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Biomedical subjects

John Buckley

Publications and source records attributed to John Buckley.

4 recordsLinked to original sources
PubMed2006

Gorham disease: an intraoperative case study.

Gorham disease is a rare chronic disorder that is characterized by the abnormal proliferation of thin-walled capillaries and small lymphatic vessels that results in the massive osteolysis of adjacent bone. Clinical manifestations are determined by the area of involvement, which may include the chest and ribs. The case presented involves a 47-year-old man with Gorham disease complicated by unilateral chylothorax who was treated with thoracic duct ligation. The anesthetic implications associated with Gorham disease are discussed, and nonsurgical primary and adjunctive treatments for chylothorax are summarized.

Anesthesia, Inhalation↗
PubMed2004

The Temporal Automated System for Taste Experiments (TASTE).

We describe a new, open flow device for presenting taste stimuli to human subjects under controlled conditions of timing. The device delivers each stimulus as a mist to the participant's tongue through one of 16 nozzles attached to a linear slide. Software controls the position of the slide, the duration of the stimulus, and the duration of the pre- and poststimulus water rinses and records the responses of the participant. Temporal characteristics of this system make it especially applicable to studies on the role of attention in taste perception.

Attention↗
PubMed2002

The effect of refractive blur on postural stability.

The effect of refractive blur upon postural stability was investigated under three conditions: normal standing, standing with input from the somatosensory system disrupted and standing with input from the somatosensory and vestibular systems disrupted. Standing stability was assessed using the centre of pressure (COP) signal from force plate data in four young subjects (mean 23.9+/-3.1 years) and five repeated sets of measurements were taken. The subjects looked straight ahead at a horizontal and vertical square wave pattern of 2.5 cycles (degree)(-1). Under each of the three test conditions, standing stability was measured with the optimal refractive correction and under binocular blur levels of 0, + 1, + 2, + 4, and + 8 D and with eyes closed. In the normal standing condition, dioptric blur had only a mild effect on postural stability. However refractive blur produced large increases in postural instability when input from one or both of the other two sensory systems were disrupted. We hypothesized that dioptric blur would have an even great effect on postural stability if the visual target used was of higher spatial frequency. This was confirmed by repeated measurements on one subject using a target of 8 cycles (degree)(-1). The study highlights the possible importance of an optimal correction to postural stability, particular in situations (or people) where input from the somatosensory and/or vestibular systems are disrupted, and where the visual surrounds are of high spatial frequency.

Adult↗