Figure 1. Example of the Apples cancellation task (A) used to simultaneously test for allocentric and egocentric symptoms.

In this test patients are asked to cross out all the full apples. Egocentric neglect is measured by whether patients miss targets (full apples) predominantly on one side of the page and allocentric neglect is measured by whether patients make false positive responses by cancelling predominantly left or right distracters (according to the position of the gap defining a distracter; for full details and scoring see the Methods section). (B) and (C) present scatterplots of egocentric neglect errors against allocentric neglect errors at the sub-acute (B) and chronic (C) phases following stroke. There was significant correlation between allocentric and egocentric neglect scores at either phase. Please note that the middle grey dot corresponds to results for non-impaired patients. (D) Behavioural results – the number of patients with egocentric and allocentric neglect symptoms at the sub-acute and chronic phase following stroke.