1. Assessing how the rapid removal of salt and water by haemodialysis alters regional brain activity (by measurement of the brain blood oxygen level-dependent (BOLD) signal using functional MRI) during tasting of soup of differing salt concentrations. 2. Identify differences in the brain response to salt taste pre- and post-haemodialysis between haemodialysis patients who are either able or unable to control between dialysis weight gain
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Change in regional brain BOLD signal during tasting of soup of differing salt concentrations (vs. artificial saliva) pre dialysis session verse post dialysis session
Timeframe: 1 week (maximal time between pre and post dialysis scan)