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BACKGROUND There are no studies of autonomic function comparing Alzheimer's disease (AD), vascular dementia (VAD), dementia with Lewy bodies (DLB) and Parkinson's disease dementia (PDD). AIMS To assess cardiovascular autonomic function in 39 patients with AD, 30 with VAD, 30 with DLB, 40 with PDD and 38 elderly controls by Ewing's battery of autonomic(More)
BACKGROUND It has been postulated that eye movement disorders in chronic progressive external ophthalmoplegia (CPEO) have a neurological as well as a myopathic component to them. AIM To investigate whether there is a supranuclear component to eye movement disorders in CPEO using eye movement recordings. METHODS Saccade and smooth pursuit (SP)(More)
  • A W Davidson
  • 1999
A method of using an Excel spreadsheet is described which allows dose and erythema index values to be entered, a sigmoid curve fitted to the data, and a report generated. Summary statistics may be derived from the fitted curve. Data and statistics may be saved in a simple database. It is suitable for implementation by people who have no previous programming(More)
A retrospective study was conducted to investigate whether the use of low-contrast stimuli in addition to the standard high-contrast stimuli would increase the sensitivity of the pattern-reversal P100 when testing for multiple sclerosis (MS) and optic neuritis (ON). We found that there was a statistically significant increase in the number of abnormal(More)
A case is described of motor neurone disease presenting with an ocular motor disorder characterised by saccadic intrusions, impaired horizontal and vertical saccades, and apraxia of eyelid opening. The occurrence of eye movement abnormalities in motor neurone disease is discussed.
The effect of ion motion and the need for practical positron propagation in a plasma wakefield accelerator (PWFA) have incited interest in hollow plasma channels. These channels are typically assumed to be cylindrically symmetric; however, a different geometry might be easier to achieve. The introduction of an obstruction into the outlet of a high Mach(More)
In plasma based accelerators (LWFA and PWFA), the methods of injecting high quality electron bunches into the accelerating wakefield is of utmost importance for various applications. Understanding how injection occurs in both self and controlled scenarios is therefore important. To simplify this understanding, we start from single particle motion in an(More)