1,084 research outputs found
The role of part structure in the perceptual localization of a shape
No full textThe process of object localization may be accomplished with respect to a particularreference location, such as the center of gravity, COG (eg Vishwanath and Kowler, 2003 VisionResearch 43 1637-1653). Here, we investigated how part structure affects an object's referencelocation. The reference location was evaluated with a measure of the illusory displacement of an internal target element embedded within a larger object (Morgan et al, 1990 Vision Research 30 1793-1810). To examine whether the reference location is different for shapes with part structure, two shapes were tested: circle (small and large; no part structure) and bell (shape with two parts, one larger than the other). Results were examined with respect to two predictions: either the location of an object is based on its shape as a whole, disregarding part structure (ie a single, overall COG), or the parts are processed separately (different COGs).With the circles, the results showed a systematic illusory displacement of the internal target toward the COG. With the bell, the illusion was significantly weaker than with both circles--even though the main part of the bell had the same size as the small circle, and its horizontal axis had the same extent as the large circle. Moreover, the distance judgments for the bell were consistent with a (weaker) reference point being located at the COG of the larger part, rather than at the COG of the entire bell. These results show that the part structure of a shape plays a role in the representation of its location, and that for complex shapes the perceived location of an embedded element depends more on the parts within which it is embedded, rather than on the whole shape.Supported by the Air Force Office of Scientific Research, Grant AF 49620- 02-1-0112, Life Sciences Directorate to Eileen Kowler, and by NSF, Grant BCS-0216944 to Manish Singh.AF 29620-02-1-0112; to Eileen KowlerNSF BCS-0216944; to Manish SinghDenisova, Kristina, Manish Singh, Eileen Kowler, 2006. The definitive, peer-reviewed and edited version of this article is published in Perception, 35, 1073-1087, DOI:10.1068/p5518
Maintaining Nursing Knowledge Using Bibliographic Management Software
No full textKEY POINTS• To engage in evidence-based practice, perioperative nurses should be regularlyaccessing literature on pertinent practice subjects.• Use of bibliographic management software can help nurses sift through databases tofind literature content that meets their needs.NOTICE: this is the author’s version of a work that was accepted for publication in Perioperative Nursing Clinics. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Perioperative Nursing Clinics vol. 7, no. 2 (June 2012), doi:10.1016/j.cpen.2012.02.004.Peer reviewe
Eileen Hendy
No full textPhotograph - Eileen Hendy, member of the Book Sub-Committee, part of the Town of Athabasca 75th Anniversary Committee, Athabasca, Alberta. The Book Sub Committee produced the book "Athabasca Landing: An Illustrated History
Eileen Hendy - 02
No full textPhotograph - Eileen Hendy, member of the Book Sub-Committee, part of the Town of Athabasca 75th Anniversary Committee, Athabasca, Alberta. The Book Sub Committee produced the book "Athabasca Landing: An Illustrated History
Dance the mambo / De John sisters, groupe voc. ; Ray Ellis et son orchestre ; Joe Loco et son orchestre... [et al.]
No full textComprend : Hotta chocolotta / De John sisters, groupe voc. ; avec Ray Ellis et son orchestre ; Moonlight serenade / Joe Loco et son orchestre ; I've got a gal in Kalamazoo / Joe Loco et son orchestre ; avec le trio Victor Aviles, groupe voc. ; Que pasa, my love / Eileen Barton, chant ; Marion Evens et son orchestreBnF-Partenariats, Collection sonore - BelieveContient une table des matière
Cane tray with multicolour base
No full textLong, narrow cane-edged tray made on a Gordon Ellis plastic covered base supplied through the Nottingham Handicraft Company. The base appears to be hardboard covered with sticky-back plastic, dating the tray to the 1960s
Attention during sequences of saccades along marked and memorized paths
No full textAbstractNatural scenes are explored by combinations of saccadic eye movements and shifts of attention. The mechanisms that coordinate attention and saccades during ordinary viewing are not well understood because studies linking saccades and attention have focused mainly on single saccades made in isolation. This study used an orientation discrimination task to examine attention during sequences of saccades made through an array of targets and distractors. Perceptual measures showed that attention was distributed along saccadic paths when the paths were marked by color cues. When paths were followed from memory, attention rarely spread beyond the goal of the upcoming saccade. These different distributions of attention suggest the involvement of separate processes of attentional control during saccadic planning, one triggered by top-down selection of the saccadic target, and the other by activation linked to visual mechanisms not tied directly to saccadic planning. The concurrent activity of both processes extends the effective attentional field without compromising the accuracy, precision, or timing of saccades
Eileen Barrett’s Story of Betty
No full textCanadadeath of childimmigrantNorth VancouvernursingoriginalorphanwidowWorld War II1920’sBritai
The relationship between spatial pooling and attention in saccadic and perceptual tasks
No full textAbstractSaccades aimed at spatially extended targets land reliably at central locations determined by pooling information across the target shape [Melcher, D., & Kowler, E. (1999). Shape, surfaces and saccades. Vision Research, 39, 2929–2946; Vishwanath, D., & Kowler, E. (2003). Localization of shapes: Eye movements and perception compared. Vision Research, 43, 1637–1653]. Previous findings of saccadic errors when attempting to look at a target in the midst of distractors encouraged suggestions that pooling occurs indiscriminately, with little or no influence of a selective filter to eliminate the influence of nearby distractors. To determine the effectiveness of filtering, saccadic localization was studied for saccades made to a set of target elements (discs) interleaved with an equivalent set of distractors of a different color. With such interleaved elements, selection and spatial pooling are constrained to occur over the same spatial region. The results showed that filtering was effective and saccadic landing position was determined mainly by the target elements. Concurrent perceptual judgments made about the same stimuli (estimating the mean size of either target or distractor discs) showed better performance for the target discs than distractors, confirming that perceptual attention was allocated to the set of target elements. These results: (1) support the role of attention in setting the input to the spatial pooling process that guides saccades to spatially extended targets, and (2) show that perceptual judgments of mean value, often thought to impose modest attentional demands, are not immune to the constraints of this pre-saccadic filter
Online_Supplementary_Material – Supplemental material for Using Facebook in Recruiting Kidney Transplant Recipients for a REDCap Study
No full textSupplemental material, Online_Supplementary_Material for Using Facebook in Recruiting Kidney Transplant Recipients for a REDCap Study by Shu-Yu Chung, Eileen D. Hacker, Susan Rawl, Rebecca Ellis, Tamilyn Bakas, Josette Jones and Janet Welch in Western Journal of Nursing Research</p
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