Louis N Hunter

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The number of pecks delivered by birds to an attractive visual stimulus was measured before and again 6, 26 and 32 h after partial beak amputation. There was a significant reduction in the number of pecks by birds 26 h after amputation but not at 6 h after. This reduction was considered to be a quantitative measure of pain related guarding behaviour. The(More)
BACKGROUND AND PURPOSE Recent studies suggest that pediatric subjects as old as 8-years-of-age may have difficulty with the ISNCSCI examinations. Our aim was to investigate DTI parameters of healthy spinal cord in children with noncervical IS for comparison with children with SCI and to prospectively evaluate reliability measures of DTI and to correlate the(More)
BACKGROUND AND PURPOSE DTI in the brain has been well established, but its application in the spinal cord, especially in pediatrics, poses several challenges. The small cord size has inherent low SNR of the diffusion signal intensity, respiratory and cardiac movements induce artifacts, and EPI sequences used for obtaining diffusion indices cause(More)
1. Neurogenic inflammation has been studied in the anaesthetized adult hen using a variety of different stimuli. 2. Plasma extravasation was produced following antidromic stimulation of the external mandibular ramus of the trigeminal nerve which innervates the skin at the angle of the jaw and the anterior part of the wattle. 3. Stimulation of the wattle by(More)
Electroencephalographic, cardiovascular and behavioural parameters were examined in Gallus gallus var domesticus in response to feather removal. The progressive removal of feathers resulted in marked changes in the bird's behaviour from an alert agitated response following the initial removals to periods of crouching immobility following successive(More)
BACKGROUND/OBJECTIVE Children and adolescents who have sustained a spinal cord injury (SCI) are at risk of developing spine deformities and secondary complications that may affect their quality of life. The Shriners Pediatric Instrument for Neuromuscular Scoliosis (SPINS) is a condition-specific instrument that was developed to measure the health-related(More)
After 19 weeks on a mash diet nine of the 10 birds exhibited from two to 19 oral lesions. The majority of these lesions involved the total erosion of the buccal epidermis giving a total area of exposed dermis of 0.6 to 94.5 mm(2). This was accompanied by a significant reduction in the numbers of heterophils, monocytes and eosinophils. Birds with lesions(More)
The projections of the ankle joint capsule afferents were studied by transganglionic transport of horseradish peroxidase injected directly into the ankle joint. The number and size of the labelled dorsal root ganglion cells were measured from synsacral nerves 2-9. In the dorsal root ganglia, all sizes of sensory neurones were labelled, and the largest(More)
As a measure of pain-related behaviour, beak guarding was investigated by recording the pecking response of adult chickens to a visually attractive stimulus before and after bilateral suction ablation of the caudolateral neostriatum (CLN). Two control groups of birds were used: a sham-operated group and an ablated group, in which the ablation was confined(More)
BACKGROUND The prevalence of neuromuscular scoliosis in children with spinal cord injury (SCI) is high. Published reports suggest that age at time of injury is the most important determinant. No studies have evaluated neurological characteristics using standardized methods to determine if they are strong predictors of scoliosis. OBJECTIVE To test the(More)