Clinical Neurophysiology
Volume 110, Issue 11 , Pages 1842-1857 , 1 November 1999

Event-related EEG/MEG synchronization and desynchronization: basic principles

  • G. Pfurtscheller

      Affiliations

    • Department of Medical Informatics, Institute of Biomedical Engineering, Technical University Graz, Inffeldgasse 16a/II, A-8010 Graz, Austria
    • Corresponding Author InformationCorresponding author. Tel.: +43-316-873-5301; fax: +43-316-873-5349
    • ,
  • F.H. Lopes da Silva

      Affiliations

    • Institute of Neurobiology, Faculty of Biology, Graduate School of Neurosciences, Amsterdam, The Netherlands

,Accepted 26 May 1999.

References 

  1. Adrian ED, Matthews BH. The Berger rhythm: potential changes from the occipital lobes in man. Brain. 1934;57:355–385
  2. Aftanas LI, Koshkarov VI, Pokrovskaja VL, Lotova NV, Mordvintsev NY. Pre-and post-stimulus processes in affective task and event-related desynchronization (ERD): do they discriminate anxiety coping styles?. Int J Psychophysiol. 1996;24:197–212
  3. Andrew C, Pfurtscheller G. Event-related coherence as a tool for studying dynamic interaction of brain regions. Electroenceph clin Neurophysiol. 1996;98:144–148
  4. Arroyo S, Lesser RP, Gordon B, Uematsu S, Jackson D, Webber R. Functional significance of the mu rhythm of human cortex: an electrophysiological study with subdural electrodes. Electroenceph clin Neurophysiol. 1993;87:76–87
  5. Babiloni F, Babiloni C, Carducci F, Fattorini L, Onorati P, Urbano A. Spline Laplacian estimated of EEG potentials over a realistic magnetic resonance-constructed scalp surface model. Electroenceph clin Neurophysiol. 1996;98:363–373
  6. Basar E, Basar-Eroglu C, Röschke J, Schütt A. The EEG is a quasi-deterministic signal anticipating sensory-cognitive tasks. In:  Basar E,  Bullock TH editor. Brain dynamics, progress and perspectives. Berlin: Springer; 1989;p. 43–71
  7. Berger H. Über das Elektrenkephalogramm des Menschen II. J Psychol Neurol. 1930;40:160–179
  8. Boiten F, Sergeant J, Geuze R. Event-related desynchronization: the effects of energetic and computational demands. Electroenceph clin Neurophysiol. 1992;82:302–309
  9. Braitenberg V, Schüz A. Anatomy of the cortex. New York: Springer; 1991;
  10. Brechet R, Lecasble R. Reactivity of mu-rhythm to flicker. Electroenceph clin Neurophysiol. 1965;18:721–722
  11. Bressler SL, Coppola R, Nakamura R. Episodic multiregional cortical coherence at multiple frequencies during visual task performance. Nature. 1993;366:153–156
  12. Burgess AP, Gruzelier JH. The reliability of event-related desynchronization: a generalisability study analysis. Int J Psyhophysiol. 1996;23:163–169
  13. Chase MH, Harper RM. Somatomotor and visceromotor correlates of operantly conditioned 12–14 c/s sensorimotor cortical activity. Electroenceph clin Neurophysiol. 1971;31:85–92
  14. Chen R, Yassen Z, Cohen LG, Hallett M. The time course of corticospinal excitability in reaction time and self-paced movements. Ann Neurol. 1998;44:317–325
  15. Chui C. An introduction to wavelets. Academic Press; 1994;
  16. Clochon P, Fontbonne J, Lebrun N, Etévenon P. A new method for quantifying EEG event-related desynchronization: amplitude envelope analysis. Electroenceph clin Neurophysiol. 1996;98:126–129
  17. Cooper R, Winter AL, Crow HJ, Grey W. Comparison of subcortical, cortical and scalp activity using chronically indwelling electrodes in man. Electroenceph clin Neurophysiol. 1965;18:217–228
  18. Crone NE, Miglioretti DL, Gordon B, Sieracki JM, Wilson MT, Uematsu S, et al. Functional mapping of human sensorimotor cortex with electrocorticographic spectral analysis. I. Alpha and beta event-related desynchronization. Brain. 1998;121:2271–2299
  19. Crone NE, Miglioretti DL, Gordon B, Lesser RP. Functional mapping of human sensorimotor cortex with electrocorticographic spectral analysis. II. Event-related synchronization in the gamma band. Brain. 1998;121:2301–2315
  20. Defebvre L, Derambure P, Bourriez JL, Jacquesson JM, Dujardin K, Destee A, et al. Spatiotemporal study of event-related desynchronization in idiopathic Parkinson's disease. Adv Neurol. 1993;60:422–428
  21. Defebvre L, Bourriez JL, Dujardin K, Derambure P, Destee A, Guieu JD. Spatiotemporal study of Bereitschaftspotential and event-related desynchronization during voluntary movement in Parkinson's disease. Brain Topogr. 1994;6:237–244
  22. Defebvre L, Bourriez JL, Destee A, Guieu JD. Movement-related desynchronization pattern preceding voluntary movement in untreated Parkinson's disease. J Neurol, Neurosurg Psychiatry. 1996;60:307–312
  23. Defebvre L, Bourriez JL, Derambure P, Duhamel A, Guieu LD, Destee A. Influence of chronic administration of l-DOPA on event-related desynchronization of mu rhythm preceding voluntary movement in Parkinson's disease. Electroenceph clin Neurophysiol. 1998;109:161–167
  24. Derambure P, Defebvre L, Dujardin K, Bourriez JL, Jacquesson JM, Destee A, et al. Effect of aging on the spatio-temporal pattern of event-related desynchronization during a voluntary movement. Electroenceph clin Neurophysiol. 1993;89:197–203
  25. Derambure P, Bourriez JL, Defebvre L, Cassim F, Josien E, Duhamel A, et al. Abnormal cortical activation during planning of voluntary movement in patient with epilepsy with focal motor seizures: event-related desynchronization study of electroencephalografic mu rhythm. Epilepsia. 1997;38:655–662
  26. Diez J, Ortmayr B, Pichler-Zalaudek K, Reisecker F, Pfurtscheller G. Ereignisbezogene EEG-Desynchronisation und Synchronisation (ERD und ERS) bei ideopathischem Parkinsonsyndrom. Klin Neuro. 1999;30:15–21
  27. Doppelmayr M, Klimesch W, Pachinger T, Ripper B. Individual differences in brain dynamics: important implications for the calculation of event-related band power. Biol Cybern. 1998;79:49–57
  28. Dujardin K, Derambure P, Defebvre L, Bourriez JL, Jacquesson JM, Guieu JD. Evaluation of event-related desynchronization (ERD) during a recognition task: effect of attention. Electroenceph clin Neurophysiol. 1993;86:353–356
  29. Edlinger G, Wach P, Pfurtscheller G. On the realization of an analytic high resolution EEG. IEEE Trans Biomed Eng. 1998;45:736–745
  30. Elul R. The genesis of the EEG. Int Rev Neurobiol. 1972;15:227–272
  31. Florian G, Pfurtscheller G. Dynamic spectral analysis of event-related EEG data. Electroenceph clin Neurophysiol. 1995;95:393–396
  32. Florian G, Andrew C, Pfurtscheller G. Do changes in coherence always reflect changes in functional coupling?. Electroenceph clin Neurophysiol. 1998;106:87–91
  33. Gastaut H. Etude electrocorticographique de la reactivite des rhythmes rolandiques. Rev Neurol. 1952;87:176–182
  34. Gerloff C, Hadley J, Richard J, Uenishi N, Honda M, Hallett M. Functional coupling and regional activation of human cortical motor areas during simple, internally paced and externally paced finger movements. Brain. 1998;121:1513–1531
  35. Gevins A, Le L, Brickett P, Reutter B, Desmond J. Seeing through the skull: advanced EEGs use MRIs to accurately measure cortical activity from the scalp. Brain Topogr. 1991;4:125–131
  36. Grafton ST, Woods RP, Mazziotta JC, Phelps ME. Somatotopic mapping of the primary motor cortex in humans: activation studies with cerebral blood flow and positron emission tomography. J Neurophysiol. 1991;66:735–742
  37. Gray CM, König P, Engel A, Singer W. Oscillary responses in cat visual cortex exhibit inter-columnar synchronization which reflects global stimulus properties. Nature. 1988;338:334–337
  38. Hämäläinen M, Ilmoniemi R. Interpreting magnetic fields of the brain: estimates of current distributions. Helsinki University of Technology technical report. Nr. TKK F-A599 (1984).
  39. Hjorth B. An online transformation of EEG scalp potentials into orthogonal source derivations. Electroenceph clin Neurophysiol. 1975;39:526–530
  40. Howe RC, Sterman MB. Cortical-subcortical EEG correlates of suppressed motor behavior during sleep and waking in the cat. Electroenceph clin Neurophysiol. 1972;32:681–695
  41. Hughes JR, Ikram A, Fino JJ. Characteristics of travelling waves under various conditions. Clin Electroencephalogr. 1995;26:7–22
  42. Huiskamp G. Difference formulas for the surface Laplacian on a triangulated surface. J Comput Physics. 1991;95:477–496
  43. Kalcher J, Pfurtscheller G. Discrimination between phase-locked and non-phase-locked event-related EEG activity. Electroenceph clin Neurophysiol. 1995;94:381–483
  44. Karrasch M, Krause CM, Laine M, Lang AH, Lehto M. Event-related desynchronization and synchronization during an auditory lexical matching task. Electroenceph clin Neurophysiol. 1998;107:112–121
  45. Kearfott R, Sidman R, Major D, Hill C. Numerical tests of a method for simulating electrical potentials on the cortical surface. IEEE Trans Biomed Eng. 1991;38:294–299
  46. Kim YC, Powers EJ. Digital bispectral analysis and its applications to nonlinear wave interactions. IEEE Trans Plasma Sci. 1979;7:120–131
  47. Klimesch W. Memory processes, brain oscillations and EEG synchronization. J Psychophysiol. 1996;24:61–100
  48. Klimesch W. Event-related band power changes and memory performance. Event-related desynchronization and related oscillatory phenomena of the brain. In:  Pfurtscheller G,  Lopes da Silva FH editor. Handbook of electroencephalography and clinical neurophysiology. vol. 6, revised edition:Amsterdam: Elsevier; 1999;p. 151–178
  49. Klimesch W, Pfurtscheller G, Schimke H. Pre- and poststimulus processes in category judgement tasks as measured by event-related desynchronization (ERD). J Psychophysiol. 1992;6:186–203
  50. Klimesch W, Schimke H, Pfurtscheller G. Alpha frequency, cognitive load and memory performance. Brain Topogr. 1993;5:1–11
  51. Klimesch W, Schimke H, Schwaiger J. Episodic and semantic memory: an analysis in the EEG theta and alpha band. Electroenceph clin Neurophysiol. 1994;91:428–441
  52. Klimesch W, Schimke H, Doppelmayr M, Riper B, Schwaiger J, Pfurtscheller G. Event-related desynchronization (ERD) and the Dm-effect: does alpha desynchronization during encoding predict later recall performance?. Int J Psychophysiol. 1996;24:47–60
  53. Klimesch W, Doppelmayr M, Russegger H, Pachinger T. Theta band power in the human scalp EEG and the encoding of new information. NeuroReport. 1996;7:1235–1240
  54. Klimesch W, Doppelmayr M, Pachinger Th, Russegger H. Event-related desynchronization in the alpha band and the processing of semantic information. Cogn Brain Res. 1997;6:83–94
  55. Klimesch W, Russegger H, Doppelmayr M, Pachinger T. A method for the calculation of induced band power: implications for the significance of brain oscillations. Electroenceph clin Neurophysiol. 1998;108:123–130
  56. Koshino Y, Niedermeyer E. Enhancement of rolandic mu-rhythm by pattern vision. Electroenceph clin Neurophysiol. 1975;38:535–538
  57. Krause CM, Lang AH, Laine M, Kuusisto M, Pörn B. Event-related EEG desynchronization and synchronization during an auditory memory task. Electroenceph clin Neurophysiol. 1996;98:319–326
  58. Kuhlman WN. Functional topography of the human mu rhythm. Electroenceph clin Neurophysiol. 1978;44:83–93
  59. Law S, Nunez P, Wijesinghe R. High resolution EEG using spline generated surface Laplacians on spherical and ellipsoidal surfaces. IEEE Trans Biomed Eng. 1993;40:145–153
  60. Le J, Menon M, Gevins A. Local estimate of surface Laplacian derivation on a realistically shaped scalp surface and its performance on noisy data. Electroenceph clin Neurophysiol. 1994;92:433–441
  61. Leocani L, Toro C, Manganotti P, Zhuang P, Hallet M. Event-related coherence and event-related desynchronization/synchronization in the 10 Hz and 20 Hz EEG during self-paced movements. Electroenceph clin Neurophysiol. 1997;104:199–206
  62. Lopes da Silva FH. Neural mechanisms underlying brain waves: from neural membranes to networks. Electroenceph clin Neurophysiol. 1991;79:81–93
  63. Lopes da Silva FH. Computer-assisted EEG diagnosis: pattern recognition and brain mapping. In:  Niedermeyer W,  Lopes da Silva F editor. Electroencephalography: basic principles, clinical applications and related fields. 3. Baltimore: Williams and Wilkins; 1993;p. 1063–1086
  64. Lopes da Silva FH, Pfurtscheller G. Basic concepts on EEG synchronization and desynchronization. Event-related desynchronization and related oscillatory phenomena of the brain. In:  Pfurtscheller G,  Lopes da Silva FH editor. Handbook of electroencephalography and clinical neurophysiology. vol. 6, revised edition:Amsterdam: Elsevier; 1999;p. 3–11
  65. Lopes da Silva FH, van Rotterdam A, Storm van Leeuwen W, Tielen AM. Dynamic characteristics of visual evoked potentials in the dog. II. Beta frequency selectivity in evoked potentials and background activity. Electroenceph clin Neurophysiol. 1970;29:260–268
  66. Lopes da Silva FH, van Rotterdam A, Barts P, van Heusden E, Burr W. Models of neuronal populations: the basic mechanisms of rhythmicity. In:  Corner MA,  Swaab DF editor. Perspectives of brain research, Prog Brain Res. vol. 45:1976;p. 281–308
  67. Magnani G, Cursi M, Leocani L, Volonté MA, Locatelli T, Elia A, et al. Event-related desynchronization to contingent negative variation and self-paced movement paradigms in Parkinson's disease. Mov Disord. 1998;13:653–660
  68. Makeig S. Effects of exposure of pure tones on event-related dynamics of the EEG spectrum. Electroenceph clin Neurophysiol. 1993;86:283–293
  69. Mulholland T. The concept of attention and the electroencephalographic alpha rhythm. In:  Evans CR,  Mulholland TB editor. Attention in neurophysiology. London: Butterworth; 1969;p. 100–127
  70. Murthy VN, Fetz EE. Coherent 25- to 35-Hz oscillations in the sensorimotor cortex of awake behaving monkeys. Proc Natl Acad Sci USA. 1992;89:5670–5674
  71. Neubauer A, Freudenthaler HH, Pfurtscheller G. Intelligence and spatiotemporal patterns of event-related desynchronization (ERD). Intelligence. 1995;20:249–266
  72. Neubauer AC, Sange G, Pfurtscheller G. Psychometric intelligence and event-related desynchronization during performance of a letter matching task. Event-related desynchronization and related oscillatory phenomena of the brain. In:  Pfurtscheller G,  Lopes da Silva FH editor. Handbook of electroencephalography and clinical neurophysiology. vol. 6, revised edition:Amsterdam: Elsevier; 1999;p. 219–231
  73. Neuper C, Pfurtscheller G. Post-movement synchronization of beta rhythms in the EEG over the cortical foot area in man. Neurosci Lett. 1996;216:17–20
  74. Neuper C, Pfurtscheller G. Motor imagery and ERD. Event-related desynchronization and related oscillatory phenomena of the brain. In:  Pfurtscheller G,  Lopes da Silva FH editor. Handbook of electroencephalography and clinical neurophysiology. vol. 6, revised edition:Amsterdam: Elsevier; 1999;p. 303–326
  75. Nogawa T, Katayama K, Tabata Y, Ohshio T, Kawahara T. Changes in amplitude of the EEG induced by a photic stimulus. Electroenceph clin Neurophysiol. 1976;40:78–88
  76. Pascual-Leone A, Dang N, Cohen LG, Brasil-Neto JP, Cammarota A, Hallett M. Modulation of muscle responses evoked by transcranial magnetic stimulation during the acquisition of new fine motor skills. J Neurophysiol. 1995;74:1037–1045
  77. Perrin F, Bertrand O, Pernier J. Scalp current density mapping: value and estimation from potential data. IEEE Trans Biomed Eng. 1987;34:283–288
  78. Pfurtscheller G. Graphical display and statistical evaluation of event-related desynchronization (ERD). Electroenceph clin Neurophysiol. 1977;43:757–760
  79. Pfurtscheller G. Event-related synchronization (ERS): an electrophysiological correlate of cortical areas at rest. Electroenceph clin Neurophysiol. 1992;83:62–69
  80. Pfurtscheller G. Quantification of ERD and ERS in the time domain. Event-related desynchronization and related oscillatory phenomena of the brain. In:  Pfurtscheller G,  Lopes da Silva FH editor. Handbook of electroencephalography and clinical neurophysiology. vol. 6, revised edition:Amsterdam: Elsevier; 1999;p. 89–106
  81. Pfurtscheller G, Aranibar A. Event-related cortical desynchronization detected by power measurements of scalp EEG. Electroenceph clin Neurophysiol. 1977;42:817–826
  82. Pfurtscheller G, Aranibar A. Evaluation of event-related desynchronization (ERD) preceding and following voluntary self-paced movements. Electroenceph clin Neurophysiol. 1979;46:138–146
  83. Pfurtscheller G, Berghold A. Patterns of cortical activation during planning of voluntary movement. Electroenceph clin Neurophysiol. 1989;72:250–258
  84. Pfurtscheller G, Klimesch W. Functional topography during a visuoverbal judgement task studied with event-related desynchronization mapping. J Clin Neurophysiol. 1992;9:120–131
  85. Pfurtscheller G, Lopes da Silva FH. Event-related desynchronization and related oscillatory phenomena of the brain. Handbook of electroencephalography and clinical neurophysiology. vol. 6, revised edition. Amsterdam: Elsevier; 1999;
  86. Pfurtscheller G, Lopes da Silva FH. Functional meaning of event-related desynchronization (ERD) and -synchronization (ERS). Event-related desynchronization and related oscillatory phenomena of the brain. In:  Pfurtscheller G,  Lopes da Silva FH editor. Handbook of electroencephalography and clinical neurophysiology. vol. 6, revised edition:Amsterdam: Elsevier; 1999;p. 51–66
  87. Pfurtscheller G, Neuper C. Event-related synchronization of mu rhythm in the EEG over the cortical hand area in man. Neurosci Lett. 1994;174:93–96
  88. Pfurtscheller G, Neuper C. Motor imagery activates primary sensorimotor area in humans. Neurosci Lett. 1997;239:65–68
  89. Pfurtscheller G, Zalaudek K. Event-related beta synchronization after wrist, finger and thumb movement. Electroenceph clin Neurophysiol. 1998;109:154–160
  90. Pfurtscheller G, Sager G, Wege W. Correlations between CT scan and sensorimotor EEG rhythms in patients with cerebrovascular disorders. Electroenceph clin Neurophysiol. 1981;52:473–485
  91. Pfurtscheller G, Neuper Ch, Kalcher J. 40-Hz oscillations during motor behavior in man. Neurosci Lett. 1993;162:179–182
  92. Pfurtscheller G, Pregenzer M, Neuper C. Visualization of sensorimotor areas involved in preparation for hand movement based on classification of mu and beta rhythms in single EEG trials in man. Neurosci Lett. 1994;181:43–46
  93. Pfurtscheller G, Neuper C, Berger J. Source localization using event-related desynchronization (ERD) within the alpha band. Brain Topogr. 1994;6/4:269–275
  94. Pfurtscheller G, Stancák A, Neuper Ch. Post-movement beta synchronization: a correlate of an idling motor area?. Electroenceph clin Neurophysiol. 1996;98:281–293
  95. Pfurtscheller G, Stancák A, Neuper Ch. Event-related synchronization (ERS in the alpha band–an electrophysiological correlate of cortical idling: a review. Int J Psychophysiol. 1996;24:39–46
  96. Pfurtscheller G, Stancák A, Edlinger G. On the existence of different types of central beta rhythms below 30 Hz. Electroenceph clin Neurophysiol. 1997;102:316–325
  97. Pfurtscheller G, Neuper Ch, Andrew C, Edlinger G. Foot and hand area mu rhythms. J Psychophysiol. 1997;26:121–135
  98. Pfurtscheller G, Neuper Ch, Flotzinger D, Pregenzer M. EEG-based discrimination between imagination of right and left hand movement. Electroenceph clin Neurophysiol. 1997;103:642–651
  99. Pfurtscheller G, Pichler-Zalaudek K, Ortmayr B, Diez J, Reisecker F. Post-movement beta synchronization in patients with Parkinson's disease. J Clin Neurophysiol. 1998;15(3):243–250
  100. Pfurtscheller G, Pichler-Zalaudek K, Neuper C. ERD and ERS in voluntary movement of different limbs. Event-related desynchronization and related oscillatory phenomena of the brain. In:  Pfurtscheller G,  Lopes da Silva FH editor. Handbook of electroencephalography and clinical neurophysiology. vol. 6, revised edition:Amsterdam: Elsevier; 1999;p. 245–268
  101. Rougeul A, Bouyer JJ, Dedet L, Debray O. Fast somatoparietal rhythms during combined focal attention and immobility in baboon and squirrel monkey. Electroenceph clin Neurophysiol. 1979;46:310–319
  102. Salenius S, Salmelin R, Neuper Ch, Pfurtscheller G, Hari R. Human cortical 40 Hz rhythm is closely related to EMG rhythmicity. Neurosci Lett. 1996;213:75–78
  103. Salmelin R, Hämäläinen M, Kajola M, Hari R. Functional segregation of movement-related rhythmic activity in the human brain. Neuroimage. 1995;2:237–243
  104. Sergeant J, Geuze R, Van Winsum W. Event-related desynchronization and P300. Psychophysiology. 1987;24:272–277
  105. Sayers B, Mc A, Beayley HA, Henshall WR. The mechanism of auditory evoked EEG responses. Nature. 1974;247:481–483
  106. Singer W. Synchronization of cortical activity and its putative role in information processing and learning. Ann Rev Physiol. 1993;55:349–374
  107. Stancák A, Pfurtscheller G. Mu-rhythm changes in brisk and slow self-paced finger movements. NeuroReport. 1996;7:1161–1164
  108. Stancák A, Pfurtscheller G. Event-related desynchronisation of central beta rhythms in brisk and slow self-paced finger movements of dominant and nondominant hand. Cogn Brain Res. 1996;4:171–184
  109. Stancák A, Pfurtscheller G. Effects of handedness on movement-related changes of central beta rhythms. J Clin Neurophysiol. 1997;14:419–428
  110. Steriade M, Llinas R. The functional states of the thalamus and the associated neuronal interplay. Phys Rev. 1988;68:649–742
  111. Sterman MB, Howe RD, MacDonald LR. Facilitation of spindle-burst sleep by conditioning of electroencephalographic activity while awake. Science. 1970;167:1146–1148
  112. Sterman MB, Kaiser DA, Veigel B. Spectral analysis of event-related EEG responses during short-term memory performance. Brain Topogr. 1996;9/1:21–30
  113. Suffczynski P, Pijn JMP, Pfurtscheller G, Lopes da Silva FH. Event-related dynamics of alpha band rhythms: a neuronal network model of focal ERD/surround ERS. Event-related desynchronization and related oscillatory phenomena of the brain. In:  Pfurtscheller G,  Lopes da Silva FH editor. Handbook of electroencephalography and clinical Neurophysiology. vol. 6, revised edition:Amsterdam: Elsevier; 1999;in press
  114. Thickbroom G, Mastaglia F, Carroll W, Davies H. Source derivation: application to topographic mapping of visual evoked potentials. Electroenceph clin Neurophysiol. 1984;59:279–285
  115. Tiihonen J, Hari R, Kajola M, Karhu J, Ahlfors S, Tissari S. Magnetoencephalographic 10-Hz rhythm from the human auditory cortex. Neurosci Lett. 1991;129:303–305
  116. Toro C, Deuschl G, Thatcher R, Sato S, Kufta C, Hallett M. Event-related desynchronization and movement-related cortical potentials on the ECoG and EEG. Electroenceph clin Neurophysiol. 1994;93:380–389
  117. van Burik M, Pfurtscheller G. Functional imaging of post-movement beta event-related synchronization. J Clin Neurophysiol. 1999; in press;
  118. van Burik M, Knösche T, Edlinger G, Neuper C, Pfurtscheller G, Peters M. Post-movement beta oscillations studied with linear estimation. Electroencephalogr clin Neurophysiol. 1998;106:195–198
  119. van Burik M, Edlinger G, Pfurtscheller G. Spatial mapping of ERD/ERS. Event-related desynchronization and related oscillatory phenomena of the brain. In:  Pfurtscheller G,  Lopes da Silva FH editor. Handbook of electroencephalography and clinical neurophysiology. vol. 6, revised edition:Amsterdam: Elsevier; 1999;p. 107–118
  120. van Winsum W, Sergeant J, Gueze R. The functional significance of event-related desynchronization of alpha rhythms in attentional and activating tasks. Electroenceph clin Neurophysiol. 1984;58:519–524
  121. Vijn PCM, van Dijk BW, Spekreijse H. Visual stimulation reduced EEG activity in man. Brain Res. 1991;550:49–53
  122. Wang J, Kaufman L, Williamson S. Imaging regional changes in the spontaneous activity of the brain: an extension of the minimum-norm least-squares estimate. Electroenceph clin Neurophysiol. 1993;86:36–50
  123. Wei J, Zhao L, Yan G, Duan R, Li D. The temporal and spatial features of event-related EEG spectral changes in 4 mental conditions. Electroenceph clin Neurophysiol. 1998;106:416–423
  124. Westphal KP, Grözinger B, Diekmann V, Kornhuber HH. EEG-blocking before and during voluntary movements: differences between the eyes-closed and eyes-open condition. Arch Ital Biol. 1993;131:25–35
  125. Zhuang P, Toro C, Grafman J, Manganotti P, Leocani L, Hallett M. Event-related desynchronization (ERD) in the alpha frequency during development of implicit and explicit learning. Electroenceph clin Neurophysiol. 1997;102:374–381

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Clinical Neurophysiology
Volume 110, Issue 11 , Pages 1842-1857 , 1 November 1999

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