during occupancy of the bed in another approach the body of the person themselves can be taken as a shielding here it has to be warranted that the person is connected to a well defined potential this can be achieved by connecting the person either by textile electrodes in his nightwear or by using parts of the bed sheet or a pillow as a textile contact in this case again conductive textile fabrics can be used referring now to fig5 through 14 measurement results are shown that give an indication of the effect of the textile fabric structure for shielding purposes to show the effect of the textile fabric structure on the shielding capacity nine different textile fabrics with conductive shielding were used to shield a capacitive sensor used to measure electrocardiograms ecgs and electromyograms emgs and electroencephalograms eegs without galvanic contact to the skin when placing such a sensor with the sensing electrode facing upwards similarly to the sensor 10 integrated into the mattress or bed sheet 1 fig1 a 1 b the sensor 10 detects signals present in the air the shielding capability of a fabric can be observed by looking at the frequency spectrum of the signals detected by the sensor 10 thus in fig5 through 14 a sensor signal power in dbm power measurement relative to 1 milliwatt is given on the ordinate axes over a frequency in hertz on the axes.