Articles:Analysis Event-related EEG/MEG synchronization and desynchronization: Basic principles
From unthinkMedia
event-related potentials (ERPs)
You could use EEG/MEG, as a method of measuring the brain response that is directly the result of a thought or perception.
- averaging techniques are commonly used
- enhance the signal-to-noise ratio
- just an approximation
- visual stimuli can reduce the amplitude of the ongoing EEG amplitude (Vijn et al., 1991)
Note: certain events can block or desynchronize the ongoing alpha activity (Berger, 1930)
ERD/ERS phenomena: generated by changes in one or more parameters that control oscillations in neuronal networks
properties of EEG oscillations
- the intrinsic membrane properties of the neurons and the dynamics of synaptic processes;
- the strength and extent of the interconnections between the network elements, most often formed by feedback
