We are looking for a PhD student with a strong interest in human movement sciences and motor learning. How is sensorimotor adaptation acquired and forgotten? Scientific background: Human movement control is highly efficient at minimizing sensorimotor errors and is forced to adjust its strategies to slow changes of a large variety of factors. The motor system is subject to growth, aging, or muscle weakness; the external mechanical environment may change its resistance against the movement; and the sensory system, providing the most important information to estimate the actual and desired state of the ensemble of body and environment, is also subject to systematic changes. Sensorimotor adaptation is often defined as the gradual change of the generated motor commands in response to such systematic changes, but it has been recently recognized that sensorimotor adaptation does not only involve the acquisition of gradual changes in stimulus-response mechanisms, but also different types of meta-learning reflected in 1) gradual changes in the processing of sensorimotor errors driving the adaptation (error sensitivity) and in 2) adjustments of the stability (retention) of the acquired adaptive change. Current project and methods: The current project will investigate dynamics of error sensitivity and retention across repeated sequences of sensorimotor adaptation and deadaptation. Of special interest is the dependence of error sensitivity and retention on error size and consistency. Adaptation experiments will be performed in reaching movements under distorted visual feedback of the hand and in saccadic eye movements to targets displaced during the movement. The data acquisition and analysis is centered on movement trajectories recorded in humans. Candidates should have a strong interest in motor control and learning mechanisms. Skills in mathematical analysis of dynamic systems and computer programming are desirable. The project involves cooperation with laboratories in Toronto (CA) and Seattle (USA). Contact: Dr. Ing. Thomas Eggert e-mail: eggert at lrz.uni-muenchen.de Department of Neurology, Ludwig-Maximilians University Munich, Germany Literature: Straube, A., Deubel, H., Ditterich, J., & Eggert, T. (2001). Cerebellar lesions impair rapid saccade amplitude adaptation. Neurology, 57 (11), 2105-2108. Krüger M, Borbely B, Eggert T, Straube A (2012) Synergistic control of joint angle variability: influence of target shape. Hum Mov Sci 31:1071-1089 doi: 10.1016/j.humov.2011.12.002 Borbély BJ, Straube A, Eggert T (2014) Motor synergies during manual tracking differ between familiar and unfamiliar trajectories. Experimental Brain Research 232:889-901 Henriques, D.Y., Filippopulos, F., Straube, A., & Eggert, T. (2014). The cerebellum is not necessary for visually driven recalibration of hand proprioception. Neuropsychologia, 64C, 195-204.