Winand H. Dittrich

Learn More
Research on emotion recognition has been dominated by studies of photographs of facial expressions. A full understanding of emotion perception and its neural substrate will require investigations that employ dynamic displays and means of expression other than the face. Our aims were: (i) to develop a set of dynamic and static whole-body expressions of basic(More)
Johansson filmed walkers and runners in a dark room with lights attached to their main joints and demonstrated that such moving light spots were perceived as human movements. To extend this finding the detection and recognition of Johansson displays of different kinds of movements under three light-spot conditions were studied to determine how human actions(More)
It is well known that biological motion, as produced by point-light displays on a human body, gives a good representation of the represented body-eg its gender and the nature of the task which it is engaged in. The question is whether it is possible to judge the emotional state of a human body from motion information alone. An ability to make this kind of(More)
The importance of kinematics in emotion perception from body movement has been widely demonstrated. Evidence also suggests that the perception of biological motion relies to some extent on information about spatial and spatiotemporal form, yet the contribution of such form-related cues to emotion perception remains unclear. This study reports, for the first(More)
Mechanisms of spatial working memory and eye movement control were investigated in eight mild to moderate Parkinson's disease patients (PDs). Subjects were presented with a sequence of four targets which had to be memorized and then recalled by moving their eyes to fixate the four locations in the correct order. Two variations on this procedure were used in(More)
Three groups of pigeons were trained with a modified discriminative autoshaping procedure to discriminate video images of other pigeons on the basis of movement. Birds of all groups were shown the same video images of other pigeons, which were either moving or still. The group to whom food was presented only after moving images learned the discrimination(More)
Almost from the inception of psychological enquiry into reaction time (RT), a broad distinction has been drawn between two types of process-serving performance in RT tasks, namely, the on-line processes initiated by the arrival of the imperative signal and preparatory processes, which precede the imperative signal and may contribute to performance(More)
Neural mechanisms underlying recognition of objects must overcome the changes in an object's appearance caused by inconsistent viewing conditions, particularly those that occur with changes in lighting. In humans, lesions to the posterior visual association cortex can impair the ability to recognize objects and faces across different lighting conditions.(More)