TY  - JOUR
A1  - Scheffczyk, Christian
A1  - Engbert, Ralf
A1  - Krampe, Ralf-Thomas
A1  - Kurths, Jürgen
A1  - Rosenblum, Michael
A1  - Zaikin, Alexei A.
T1  - Nonlinear Modelling of Polyrhythmic Hand Movements
Y1  - 1996
ER  - 
TY  - JOUR
A1  - Krampe, Ralf-Thomas
A1  - Ericsson, Anders K.
T1  - Deliberate practice and elite musical performance
Y1  - 1995
ER  - 
TY  - JOUR
A1  - Krampe, Ralf-Thomas
A1  - Schwarz, Udo
A1  - Witt, Annette
T1  - Measures of complexity in signal analysis
Y1  - 1996
UR  - http://agnld.uni-potsdam.de/~shw/Paper/m.ps.gz
ER  - 
TY  - JOUR
A1  - Krampe, Ralf-Thomas
A1  - Ericsson, Anders K.
T1  - Mainting excellence : deliberate practice and elite performance in young and old pianists
Y1  - 1996
ER  - 
TY  - JOUR
A1  - Krampe, Ralf-Thomas
A1  - Mayr, Ulrich
A1  - Charness, N.
T1  - The role of practice and coaching in entrepreneurial skill domains : an international comparison of life-span chess skill acquisition
Y1  - 1996
ER  - 
TY  - JOUR
A1  - Zaikin, Alexei A.
A1  - Rosenblum, Michael
A1  - Scheffczyk, Christian
A1  - Engbert, Ralf
A1  - Krampe, Ralf-Thomas
A1  - Kurths, Jürgen
T1  - Modeling qualitative changes in bimanual movements
Y1  - 1997
ER  - 
TY  - BOOK
A1  - Krampe, Ralf-Thomas
T1  - Maintaining excellence : cognitive-motor performance in pianists differing in age and skill level
Y1  - 1994
PB  - Ed. Sigma
CY  - Berlin
ER  - 
TY  - INPR
A1  - Engbert, Ralf
A1  - Scheffczyk, Christian
A1  - Krampe, Ralf-Thomas
A1  - Rosenblum, Mikhael
A1  - Kurths, Jürgen
A1  - Kliegl, Reinhold
T1  - Tempo-induced transitions in polyrhythmic hand movements
N2  - We investigate the cognitive control in polyrhythmic hand movements as a model paradigm for bimanual coordination. Using a symbolic coding of the recorded time series, we demonstrate the existence of qualitative transitions induced by experimental manipulation of the tempo. A nonlinear model with delayed feedback control is proposed, which accounts for these dynamical transitions in terms of bifurcations resulting from variation of the external control parameter. Furthermore, it is shown that transitions can also be observed due to fluctuations in the timing control level. We conclude that the complexity of coordinated bimanual movements results from interactions between nonlinear control mechanisms with delayed feedback and stochastic timing components.
T3  - NLD Preprints - 41 
Y1  - 1997
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-14380
ER  - 
TY  - JOUR
A1  - Scheffczyk, Christian
A1  - Engbert, Ralf
A1  - Kurths, Jürgen
A1  - Krampe, Ralf-Thomas
A1  - Kliegl, Reinhold
T1  - Nonlinear Phenomena in Polyrhythmic Hand Movements
N2  - In this paper we apply symbolic transformations as a visualisation technique for analysing rhythm production. It is shown that qualitative information can be extracted from the experimental data. This approach may provide new insights into the organisation of temporal order by the brain on different levels of description. A simple phenomenological model for the explanation of the observed phenomena is proposed.
Y1  - 1995
SN  - 981-02-2689-6
ER  - 
TY  - JOUR
A1  - Kliegl, Reinhold
A1  - Mayr, Ulrich
A1  - Krampe, Ralf-Thomas
T1  - Time-accuracy functions for the determination of person and process differences : an application to cognitive aging
Y1  - 1994
ER  -