A physiological effect device comprising an elongate flexible member, band or strip having a magnetically inductive core around which is coiled at least one insulated electrically conductive wire. The conductive wire can act as a solenoid and utilise the small electrical pulses normally sent around or through a subject (such as an animal) wearing the device and thereby induce a (therapeutic) magnetic field in the core. The device may provide a useful induced magnetic field for physiological effects even when at rest and/or may absorb electrical pulses (such as those associated with pain in an animal). The device may further be arranged to absorb or screen radiation (such as microwaves or the like).
