| Jackson's law | Loss of mental functions due to disease retraces in reverse order its evolutionary development. (05 Mar 2000) |
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| Jackson's membrane | A thin vascular membrane or veil-like adhesion, covering the anterior surface of the ascending colon from the caecum to the right flexure; it may cause obstruction by kinking of the bowel. Synonym: Jackson's veil. (05 Mar 2000) |
| Jackson's rule | After an epileptic attack, simple and quasiautomatic functions are less affected and more rapidly recovered than the more complex ones. (05 Mar 2000) |
| Jackson's sign | <clinical sign> During quiet respiration the movement of the paralysed side of the chest may be greater than that of the opposite side, while in forced respiration the paralysed side moves less than the other. Origin: J. H. Jackson (05 Mar 2000) |
| Jackson's veil | A thin vascular membrane or veil-like adhesion, covering the anterior surface of the ascending colon from the caecum to the right flexure; it may cause obstruction by kinking of the bowel. Synonym: Jackson's veil. (05 Mar 2000) |
| Jackson, Jabez | <person> U.S. Surgeon, 1868-1935. See: Jackson's membrane, Jackson's veil. (05 Mar 2000) |
| Jackson, John Hughlings | <person> English neurologist, 1835-1911. See: jacksonian epilepsy, Jackson's law, Jackson's rule, Jackson's sign. (05 Mar 2000) |
| jacksonian | Described by John Hughlings Jackson. See: jacksonian epilepsy, Jacksonian seizure. (05 Mar 2000) |
| jacksonian epilepsy | A brief temporary alteration in movement, sensation or autonomic nerve function caused by abnormal electrical activity in a localised area of the brain. Focal seizures (i.e. Partial or Jacksonian seizures) usually cause no change in awareness or alertness. An example of a focal (partial) seizure would be rhythmic muscle contractions in one area of the body: lip smacking, mouth movements, drooling, head turning, eye movements or seemingly purposeful movements (for example picking at clothes). Other presentations may be strictly sensory with abnormal numbness, tingling or a crawling sensation to the skin. More unusual symptoms include changes in speech, thought, personality, mood, sensation of deja vu or hallucinations. (27 Sep 1997) |
| Jacksonian seizure | A brief temporary alteration in movement, sensation or autonomic nerve function caused by abnormal electrical activity in a localised area of the brain. Focal seizures (i.e. Partial or Jacksonian seizures) usually cause no change in awareness or alertness. An example of a focal (partial) seizure would be rhythmic muscle contractions in one area of the body: lip smacking, mouth movements, drooling, head turning, eye movements or seemingly purposeful movements (for example picking at clothes). Other presentations may be strictly sensory with abnormal numbness, tingling or a crawling sensation to the skin. More unusual symptoms include changes in speech, thought, personality, mood, sensation of deja vu or hallucinations. (27 Sep 1997) |
| Chevalier-Jackson dilator | An oesophageal dilator that passes through a rigid endoscope. (05 Mar 2000) |
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