What is DCML?
DCML (Data Center Markup Language), based on Extensible Markup Language (XML), is a data format and model for exchanging information that describes a data center environment.
Where is the DCML located?
It originates from mechano-receptors (sensory receptors sensitive to mechanical deformation) located in the body wall and projects to the contralateral cerebral hemisphere via a three neuron projection system. The DCML is comprised of the fasciculus gracilis and fasciculus cuneatus.
How do you test for DCML?
The DCML is examined by testing:
- Vibratory sensation.
- Position sense.
- Discriminative sensation (must have intact DCML plus intact parietal cortex): Tactile direction. 2-point discrimination. Graphesthesia. Stereognosis. Double simultaneous Stimulation.
What diseases affect the dorsal columns?
Pathology
- inflammatory (e.g. multiple sclerosis)
- infective (e.g. tabes dorsalis, HIV-related vacuolar myelopathy)
- ischemia (e.g. posterior spinal artery syndrome)
- mechanical.
- metabolic (e.g. subacute combined degeneration of the cord, copper deficiency myeloneuropathy, ​vitamin E deficiency)
What is DCML pathway?
The dorsal column–medial lemniscus pathway (DCML) (also known as the posterior column-medial lemniscus pathway, PCML) is a sensory pathway of the central nervous system that conveys sensations of fine touch, vibration, two-point discrimination, and proprioception (position) from the skin and joints.
Where does DCML synapse?
The dorsal column medial lemniscal (DCML) pathway, as its name implies, carries signals upward to the medulla of the brain. Then after the signals synapse, they cross to the opposite side of the brain in the medulla and continue upward through the brain stem to the thalamus by way of the medial lemniscus.
What is the Spinothalamic pathway?
The spinothalamic tract is a collection of neurons that carries information to the brain about pain, temperature, itch, and general or light touch sensations. The pathway starts with sensory neurons that synapse in the dorsal horn of the spinal cord.
Is light touch DCML or spinothalamic?
Light Touch Both the spinothalamic and DCML systems serve this sensation so it is not specific for either one. A cotton tip applicator or fine hair brush is used.
What is Graphesthesia testing?
Graphesthesia tests the individual’s ability to use sensory input to identify a number or letter drawn onto his/her hand while visually occluded. Expected findings – The individual is expected to accurately report the drawn letter or number.
What does the DCML pathway do?
What could be a result of an injury to the dorsal column?
Loss of sensation to pressure and touch could be result of an injury to the dorsal column. EXPLANATION: The dorsal column is most important organ to maintain the body stability, sensation and joint actions. Damage to the ‘dorsal column’ may cause loss in sensation or perception and also certain reflex action.
What does the spinothalamic tract do?
Can a spinal cord lesion cause DCML findings?
In the spinal cord, lesions can cause DCML system findings on one side of the body and ST findings on the opposite side. The DCML is examined by testing: Light touch is represented in both the ST and DCML system so it is OK for sensory screening but not specific for either system.
What is the dorsal column medial lemniscus ( DCML ) pathway?
Kim Bengochea, Regis University, Denver The dorsal column-medial lemniscus pathway (DCML) is a sensory pathway of the central nervous system. It conveys sensation of fine touch, vibration, pressure, two-point discrimination and proprioception (position) from the skin and joints.
What are the sensory modalities of the DCML system?
The principle sensory modalities for the ST system are pain and temperature. The principle sensory modalities for DCML system are vibratory, position sense and discriminatory or integrative sensation.
Where are the DCML and St tracts located?
The ST tract is lateral in the cord and lower brainstem while the DCML system is dorsal and medial in the cord and medial in the lower brainstem. It is not until the rostral pons that the 2 tracts are anatomically close to each other.