The Mental Clock Test and its asymmetry

The Mental Clock Test is a standardised procedure to test for hemineglect in visual imagery. Patients with representational neglect show longer reaction times (RT) and higher error rates (ER) in the left (LHF) than in the right imagined hemifield (RHF). In a recent study we found that also healthy subjects show a similar pattern of RT and ER. The aim of the present study was to further investigate this imagery dependent hemifield asymmetry of the Mental Clock Test by comparing two different types of stimulus presentation in both normals and patients with neglect. Subjects listened to spoken clock times and then…