Nonsense Object Stimuli
Nonsense Object Stimuli - Related Videos
02:27
Nonsense-mediated mRNA Decay
0 Views •
2020
The Upf proteins that carry out nonsense-mediated decay (NMD) are found in all eukaryotic organisms, including humans. Each protein has an individual role, but they need to work in collaboration. Upf1 is an ATP-dependent RNA helicase that unwinds the RNA helix. Because Upf1 can unwind any RNA, Upf2 and Upf3 are required to help Upf1 discriminate between nonsense and normal mRNAs. Usually, Upf3 binds to an Exon Junction Complex (EJC) at mRNA splice sites. If a ribosome fully translates the mRNA,...
02:27
Nonsense-mediated mRNA Decay
0 Views •
2023
The Upf proteins that carry out nonsense-mediated decay (NMD) are found in all eukaryotic organisms, including humans. Each protein has an individual role, but they need to work in collaboration. Upf1 is an ATP-dependent RNA helicase that unwinds the RNA helix. Because Upf1 can unwind any RNA, Upf2 and Upf3 are required to help Upf1 discriminate between nonsense and normal mRNAs. Usually, Upf3 binds to an Exon Junction Complex (EJC) at mRNA splice sites. If a ribosome fully translates the mRNA,...
05:43
Applying Incongruent Visual-Tactile Stimuli during Object Transfer with Vibro-Tactile Feedback
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2019
We present a protocol to apply incongruent visual-tactile stimuli during an object transfer task. Specifically, during block transfers, performed while the hand is hidden, a virtual presentation of the block shows random occurrences of false block drops. The protocol also describes adding vibrotactile feedback while performing the motor task.
10:14
Object Substitution Masking
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2023
Source: Laboratory of Jonathan Flombaum—Johns Hopkins University Visual masking is a term used by perceptual scientists to refer to a wide range of phenomena in which in an image is presented but not perceived by an observer because of the presentation of a second image. There are several different kinds of masking, many of them relatively intuitive and unsurprising. But one surprising and important type of masking is called Object Substitution Masking. It has been a focus of research in vision...
14:38
Creating Objects and Object Categories for Studying Perception and Perceptual Learning
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Cited by 12 •
2012
We describe a novel methodology for creating naturalistic 3-D objects and object categories with precisely defined feature variations. We use simulations of the biological processes of morphogenesis and phylogenesis to create novel, naturalistic virtual 3-D objects and object categories that can then be rendered as visual images or haptic objects.
FAQs
Their unfamiliarity helps reduce effects of meanings and experiences attached to known objects. Instead, a participant's response can be examined in relation to controlled visual properties and task experience. This separation allows psychologists to ask whether behavior reflects basic visual processing, learning during the experiment, or both.
By changing shape, color, texture, or the arrangement of parts, researchers can vary one aspect while holding others relatively constant. That design makes it possible to examine which visual features influence perception or attention and whether different arrangements alter later recognition, memory, or categorization performance.
Repeated exposure creates an opportunity for participants to acquire category knowledge about forms they initially do not know. Feedback can connect a particular object with a designated category or association, allowing researchers to track concept learning as experience accumulates. This also distinguishes initial responses from changes produced by learning.
Patterns in participants' responses can reveal how they process, remember, attend to, and organize novel forms. When people classify or associate objects after exposure and feedback, performance can show whether category knowledge has been acquired. Such results connect observable behavior with questions about concept learning, object recognition, and the processes supporting categorization.
A typical study can present controlled objects, ask participants to respond to them, and then provide repeated exposure or feedback tied to categories or associations. Researchers can compare responses across differently shaped, colored, textured, or part-arranged forms. This workflow links stimulus design to controlled tests of perception, attention, memory, and categorization.
In psychology, these stimuli support questions that familiar objects cannot isolate as cleanly because prior meaning and experience may influence responses. They are relevant to research on cognitive development and to investigations of neural mechanisms underlying categorization. Their controlled novelty also helps connect basic visual processing with the later acquisition of concepts and object knowledge.