Grant A. McCallum

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Six elderly psychiatric and 17 mentally handicapped individuals suffering from severe constipation received 3 week periods of treatment with 10 g unrefined bran, three bran biscuits, and Senokot syrup daily or three times weekly. There was no significant difference in the number of bowel movements or enemas or in the consistency of the motions. The results(More)
One hundred and twelve patients scheduled for day case varicose vein surgery were randomly allocated to one of three groups: total intravenous anaesthesia with propofol, propofol induction followed by inhalational anaesthesia with nitrous oxide and isoflurane or thiopentone induction followed by inhalational anaesthesia with nitrous oxide and isoflurane.(More)
A population-based survival study was done for all cases of the acquired immune deficiency syndrome diagnosed in the city of San Francisco through May 1983. Follow-up was obtained for 165 of 173 diagnosed cases. Median survival among 75 patients presenting with Kaposi's sarcoma (KS) alone was 21 months. Median survival among 90 patients presenting with(More)
OBJECTIVE Peripheral nerves carry neural signals that could be used to control hybrid bionic systems. Cuff electrodes provide a robust and stable interface but the recorded signal amplitude is small (<3 μVrms 700 Hz-7 kHz), thereby requiring a baseline noise of less than 1 μVrms for a useful signal-to-noise ratio (SNR). Flat interface nerve electrode (FINE)(More)
Many attempts have been made to manufacture multi-contact nerve cuff electrodes that are safe, robust and reliable for long term neuroprosthetic applications. This protocol describes a fabrication technique of a modified cylindrical nerve cuff electrode to meet these criteria. Minimum computer-aided design and manufacturing (CAD and CAM) skills are(More)
This work presents a novel 4-sided, 16-channel deep brain stimulation electrode with a custom flexible high-density lead for connectivity with pulse generation electronics. The 3-dimensional electrode enables steering the current field circumferentially. The electrode is fabricated in pieces by micromachining and microfabrication techniques; the pieces are(More)
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