The magnetoencephalographic response to upright and inverted face stimuli in a patient with Williams syndrome

The processing of faces in a patient with Williams syndrome was investigated using magnetoencephalography by evaluating responses to upright and inverted face stimuli. His processing of upright faces was not different from that of healthy adults. However, the processing of inverted faces was faster than those of healthy adults and faster than his processing of upright faces. The result indicated the absence of face inversion effect usually observed in healthy adults.