A device, configured to be insertable into a rectum of a human body, comprising: an electrode arrangement (8a-8d) configured to apply electrical stimulation signals to the wall of the rectum; at least one sensor (11, 12, 13) configured to detect one or more conditions within said human body that indicate a requirement for stimulation; and means for applying an electrical signal to said electrode arrangement (8a-8d); a first formation configured to limit the insertion of the device into the rectum; and a second formation configured to retain the plurality of electrodes (8a, 8b, 8c) in the rectum; characterised by: the device being a wearable neuromodulation device; the means for applying an electrical signal being configured to apply to the signal to said electrode arrangement (8a-8d) selectively, in response to a determination that said stimulation is required based on a detection of said one or more conditions; the first and second formations (2, 3) being configured to situate the plurality of electrodes (8a-8d) apposed to pudendal nerves of the human body when the device is inserted into the rectum; the electrode arrangement comprising a plurality of electrodes (8a-8d) configured to focus the electrical stimulation signals to the pudendal nerves through the wall of the rectum; and wherein a first one of said plurality of electrodes (8a-8d) has a larger surface area than at least a second one of said plurality of electrodes (8a-8d), said first and second ones (8a, 8b) of said plurality of electrodes (8a-8d) being of opposite charge. an electrode arrangement (8a-8d) configured to apply electrical stimulation signals to the wall of the rectum; at least one sensor (11, 12, 13) configured to detect one or more conditions within said human body that indicate a requirement for stimulation; and means for applying an electrical signal to said electrode arrangement (8a-8d); a first formation configured to limit the insertion of the device into the rectum; and a second formation configured to retain the plurality of electrodes (8a, 8b, 8c) in the rectum; characterised by: the device being a wearable neuromodulation device; the means for applying an electrical signal being configured to apply to the signal to said electrode arrangement (8a-8d) selectively, in response to a determination that said stimulation is required based on a detection of said one or more conditions; the first and second formations (2, 3) being configured to situate the plurality of electrodes (8a-8d) apposed to pudendal nerves of the human body when the device is inserted into the rectum; the electrode arrangement comprising a plurality of electrodes (8a-8d) configured to focus the electrical stimulation signals to the pudendal nerves through the wall of the rectum; and wherein a first one of said plurality of electrodes (8a-8d) has a larger surface area than at least a second one of said plurality of electrodes (8a-8d), said first and second ones (8a, 8b) of said plurality of electrodes (8a-8d) being of opposite charge. the device being a wearable neuromodulation device; the means for applying an electrical signal being configured to apply to the signal to said electrode arrangement (8a-8d) selectively, in response to a determination that said stimulation is required based on a detection of said one or more conditions; the first and second formations (2, 3) being configured to situate the plurality of electrodes (8a-8d) apposed to pudendal nerves of the human body when the device is inserted into the rectum; the electrode arrangement comprising a plurality of electrodes (8a-8d) configured to focus the electrical stimulation signals to the pudendal nerves through the wall of the rectum; and wherein a first one of said plurality of electrodes (8a-8d) has a larger surface area than at least a second one of said plurality of electrodes (8a-8d), said first and second ones (8a, 8b) of said plurality of electrodes (8a-8d) being of opposite charge.