Do infants represent the face in a viewpoint-invariant manner? Neural adaptation study as measured by near-infrared spectroscopy
Recent adult fMRI studies reported that face sensitive cortical areas showed attenuated responses to the repeated presentation of an identical facial image compared to the presentation of different facial images (fMRI-adaptation effects: e.g., Andrews & Ewbank, 2004). Building upon this find...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2011-11-01
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| Series: | Frontiers in Human Neuroscience |
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| Online Access: | http://journal.frontiersin.org/Journal/10.3389/fnhum.2011.00153/full |
| _version_ | 1828806902400679936 |
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| author | Megumi eKobayashi Megumi eKobayashi Yumiko eOtsuka Yumiko eOtsuka Emi eNakato So eKanazawa Masami K Yamaguchi Ryusuke eKakigi |
| author_facet | Megumi eKobayashi Megumi eKobayashi Yumiko eOtsuka Yumiko eOtsuka Emi eNakato So eKanazawa Masami K Yamaguchi Ryusuke eKakigi |
| author_sort | Megumi eKobayashi |
| collection | DOAJ |
| description | Recent adult fMRI studies reported that face sensitive cortical areas showed attenuated responses to the repeated presentation of an identical facial image compared to the presentation of different facial images (fMRI-adaptation effects: e.g., Andrews & Ewbank, 2004). Building upon this finding, the current study, employing the adaptation paradigm, used NIRS to explore the neural basis of face processing in infants. In Experiment 1, we compared hemodynamic responses in the bilateral temporal regions during the repeated presentation of the same face (the same-face condition) and the sequential presentation of different faces (the different-face condition). We found that 1) hemodynamic responses in the channels around the T5 and T6 regions increased during the presentation of different faces compared to those during the presentation of different objects; and that 2) these channels showed significantly lower response in the same-face condition than in the different-face condition, demonstrating the neural adaptation effect in 5- to 8-month-olds as measured by NIRS. In Experiment 2, when faces in both the same-face and different-face conditions were changed in viewpoint, lower hemodynamic responses in the same-face condition were found in 7- to 8-month-olds but not in 5- to 6-month-olds. Our results suggest that faces are represented in a viewpoint-invariant manner in 7- and 8-month-old infants. |
| first_indexed | 2024-12-12T08:16:27Z |
| format | Article |
| id | doaj.art-9e147555e8e742a7b8407726d9c8db45 |
| institution | Directory Open Access Journal |
| issn | 1662-5161 |
| language | English |
| last_indexed | 2024-12-12T08:16:27Z |
| publishDate | 2011-11-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Human Neuroscience |
| spelling | doaj.art-9e147555e8e742a7b8407726d9c8db452022-12-22T00:31:33ZengFrontiers Media S.A.Frontiers in Human Neuroscience1662-51612011-11-01510.3389/fnhum.2011.0015314135Do infants represent the face in a viewpoint-invariant manner? Neural adaptation study as measured by near-infrared spectroscopyMegumi eKobayashi0Megumi eKobayashi1Yumiko eOtsuka2Yumiko eOtsuka3Emi eNakato4So eKanazawa5Masami K Yamaguchi6Ryusuke eKakigi7Chuo UniversityJapan Society for the Promotion of ScienceThe University of New South WalesJapan Women's UniversityNational Institute for Physical SciencesJapan Women's UniversityChuo UniversityNational Institute for Physical SciencesRecent adult fMRI studies reported that face sensitive cortical areas showed attenuated responses to the repeated presentation of an identical facial image compared to the presentation of different facial images (fMRI-adaptation effects: e.g., Andrews & Ewbank, 2004). Building upon this finding, the current study, employing the adaptation paradigm, used NIRS to explore the neural basis of face processing in infants. In Experiment 1, we compared hemodynamic responses in the bilateral temporal regions during the repeated presentation of the same face (the same-face condition) and the sequential presentation of different faces (the different-face condition). We found that 1) hemodynamic responses in the channels around the T5 and T6 regions increased during the presentation of different faces compared to those during the presentation of different objects; and that 2) these channels showed significantly lower response in the same-face condition than in the different-face condition, demonstrating the neural adaptation effect in 5- to 8-month-olds as measured by NIRS. In Experiment 2, when faces in both the same-face and different-face conditions were changed in viewpoint, lower hemodynamic responses in the same-face condition were found in 7- to 8-month-olds but not in 5- to 6-month-olds. Our results suggest that faces are represented in a viewpoint-invariant manner in 7- and 8-month-old infants.http://journal.frontiersin.org/Journal/10.3389/fnhum.2011.00153/fullFaceNIRSinfantsnear-infrared spectroscopyadaptation effectviewpoint-invariant |
| spellingShingle | Megumi eKobayashi Megumi eKobayashi Yumiko eOtsuka Yumiko eOtsuka Emi eNakato So eKanazawa Masami K Yamaguchi Ryusuke eKakigi Do infants represent the face in a viewpoint-invariant manner? Neural adaptation study as measured by near-infrared spectroscopy Frontiers in Human Neuroscience Face NIRS infants near-infrared spectroscopy adaptation effect viewpoint-invariant |
| title | Do infants represent the face in a viewpoint-invariant manner? Neural adaptation study as measured by near-infrared spectroscopy |
| title_full | Do infants represent the face in a viewpoint-invariant manner? Neural adaptation study as measured by near-infrared spectroscopy |
| title_fullStr | Do infants represent the face in a viewpoint-invariant manner? Neural adaptation study as measured by near-infrared spectroscopy |
| title_full_unstemmed | Do infants represent the face in a viewpoint-invariant manner? Neural adaptation study as measured by near-infrared spectroscopy |
| title_short | Do infants represent the face in a viewpoint-invariant manner? Neural adaptation study as measured by near-infrared spectroscopy |
| title_sort | do infants represent the face in a viewpoint invariant manner neural adaptation study as measured by near infrared spectroscopy |
| topic | Face NIRS infants near-infrared spectroscopy adaptation effect viewpoint-invariant |
| url | http://journal.frontiersin.org/Journal/10.3389/fnhum.2011.00153/full |
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