Facial color processing in the face-selective regions: an fMRI study

Area of Science:

• Neuroscience
• Cognitive Neuroscience
• Social Neuroscience

Background:

• Facial color provides vital social cues for recognizing emotions and health.
• Previous electroencephalography (EEG) studies suggested the N170 component's involvement in facial color processing.
• The precise brain regions for facial color processing remain unclear due to EEG's limited spatial resolution.

Purpose of the Study:

• To investigate the neural substrates of facial color processing using functional magnetic resonance imaging (fMRI).
• To identify specific brain areas responsible for processing the color of faces.

Main Methods:

• fMRI was used to measure brain activity in 25 subjects.
• Participants viewed natural-colored and bluish-colored faces alongside their scrambled versions.
• The fusiform face area (FFA) and occipital face area (OFA) were identified and analyzed using region of interest (ROI) analysis.

Main Results:

• Bilateral FFA and OFA were localized by contrasting faces with scrambled images.
• The left FFA showed sensitivity to facial color.
• The right FFA and both left and right OFA were not sensitive to facial color.

Conclusions:

• The left fusiform face area (FFA) plays a significant role in processing facial color.
• These findings complement prior EEG research, suggesting a specific neural basis for facial color perception.
• Understanding facial color processing enhances insights into social communication and perception.