Abstract
Kampis et al . [[1][1]] use gamma oscillations (here 25–35 Hz) in the scalp-recorded electroencephalogram (EEG) of infants to investigate the neuronal signatures of objects representations. Oscillations in the gamma range have been used in several infant studies in the recent years [[2][2]–[4][3
Highlights
Kampis et al [1] use gamma oscillations in the scalprecorded electroencephalogram (EEG) of infants to investigate the neuronal signatures of objects representations
Oscillations in the gamma range have been used in several infant studies in the recent years [2,3,4] and are viewed as an important tool to investigate preverbal object representation processes [5,6]
In the EEG of adults, Yuval-Greenberg et al [7] have demonstrated beyond doubt that microsaccadic eye movements contaminate the gamma-band activity measured by the EEG and are, like neuronal gamma-band responses, sensitive to different cognitive processes, including object representation processes
Summary
Kampis et al [1] use gamma oscillations (here 25 –35 Hz) in the scalprecorded electroencephalogram (EEG) of infants to investigate the neuronal signatures of objects representations. Oscillations in the gamma range have been used in several infant studies in the recent years [2,3,4] and are viewed as an important tool to investigate preverbal object representation processes [5,6]. Kampis et al [1] (and the authors of the other studies mentioned above [2 –4]) do not mention that they tested for microsaccadic eye movements in their subjects, which is critical when analysing gamma-band oscillations in the EEG.
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