Rogers, Daniel ORCID: https://orcid.org/0000-0002-0513-3940 (2024) The Importance of Image Properties in the Perception and Neural Representation of Faces. PhD thesis, University of York.
Abstract
The overarching aim of this thesis, is to explore the role of visual information in the perception and recognition of faces. The experiments in this thesis use a combination of behavioural, computational and neuroimaging approaches to ask how facial representations are formed and what image properties are critical for perception and recognition. The thesis begins (Chapter 3) by investigating the process of generating a view-invariant representation from view-specific inputs. Using behavioural, neuroimaging and computational approaches, the results provide evidence of an intermediate view-symmetric representation. The emergence of view-symmetric representations from view-specific inputs was evident for canonical, but not non-canonical rotations of the face. Chapter 4 asked what visual information in the face (shape or texture) is important when making identity judgments. Here, it was shown that whilst texture properties are the dominant cue for familiar face recognition, shape properties provide unique and important contributions when making identity judgments, with the faceselective areas showing an equal sensitivity to both properties. The importance of shape and texture was further explored in Chapter 5, which showed that there was an intermediate band of image dimensions that were fundamental for familiar face recognition and for learning new faces. In contrast, earlier and later image dimensions of ambient face images were not important for recognition or learning. The final study of the thesis (Chapter 6) explored how image properties influence other aspects of face perception. The results showed that early image dimensions were critical for judgments of gaze, whereas different intermediate bands of image dimensions were important for judgements of gender and expression. Taken together, the findings presented in this thesis address the questions of how image properties are important for the perception and neural representation of face identity and whether the same or different image properties are important for other aspects of face perception.
Metadata
Supervisors: | Andrews, Timothy |
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Keywords: | Faces, fMRI, Learning, PCA |
Awarding institution: | University of York |
Academic Units: | The University of York > Psychology (York) |
Depositing User: | Mr Daniel Rogers |
Date Deposited: | 22 Apr 2024 13:12 |
Last Modified: | 22 Apr 2024 13:12 |
Open Archives Initiative ID (OAI ID): | oai:etheses.whiterose.ac.uk:34728 |
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