Mu rhythm desynchronization is specific to action execution and observation: Evidence from time-frequency and connectivity analysis.

Mu desynchronization is the attenuation of EEG power in the alpha frequency range recorded over central scalp locations thought to reflect motor cortex activation. Mu desynchronization during observation of an action is believed to reflect mirroring system activation in humans. However, this notion has recently been questioned because, among other reasons, the potential contamination of mu rhythm and occipital alpha activity induced by attention processes following presentation of visual stimuli in observation conditions.

Assessing human mirror activity with EEG mu rhythm: A meta-analysis.

A fundamental issue in cognitive neuroscience is how the brain encodes others' actions and intentions. In recent years, a potential advance in our knowledge on this issue is the discovery of mirror neurons in the motor cortex of the nonhuman primate. These neurons fire to both execution and observation of specific types of actions.

Desynchronization in EEG during perception of means-end actions and relations with infants' grasping skill.

The current study examined age-related differences in electroencephalogram (EEG) activity during perception of means-end actions and production of grasps, and how EEG activity may relate to infants' motor competence. We collected data from 9- and 12-month-old infants during perception of means-end actions made with a tool and during execution of their own grasps. We computed event-related desynchronization (ERD) during perception and production events and assessed infants' reach-grasp competence by looking at their latency to complete grasps.

The Infant EEG Mu Rhythm: Methodological Considerations and Best Practices.

The EEG mu rhythm, recorded from scalp regions overlying the sensorimotor cortex, appears to exhibit mirroring properties: It is reactive when performing an action and when observing another perform the same action. Recently, there has been an exponential increase in developmental mu rhythm research, partially due to the mu rhythm's potential role in our understanding of others' actions as well as a variety of other social and cognitive processes (e.g.

Effects of negative temperament on 5-month-old infants' behavior during the still-face paradigm.

Five-month-old infants characterized as low or high on temperamental negativity participated with their mothers in the still-face paradigm. Compared to low negative infants, high negative infants displayed greater negative engagement during reunion suggesting that infant temperament significantly contributes to individual differences in the still-face effect.