve injuries can affect function up to the point of termination in the dorsal horn (Fig.
After the images were captured, the optical density (OD) of GFAP or the number of p-CERB positive neurons in the same areas of the ipsilateral superficial dorsal horn (laminae I and II) was calculated and averaged across the five spinal sections for each rats.
The mean value of JNK-IR was obtained within the spinal dorsal horn laminae I–III from six randomly selected sections from each animal.
Spinal cord dorsal horn nucleus is a critical area in relaying and modulating pain [38.
Both visceral afferents from the gut and somatic nerves have cell bodies in the dorsal root ganglia and enter the dorsal horn of the spinal cord [15].
Intrathecally fentanyl exerts its effect by combining with opioid receptors in the dorsal horn of spinal cord and may have a supraspinal spread and action.
We have recently shown that neonatal hypersensitivity to touch is due to the late maturation of glycinergic inhibitory signalling and that this signalling, in turn, requires nociceptive activity in the dorsal horn at a critical postnatal period.
35) Therefore, we identified gray matter distribution of c-Fos nuclei in the laminae I- II of the superficial dorsal horn and laminae IV-VI of the neck of the dorsal horn.
Nociceptor stimulation triggers action potentials in sensory nerve fibres that transmit impulses to the dorsal horn of the spinal cord.