The mechanisms through which functional restoration or compensation of Unilateral Neglect (UN) and related disorders take place are still unclear; their understanding constitutes a weighty challenge, both for practical and theoretical purposes. Regarding egocentric frames, UN could in principle be related to frames centred on the sagittal midplanes of the patient’s head or trunk, to a retinotopic frame, or to a frame centred on the axis of a limb ready to engage in any action in its workspace. In most severe instances, UN may be noticed merely by observing the patient’s spontaneous behaviour. A particular patient may only read, for example, the last two letters of any word, even if placed on the ipsilesional side of space, while perfectly executing a cancellation task. Other patients may behave in exactly the opposite way. Patients suffering from UN were first shown pairs of horizontally elongated meaningless shapes.