deafferentation

Deafferentation in monkeys: Pointing at a target without visual feedback.

Engaged in what he saw at first as pure research, he conducted several kinds of deafferentation experiments.

Somatosensory deafferentation research with monkeys: Implications for rehabilitation medicine.

Hyperpathia is underlying the peripheral or central deafferentation when the afferent inputs are lost.

Monkeys who lost all sensory information from their arms resumed normal behavior after recovering from the deafferentation procedure.

This deafferentation creates interruption of complex circuitry, which can lead to transneuronal structural degeneration.

This is not done in man because it leads to Charcot joints and a deafferentation phantom, two signs the horse may not be able to display.

The second mechanism involves lesions that cause deafferentation of the visual system may lead to cortical release phenomenon, which includes visual hallucination.

The most direct of related disorders, deafferentation occurs when sensory input from the body is reduced or absent, without affecting efferent, or motor, neurons.

Peripheral olfactory deafferentation of the primary olfactory system in rats using ZnSO4 nasal spray with special reference to maternal behavior.

It is effective in treating refractory failed back syndrome, trigeminal and peripheral neuropathy, and deafferentation and somatic pain.

The structure of the brain is thought to change when degeneration and deafferentation occur in postnatal situations, although these phenomena have not been observed in some studies.

He took a job as a research assistant in a neurology lab to gain more understanding of the nervous system, and became involved in deafferentation experiments with monkeys.

Deafferentation is a surgical procedure in which the spinal cord is opened up and the sensory nerves cut so that these impulses do not reach the brain.

Delayed secondary transneuronal degeneration can also occur at a late stage after brain injury because after the period of latency, neuroplastic rearrangement follows deafferentation.

High-affinity uptake occurs via nerve terminals with glutamatergic deafferentation which decrease glutamate uptake in vivo.

In order to best study this type of control, most research focuses on deafferentation studies, often involving cats or monkeys whose sensory nerves have been disconnected from their spinal cords.

This provided them with them hypothesis that olfactory bulb removal results in transneuronal deafferentation as a result of the massive sudden loss of input from the removed brain tissue.

Surgical cutting of a nerve severs the basal laminae, and without these tubes to channel the regrowing fibers to their lost connections, a neuromata may develop, causing deafferentation pain.

With loss of neuronal input (deafferentation) the STT neurons begin to fire spontaneously, a phenomenon designated "deafferentation hypersensitivity."

Therefore, only those cases with tumors in the major hemisphere suffered deafferentation of the contralateral (minor) hemisphere; rendering it nonfunctional, causing appearance of signs on the same side as the tumor.

Topical treatments, such as lidocaine or capsaicin, should be considered as first-line treatment if a patient falls into the "sensitised nociceptor" as opposed to "deafferentation" sub-group of PHN patients.

In general, the choice of neurosurgical procedure is based on location and type of pain (somatic, visceral, deafferentation), the patient's general condition and life expectancy, and the expertise and follow-up available.

Pacheco writes that 12 of the 17 monkeys had had one or both arms deafferented, while according to the Laboratory Primate Newsletter 10 had undergone deafferentation, the seven others acting as the control group.

"Based on these observations," they wrote, "it would appear that fractures, dislocations, lacerations, punctures, contusions, and abrasions with accompanying infection, acute and chronic inflammation, and necrosis are not the inevitable consequences of deafferentation."