Head , Engineer, PhD, Associate Professor in Physiology

• , PhD, Assoc. Professor in Psychophysiology
• , MD, PhD, Research Fellow
• , Engineer, Research Fellow
• , Technician
• , PhD student

MAIN RESEARCH TOPICS

• Neurophysiological mechanisms of development and aging: normal and pathological aspects
• Cognitive neurodynamics of executive control, memory and attention
• Endogenous components of event-related brain potentials and cognitive processes (memory and attention) in children and adults
• Time-frequency components of event-related brain potentials
• Cognitive correlates of event-related oscillations
• Neurophysiological analysis of sleep
• Methods for time-frequency analysis of neuroelectric signals

METHODS

• EEG and event-related brain potentials
• Combined time and frequency domain analysis of event-related brain potentials
• Single-sweep analysis of event-related brain potentials with special emphasis on phase-locking and spatial synchronization
• Methods for time-frequency analysis of event-related oscillatory dynamics: event-related synchronization (ERS) and desynchronization (ERD), Wavelet analysis, spatial analysis

SELECTED PUBLICATIONS

• Kolev V. and Yordanova J. Analysis of phase-locking is informative for studying event-related EEG activity. Biological Cybernetics 76: 229-235, 1997.
• Yordanova J. and Kolev V. Developmental changes in the relationship between EEG theta response and P300. Electroenceph. Clin. Neurophysiol. 104: 418-430, 1997.
• Yordanova J. and Kolev V. A single-sweep analysis of the theta frequency band during an auditory oddball task. Psychophysiology 35: 116-126, 1998.
• Yordanova J., Kolev V. and Polich J. P300 and alpha event-related desynchronization (ERD). Psychophysiology 38: 143-152, 2001.
• Yordanova J., Banaschewski T., Kolev V., Woerner W. and Rothenberger A. Abnormal early stages of task stimulus processing in children with attention-deficit hyperactivity disorder - evidence from event-related gamma oscillations. Clin. Neurophysiol. 112: 1096-1108, 2001.
• Yordanova J., Kolev V., Heinrich H., Woerner W., Banaschewski T. and Rothenberger A. Developmental event-related gamma oscillations: effects of auditory attention. Eur. J. Neurosci. 16: 2214-2224, 2002.
• Yordanova J., Kolev V., Hohnsbein J. and Falkenstein M. Sensorimotor slowing with aging is mediated by a functional dysregulation of motor-generation processes: Evidence from high-resolution ERPs. Brain 127: 351-362, 2004.
• Yordanova J., Falkenstein M., Hohnsbein J. and Kolev V. Parallel systems of error processing in the brain. NeuroImage 22: 590-602, 2004.
• Yordanova J., Heinrich H., Kolev V. and Rothenberger A. Increased event-related theta activity as a psychophysiological marker of comorbidity in children with tics and attention-deficit/hyperactivity disorders. NeuroImage 32: 940-955, 2006.
• Kolev V., Falkenstein M. and Yordanova J. Motor-response generation as a source of aging-related behavioural slowing in choice-reaction tasks. Neurobiol. Aging 27: 1719-1730, 2006.

RESEARCH PROJECTS

• "Time-frequency and self-adapting methods for bioelectric signal analysis: Innovate applications in child psychiatry" - with the Clinics for Child and Adolescent Psychiatry, University of Gottingen, Germany. Supported by the Klaus Tschira Foundation, Heidelberg, Germany (2001-2004).
• "Brain mechanisms of ageing related behavioural slowing" - with the Leibniz Research Centre for Environment and Human Factors, Institute of Occupational Physiology, Dortmund. Supported by the Heinrich Hertz Foundation, Dusseldorf, Germany (2004-2005).
• "Individual differences in the functional dynamics of stimulus information processing in the brains of low and highly attentive healthy individuals" - with Virginia Polytechnic Institute and State University, Blacksburg, VA, USA. Supported by the National Research Council, USA (2005-2007).
• "Time-frequency and spatial characteristics of neuroelectrical responses in child psychiatric disorders". Supported by the National Scientific Council, Sofia (2003-2006).
• "Central Brain Mechanisms of Behavioural Control during Ageing". Supported by the National Scientific Council, Sofia (2005-2008).

INTERNATIONAL SCIENTIFIC RELATIONS

• Clinics for Child and Adolescent Psychiatry, University of Gottingen, Gottingen, Germany
• Institute of Occupational Physiology, Leibniz Research Centre for Environment and Human Factors, Dortmund, Germany
• Neurology Clinics, University Clinics Schleswig-Holstein, University of Lubeck, Lubeck, Germany
• Institute of Neuroendocrinology, University of Lubeck, Lubeck, Germany
• Instituto de Calculo, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
• Institute of Psychology and Cognition Research, University of Bremen, Germany
• Scripps Research Institute, La Jolla, California, USA
• Institute of Physiology, University of Lubeck, Lubeck, Germany
• Brain Research Unit, Low Temperature Laboratory, Helsinki University of Technology, Espoo, Finland
• Department of Psychology, Department of Social and Behavioral Sciences, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA
• Heckscher-Klinik, Munchen, Germany
• Child and Adolescent Psychiatry, University Clinics Erlangen, Erlangen, Germany
• Centre for Twin and Family Research, University of Minnesota, Minneapolis, USA