dc.contributor.author	Brown, James Michael	en
dc.contributor.committeemember	Braun, Michael T.	en
dc.contributor.committeemember	Deater-Deckard, Kirby	en
dc.contributor.committeemember	Cate, Anthony D.	en
dc.contributor.department	Psychology	en
dc.date.accessioned	2017-06-13T19:43:47Z	en
dc.date.adate	2016-01-28	en
dc.date.available	2017-06-13T19:43:47Z	en
dc.date.issued	2015-12-18	en
dc.date.rdate	2016-01-28	en
dc.date.sdate	2015-12-23	en
dc.description.abstract	Empirical object recognition research indicates that objects are represented and perceived as hierarchical part-whole arrangements that vary according to bottom-up and top-down biases. An ongoing debate within object recognition research concerns whether local or global image properties are more fundamental for the perception of objects. Similarly, there is also disagreement about whether the visual system is guided by holistic or analytical processes. Neuroimaging findings have revealed functional distinctions between low and higher-level visual processes across lateral occipital-temporal cortex (LOC), primary visual cortices (V1/V2) and ventral occipital-temporal cortex. Recent studies suggest activations in these object recognition areas and others, such as the fusiform face area (FFA) and extra-striate body area (EBA), are collinear with activations associated with the perception scenes and buildings. Together, this information warrants the focus of the proposed study: to investigate the neural correlates of object recognition and perceived size. During the experiment subjects tracked a fixation stimulus while simultaneously being presented with images of shape contours and faces. Contours and face stimuli subtended small, medium and large visual angles in order to evaluate variance in neural activation across perceived size. In the present study visual areas were hypothesized to modulate as a function of visual angle, meaning that the part-whole relationships of objects vary with their perceived size.	en
dc.description.degree	Master of Science	en
dc.identifier.other	etd-12232015-223707	en
dc.identifier.sourceurl	http://scholar.lib.vt.edu/theses/available/etd-12232015-223707/	en
dc.identifier.uri	http://hdl.handle.net/10919/78079	en
dc.language.iso	en_US	en
dc.publisher	Virginia Tech	en
dc.rights	In Copyright	en
dc.rights.uri	http://rightsstatements.org/vocab/InC/1.0/	en
dc.subject	Object Recognition	en
dc.subject	fMRI	en
dc.subject	Perceived Size	en
dc.title	Perceived Size Modulates Cortical Processing of Objects	en
dc.type	Thesis	en
dc.type.dcmitype	Text	en
thesis.degree.discipline	Psychology	en
thesis.degree.grantor	Virginia Polytechnic Institute and State University	en
thesis.degree.level	masters	en
thesis.degree.name	Master of Science	en

Perceived Size Modulates Cortical Processing of Objects

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