K H Vosteen

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Cochlear implants (CIs) are used to provide sensations of sound to profoundly deaf patients. The performance of the CI is assessed mainly by the subjective reports of patients. The aim of this study was to look for objective cortical responses to the stimulation of the CI. Two postlingually and two prelingually deaf patients were investigated by positron(More)
The present study was designed to investigate the in vivo effect of local application of lymphokine-activated killer (LAK) cells on the growth of tumours implanted under the renal capsule in nude mice, and especially to test whether large granular lymphocytes (LGL), regarded as natural killer (NK) cells, are the main precursor of LAK cells in vivo. Our(More)
A retrospective follow-up examination of 117 cases results in: (1) The crude survival rates for 3 resp. 5 years are 19% resp. 15%. If those patients whose cause of death has not been the tumour, are taken into consideration, the crude survival increases to 44.5 resp. 31%. The unfavourable prognosis depends on the enlarged stage of the carcinomas in the(More)
The pH value and the DC potential in the endolymphatic sac (ES) were measured using H(+)-selective double-barreled electrodes and the intra- and extradural approach, the pH value in the ES fluid (6.65 +/- 0.12, n = 7) was markedly lower than that in the cerebrospinal fluid (7.39 +/- 0.07, n = 7). Acidity in the ES fluid, under normal (nontreated) conditions(More)
The organ of Corti and isolated hair cells from newborn guinea pig were cultured with the Rose chamber method. The hair cells could be maintained for more than 20 days after explantation when the organ of Corti was cultured as a whole, though the isolated hair cells swelled and degenerated within about 13 hours after explantation. By comparison between the(More)