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Peer-reviewedCC BY 4.0Frontiers in Neural Circuits

Facial affect and arousal as a complement to gaze measures in infant speech sound perception studies

  • Sho Tsuji
  • Fernanda Alonso
  • Hiromichi Hagihara
  • Nanako Kimura
  • Linda Polka
  • Irena Lovčević
Open at sourcePDFDOICite

Abstract

This study explores infant facial expressions during visual habituation to investigate perceptual attunement to native and non-native speech sounds. Using automated facial affect analysis based on Facial Action Units, we analyzed valence, arousal, positive affect, and negative affect during the experiment. Valence and arousal decreased with habituation, while positive affect increased, with differences between native and non-native stimuli. Facial affect showed links to discrimination outcomes, with better native discrimination linked to reduced negative affect. These findings highlight the potential of facial expression analysis as a complementary tool to gaze-based measures in early language development research.

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Cite

BibTeXRIS
BibTeX
@article{tsuji2026facial,
  title = {{Facial affect and arousal as a complement to gaze measures in infant speech sound perception studies}},
  author = {Sho Tsuji and Fernanda Alonso and Hiromichi Hagihara and Nanako Kimura and Linda Polka and Irena Lovčević},
  journal = {Frontiers in Neural Circuits},
  year = {2026},
  month = aug,
  doi = {10.3389/fncir.2025.1553918},
  url = {https://hal.science/hal-05732984v1},
  note = {CC BY 4.0},
}
RIS
TY  - JOUR
TI  - Facial affect and arousal as a complement to gaze measures in infant speech sound perception studies
AU  - Sho Tsuji
AU  - Fernanda Alonso
AU  - Hiromichi Hagihara
AU  - Nanako Kimura
AU  - Linda Polka
AU  - Irena Lovčević
PY  - 2026
DA  - 2026/08/31
JO  - Frontiers in Neural Circuits
DO  - 10.3389/fncir.2025.1553918
UR  - https://hal.science/hal-05732984v1
AB  - This study explores infant facial expressions during visual habituation to investigate perceptual attunement to native and non-native speech sounds. Using automated facial affect analysis based on Facial Action Units, we analyzed valence, arousal, positive affect, and negative affect during the experiment. Valence and arousal decreased with habituation, while positive affect increased, with differences between native and non-native stimuli. Facial affect showed links to discrimination outcomes, with better native discrimination linked to reduced negative affect. These findings highlight the potential of facial expression analysis as a complementary tool to gaze-based measures in early language development research.
SN  - 1662-5110
ER  -