Abstract
Behavioral researches have shown that the visual function can be partly restored by phosphene-based prosthetic vision for the non-congenital blinds. However, the early visual processing mechanisms of phosphene object recognition is still unclear. This paper aimed to investigate the electro-neurophysiology underlying the phosphene face and non-face recognition. The modulations of latency and amplitude of N170 component in the event-related potential (ERP) were analyzed. Our preliminary results showed that (1) both normal and phosphene face stimuli could elicit prominent N170; nevertheless, phosphene stimuli caused notable latency delay and amplitude suppression on N170 compared with normal stimuli and (2) under phosphene non-face stimuli, a slight but significant latency delay occurred compared with normal stimuli, while amplitude suppression was not observed. Therefore, it was suggested that (1) phosphene perception caused a disruption of the early visual processing for non-canonical images of objects, which was more profound in phosphene face processing; (2) the face-specific processing was reserved under prosthetic vision and (3) holistic processing was the major stage in early visual processing of phosphene face recognition, while part-based processing was attenuated due to the loss of the details.
| Original language | English (US) |
|---|---|
| Title of host publication | Proceedings of the 31st Annual International Conference of the IEEE Engineering in Medicine and Biology Society |
| Subtitle of host publication | Engineering the Future of Biomedicine, EMBC 2009 |
| Publisher | IEEE Computer Society |
| Pages | 3952-3955 |
| Number of pages | 4 |
| ISBN (Print) | 9781424432967 |
| DOIs | |
| State | Published - Jan 1 2009 |
| Event | 31st Annual International Conference of the IEEE Engineering in Medicine and Biology Society: Engineering the Future of Biomedicine, EMBC 2009 - Minneapolis, MN, United States Duration: Sep 2 2009 → Sep 6 2009 |
Other
| Other | 31st Annual International Conference of the IEEE Engineering in Medicine and Biology Society: Engineering the Future of Biomedicine, EMBC 2009 |
|---|---|
| Country | United States |
| City | Minneapolis, MN |
| Period | 9/2/09 → 9/6/09 |
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ASJC Scopus subject areas
- Cell Biology
- Developmental Biology
- Biomedical Engineering
- Medicine(all)
Cite this
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Neurophysiology study of early visual processing of face and non-face recognition under simulated prosthetic vision. / Yang, Yuan; Guo, Hong; Tong, Shanbao; Zhu, Yisheng; Qiu, Yihong.
Proceedings of the 31st Annual International Conference of the IEEE Engineering in Medicine and Biology Society: Engineering the Future of Biomedicine, EMBC 2009. IEEE Computer Society, 2009. p. 3952-3955 5333672.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
TY - GEN
T1 - Neurophysiology study of early visual processing of face and non-face recognition under simulated prosthetic vision
AU - Yang, Yuan
AU - Guo, Hong
AU - Tong, Shanbao
AU - Zhu, Yisheng
AU - Qiu, Yihong
PY - 2009/1/1
Y1 - 2009/1/1
N2 - Behavioral researches have shown that the visual function can be partly restored by phosphene-based prosthetic vision for the non-congenital blinds. However, the early visual processing mechanisms of phosphene object recognition is still unclear. This paper aimed to investigate the electro-neurophysiology underlying the phosphene face and non-face recognition. The modulations of latency and amplitude of N170 component in the event-related potential (ERP) were analyzed. Our preliminary results showed that (1) both normal and phosphene face stimuli could elicit prominent N170; nevertheless, phosphene stimuli caused notable latency delay and amplitude suppression on N170 compared with normal stimuli and (2) under phosphene non-face stimuli, a slight but significant latency delay occurred compared with normal stimuli, while amplitude suppression was not observed. Therefore, it was suggested that (1) phosphene perception caused a disruption of the early visual processing for non-canonical images of objects, which was more profound in phosphene face processing; (2) the face-specific processing was reserved under prosthetic vision and (3) holistic processing was the major stage in early visual processing of phosphene face recognition, while part-based processing was attenuated due to the loss of the details.
AB - Behavioral researches have shown that the visual function can be partly restored by phosphene-based prosthetic vision for the non-congenital blinds. However, the early visual processing mechanisms of phosphene object recognition is still unclear. This paper aimed to investigate the electro-neurophysiology underlying the phosphene face and non-face recognition. The modulations of latency and amplitude of N170 component in the event-related potential (ERP) were analyzed. Our preliminary results showed that (1) both normal and phosphene face stimuli could elicit prominent N170; nevertheless, phosphene stimuli caused notable latency delay and amplitude suppression on N170 compared with normal stimuli and (2) under phosphene non-face stimuli, a slight but significant latency delay occurred compared with normal stimuli, while amplitude suppression was not observed. Therefore, it was suggested that (1) phosphene perception caused a disruption of the early visual processing for non-canonical images of objects, which was more profound in phosphene face processing; (2) the face-specific processing was reserved under prosthetic vision and (3) holistic processing was the major stage in early visual processing of phosphene face recognition, while part-based processing was attenuated due to the loss of the details.
UR - http://www.scopus.com/inward/record.url?scp=77951014126&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77951014126&partnerID=8YFLogxK
U2 - 10.1109/IEMBS.2009.5333672
DO - 10.1109/IEMBS.2009.5333672
M3 - Conference contribution
SN - 9781424432967
SP - 3952
EP - 3955
BT - Proceedings of the 31st Annual International Conference of the IEEE Engineering in Medicine and Biology Society
PB - IEEE Computer Society
ER -