Infant EEG and fNIRS - What kind of questions can we address?

7 important questions on Infant EEG and fNIRS - What kind of questions can we address?

What do we measure with EEG?

Change in voltage as a function of time (due to a mental or physical occurence)

Toybox ERP study:

  • 8 to 11-month-old infants make visual anticipations to future actions based on statistical regularities

How do 2.5-year-old toddlers perceive feedback? -> Experiment:

Show a lion and then ask, where you think is the other lion going to be?
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Results of feedback experiment (lions)

-> Amplitude and Latencies are different between toddlers and adults

Adults are faster -> peak is earlier, less variability

Infants have noisier data -> individual differences, how much do they learn from feedback

Lower frequencies when they were younger

Change in power of different frequencies

  • Characterised by certain phase and amplitude
  • give different frequency bands, depending on:
    • condition
    • extracting power
    • phase

2 frequency bands of interest (FOI)

  • Central alpha -> mu
  • beta

What happens to the frequency bands when perform an action?

  • Suppression of alpha  in motor area,
    • because alpha is inhibitory

OR:
  • when they do not move: they are all in synchrony but when they move they go out in synchrony


Less power in mu when performing an action

The question on the page originate from the summary of the following study material:

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