The Experts below are selected from a list of 201 Experts worldwide ranked by ideXlab platform
Christopher B. Currie - One of the best experts on this subject based on the ideXlab platform.
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The role of the saccade target object in the perception of a visually stable world
Perception & Psychophysics, 2000Co-Authors: Christopher B. Currie, George W. Mcconkie, Laura A. Carlson-radvansky, David E. IrwinAbstract:Although the Proximal Stimulus shifts position on our retinae with each saccade, we perceive our world as stable and continuous. Most theories of visual stability implicitly assume a mechanism that spatially adjusts perceived locations associated with the retinal array by using, as a parameter, extraretinal eye position information , a signal that encodes the size and direction of the saccade. The results from the experiment reported in this article challenge this idea. During a participant’s saccade to a target object, one of the following was displaced:the entire scene, the target object, or the background behind the target object. Participants detected the displacement of the target object twice as frequently as the displacement of the entire background. The direction of displacement relative to the saccade also affected detectability. We use a new theory, the saccade target theory (McConkie & Currie, 1996), to interpret these results. This theory proposes that retinal (as opposed to extra-retinal) factors, primarily those concerning the saccade target object, are critical for the detection of intrasaccadic Stimulus shifts.
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Visual stability across saccades while viewing complex pictures
Journal of experimental psychology. Human perception and performance, 1996Co-Authors: George W. Mcconkie, Christopher B. CurrieAbstract:As people examine their world, the Proximal Stimulus changes position on their retinae with every saccade, but they perceive the world as being stable. This phenomenon of visual stability was explored by making changes in natural, full-color pictures during selected saccades as observers examined them in preparation for a recognition test. In Experiment 1, the pictures were displaced up, down, left, or right by 0.3, 0.4, or 1.2 degrees. In Experiment 2, the pictures were expanded or contracted by 10% or 20%. As a secondary task, subjects pressed a button when a change was detected. Three results from previous studies with simpler stimuli did not generalize. Evidence suggests that subjects' detection of image changes primarily involves the use of local information in the region of the eyes' landing position. A saccade target theory of visual stability is proposed.
George W. Mcconkie - One of the best experts on this subject based on the ideXlab platform.
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The role of the saccade target object in the perception of a visually stable world
Perception & Psychophysics, 2000Co-Authors: Christopher B. Currie, George W. Mcconkie, Laura A. Carlson-radvansky, David E. IrwinAbstract:Although the Proximal Stimulus shifts position on our retinae with each saccade, we perceive our world as stable and continuous. Most theories of visual stability implicitly assume a mechanism that spatially adjusts perceived locations associated with the retinal array by using, as a parameter, extraretinal eye position information , a signal that encodes the size and direction of the saccade. The results from the experiment reported in this article challenge this idea. During a participant’s saccade to a target object, one of the following was displaced:the entire scene, the target object, or the background behind the target object. Participants detected the displacement of the target object twice as frequently as the displacement of the entire background. The direction of displacement relative to the saccade also affected detectability. We use a new theory, the saccade target theory (McConkie & Currie, 1996), to interpret these results. This theory proposes that retinal (as opposed to extra-retinal) factors, primarily those concerning the saccade target object, are critical for the detection of intrasaccadic Stimulus shifts.
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Visual stability across saccades while viewing complex pictures
Journal of experimental psychology. Human perception and performance, 1996Co-Authors: George W. Mcconkie, Christopher B. CurrieAbstract:As people examine their world, the Proximal Stimulus changes position on their retinae with every saccade, but they perceive the world as being stable. This phenomenon of visual stability was explored by making changes in natural, full-color pictures during selected saccades as observers examined them in preparation for a recognition test. In Experiment 1, the pictures were displaced up, down, left, or right by 0.3, 0.4, or 1.2 degrees. In Experiment 2, the pictures were expanded or contracted by 10% or 20%. As a secondary task, subjects pressed a button when a change was detected. Three results from previous studies with simpler stimuli did not generalize. Evidence suggests that subjects' detection of image changes primarily involves the use of local information in the region of the eyes' landing position. A saccade target theory of visual stability is proposed.
Fiona Macpherson - One of the best experts on this subject based on the ideXlab platform.
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Taxonomising the senses
Philosophical Studies, 2010Co-Authors: Fiona MacphersonAbstract:I argue that we should reject the sparse view that there are or could be only a small number of rather distinct senses. When one appreciates this then one can see that there is no need to choose between the standard criteria that have been proposed as ways of individuating the senses—representation, phenomenal character, Proximal Stimulus and sense organ—or any other criteria that one may deem important. Rather, one can use these criteria in conjunction to form a fine-grained taxonomy of the senses. We can think of these criteria as defining a multidimensional space within which we can locate each of the senses that we are familiar with and which also defines the space of possible senses there could be.
Johannes H.f. Bult - One of the best experts on this subject based on the ideXlab platform.
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Effects of pulsation rate and viscosity on pulsation-induced taste enhancement: new insights into texture-taste interactions.
Journal of Agricultural and Food Chemistry, 2011Co-Authors: Kerstin Martha Mensien Burseg, Sara Camacho, Johannes H.f. BultAbstract:Oral stimulation with high-tastant concentrations that are alternared with low-tastant concentrations or water rinses (pulsatile stimulation) results in taste intensity ratings that are higher than continuous stimulation with the same average tastant concentration. This study tested the combined effects of taste pulsation rate and viscosity on pulsation-induced taste enhancement in apple juice. According to a tastant-kinetics hypothesis, less pulsation-induced taste enhancement is expected at enhanced pulsation rates in the high-viscous Proximal Stimulus compared to lower viscous stimuli. High-concentration sucrose apple juice pulses and low-concentration sucrose apple juice intervals were alternated at different pulsation periods (pulse + interval in seconds) every 2.5 s (period length = 5 s) or every 1.25 s (period length = 2.5 s). Pulsed stimuli were presented at two viscosity levels by the addition of pectin (0 and 10 g/L). Sweetness intensities of pulsed stimuli were compared to a continuous referenc...
Kerstin Martha Mensien Burseg - One of the best experts on this subject based on the ideXlab platform.
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Effects of pulsation rate and viscosity on pulsation-induced taste enhancement: new insights into texture-taste interactions.
Journal of Agricultural and Food Chemistry, 2011Co-Authors: Kerstin Martha Mensien Burseg, Sara Camacho, Johannes H.f. BultAbstract:Oral stimulation with high-tastant concentrations that are alternared with low-tastant concentrations or water rinses (pulsatile stimulation) results in taste intensity ratings that are higher than continuous stimulation with the same average tastant concentration. This study tested the combined effects of taste pulsation rate and viscosity on pulsation-induced taste enhancement in apple juice. According to a tastant-kinetics hypothesis, less pulsation-induced taste enhancement is expected at enhanced pulsation rates in the high-viscous Proximal Stimulus compared to lower viscous stimuli. High-concentration sucrose apple juice pulses and low-concentration sucrose apple juice intervals were alternated at different pulsation periods (pulse + interval in seconds) every 2.5 s (period length = 5 s) or every 1.25 s (period length = 2.5 s). Pulsed stimuli were presented at two viscosity levels by the addition of pectin (0 and 10 g/L). Sweetness intensities of pulsed stimuli were compared to a continuous referenc...
