Jun, 2014
The processing of faces across non-rigid facial transformation develops at 7 month of age: a fNIRS-adaptation study
BMC NEUROSCIENCE
- ,
- ,
- ,
- ,
- Volume
- 15
- Number
- First page
- 81
- Last page
- Language
- English
- Publishing type
- Research paper (scientific journal)
- DOI
- 10.1186/1471-2202-15-81
- Publisher
- BIOMED CENTRAL LTD
Background: Using near-infrared spectroscopy (NIRS), our previous neural adaptation studies found that infants' bilateral temporal regions process facial identity (FiHN 5:153, 2011). In addition, we revealed that size-invariant processing of facial identity develops by 5 months of age (NR 23:984-988, 2012), while view-invariant processing develops around 7 months of age (FiHN 5:153, 2011). The aim in the current study was to examine whether infants' brains process facial identity across the non-rigid transformation of facial features by using the neural adaptation paradigm. We used NIRS to compare hemodynamic changes in the bilateral temporal areas of 5- to 6-month-olds and 7- to 8-month-olds during presentations of an identical face and of different faces.
Results: We found that (1) the oxyhemoglobin concentration around the T5 and T6 positions increased significantly during the presentation of different faces only in 7- to 8-month-olds and (2) 7- to 8-month-olds, but not 5- to 6-month-olds, showed attenuation in these channels to the presentation of the same face rather than to the presentation of different faces, regardless of non-rigid changes in facial features.
Conclusions: Our results suggest that the processing of facial identity with non-rigid facial transformation develops around 7 months after birth.
Results: We found that (1) the oxyhemoglobin concentration around the T5 and T6 positions increased significantly during the presentation of different faces only in 7- to 8-month-olds and (2) 7- to 8-month-olds, but not 5- to 6-month-olds, showed attenuation in these channels to the presentation of the same face rather than to the presentation of different faces, regardless of non-rigid changes in facial features.
Conclusions: Our results suggest that the processing of facial identity with non-rigid facial transformation develops around 7 months after birth.
- Link information
- ID information
-
- DOI : 10.1186/1471-2202-15-81
- ISSN : 1471-2202
- Pubmed ID : 24965204
- Web of Science ID : WOS:000338788500002