Development of face-sensitive event-related potentials during infancy: a review

Area of Science:

• Neuroscience
• Developmental Psychology
• Cognitive Science

Background:

• Adult event-related potential (ERP) studies identify neural correlates of face encoding and recognition memory.
• Behavioral studies show infants detect and recognize faces, but few ERP studies explore these early neural mechanisms.

Purpose of the Study:

• To review ERP components (P1, N290, P400, Nc) and slow wave activity in infants viewing faces.
• To link infant ERP components to their potential adult and child equivalents.
• To discuss the significance of infant face processing ERPs for understanding the origins and specificity of adult cortical face systems.

Main Methods:

• Review of existing event-related potential (ERP) literature on infant face processing.
• Analysis of specific ERP components (P1, N290, P400, Nc) and slow wave activity.
• Comparison of infant ERP findings with those in older children and adults.

Main Results:

• Identification of four key ERP components (P1, N290, P400, Nc) and slow wave activity elicited by faces in infants.
• Established potential links between infant and adult ERP components related to face perception.
• Highlighted areas requiring further research in infant face processing.

Conclusions:

• ERPs provide valuable insights into the neural basis of early face recognition abilities.
• Understanding infant face processing through ERPs informs theories on the development and specialization of the adult face processing network.
• Further investigation is needed to fully elucidate the developmental trajectory of face-specific neural activity.