Visual Stimuli Presentation
Visual Stimuli Presentation - Related Videos
05:36
Central and Divided Visual Field Presentation of Emotional Images to Measure Hemispheric Differences in Motivated Attention
0 Views •
2017
This study compared central versus divided visual field presentations of emotional images to assess differences in motivated attention between the two hemispheres. The late positive potential (LPP) was recorded using electroencephalography (EEG) and event-related potentials (ERPs) methodologies to assess motivated attention.
05:07
Using Looming Visual Stimuli to Evaluate Mouse Vision
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Cited by 12 •
2019
To examine mouse vision, we conducted a looming test. Mice were placed in a large square arena with a monitor on its ceiling. The looming visual stimulus consistently evoked freezing or flight reactions in the mice.
08:45
A Dual Task Procedure Combined with Rapid Serial Visual Presentation to Test Attentional Blink for Nontargets
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2014
This paper describes a novel dual task procedure combined with Rapid Serial Visual Presentation to look at attentional blink at varied stimulus onset asynchronies. This experimental procedure differed from others in that it tested attentional blink for nontargets.
05:48
How to Build a Dichoptic Presentation System That Includes an Eye Tracker
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Cited by 13 •
2017
We recently proposed a method that allows dichoptic visual stimulus presentation and binocular eye tracking simultaneously1. The key is the combination of an infrared eye tracker and the corresponding infrared-transparent mirrors. This manuscript provides an in depth protocol for initial setup and everyday operation.
01:25
Self-Presentation
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2025
Self-presentation is a fundamental aspect of social interaction, shaping both how others perceive individuals and how they view themselves. This dynamic process influences behaviors in various social settings, often leading people to adjust their appearance, speech, and demeanor to align with their desired identity. While self-presentation can be deliberate or unconscious, it plays a critical role in interpersonal relationships and self-perception.Forms of Self-PresentationSelf-presentation can...
FAQs
Changing one stimulus feature at a time allows researchers to relate specific properties of visual input to differences in neural activity or behavior. Luminance and contrast address intensity relationships, while orientation and spatial frequency probe responses to pattern structure. Comparing responses across these controlled conditions helps characterize how the visual system represents incoming information.
Stimulus duration and delivery timing determine when visual information becomes available for processing and when a recorded response can be evaluated. Consistent timing helps researchers relate sensory events to activity measured with EEG, fMRI, electrophysiology, or eye tracking. It also supports comparisons among conditions by reducing uncertainty about the relationship between presentation and response.
Experiments can hold image properties constant while varying the conditions under which participants view them, then compare behavioral or neural responses. Eye tracking can indicate where visual sampling occurs, whereas EEG, fMRI, or electrophysiology can show associated neural activity. This combination helps examine whether response differences reflect sensory processing, attentional selection, or both.
Researchers select the stimulus form and calibrate its delivery on a screen or through a projector, then specify properties such as luminance, contrast, orientation, spatial frequency, color, motion, and duration. They also plan how responses will be recorded. Maintaining consistent presentation conditions makes differences across trials interpretable and connects each measured response to a defined visual input.
The paradigm can be combined with eye tracking, EEG, fMRI, or electrophysiology, depending on the response researchers want to measure. Eye tracking captures patterns of visual sampling, while the other methods provide measures of neural activity. Pairing controlled stimuli with these recordings allows investigators to compare sensory conditions with changes in brain or behavioral responses.
These experiments support studies of perception, attention, and visual coding by linking controlled changes in images, patterns, colors, or motion to measured responses. They also contribute to models of brain function and to investigations of sensory processing in neurological disorders. The resulting comparisons can clarify how visual information is handled under different experimental conditions.