Austen Smith

Permanent URI for this collectionhttps://hdl.handle.net/10294/15056

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Browsing Austen Smith by Subject "pseudoneglect"

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    Is there an artistry to lighting? The complexity of illuminating three-dimensional artworks
    (American Psychological Association, 2021) Smith, Austen, K.; Sedgewick, Jennifer, R; Weiers, Bradley; Elias, Lorin, J.
    Painters tend to depict a leftward light source more often in works of art (Mamassian, 2008) and even non-artists will light a painting from the left (McDine, Livingston, Thomas, & Elias, 2011). This bias does not appear to persist across mediums, however, as Sedgewick, Weiers, Stewart, and Elias (2015) found a slight rightward lighting bias when non-artists illuminated three-dimensional (3D) sculptures. Given the unexpected finding from 3D stimuli and considering that the majority of aesthetics research uses stimuli which are two-dimensional (2D), we thought it prudent to attempt a replication of Sedgewick et al.’s findings with a simplified version of the sculpture lighting task. We also used the greyscales task, recruited a group of bilingual native right-to-left (RTL) readers, and made additional comparisons with professionally lit sculptures in native left-to-right (LTR) and RTL reading regions of the world. We found a left lighting bias among LTR professionals and an opposite right lighting bias among RTL professionals. LTR and RTL non-artists both showed no bias for lighting and a leftward bias on the greyscales task. However, both professionals in galleries and non-artists in the lab demonstrate congruency between posing and lighting directions. The attenuation of the leftward lighting bias, which is normally observed, may be related to the complexity of illuminating a sculpture. Illuminating more complex stimuli appears to extinguish the bias in non-artists, whereas the leftward lighting bias persists for more rudimentary stimuli from artists and non-artists alike.
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    Native reading direction influences lateral biases in the perception of shape from shading
    (Taylor & Francis, 2014-12-24) Smith, Austen, K.; Szelest, Izabela; Friedrich, Trista, E.; Elias, Lorin, J.
    Although neurologically normal individuals often exhibit leftward biases of perception and attention, known as pseudoneglect, factors such as lighting, spatial location and native reading direction have been found to modulate these biases. To investigate lighting and spatial biases in left-to-right and right-to-left readers search times were measured in a target finding task where lighting and target locations were manipulated. Target search times under upper-left lighting were significantly shorter than lower-left, upper-right and lower-right lighting among left-to-right readers. Right-to-left readers did not display the same leftward bias, even displaying significantly shorter search times under upper-right lighting than those of left-to-right readers. Significantly shorter search times for targets located in the upper-left quadrant (compared to other quadrants) were observed for left-to-right readers, while search times for upper-right located targets were significantly shorter for right-to-left readers compared to those of left-to-right readers. Participant scan times of stimuli divided into equal quadrants were monitored by an eye-tracking camera. Both groups displayed greater scan times in upper quadrants. These findings suggest that native reading direction modulates spatial and light perception biases resulting in weaker leftward, or a lack of lateral biases among right-to-left readers.