Visual Oddball Paradigm
Visual Oddball Paradigm - Related Videos
14:33
Event-related Potentials and the Oddball Task
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2023
Source: Laboratories of Jonas T. Kaplan and Sarah I. Gimbel—University of Southern California Given the overwhelming amount of information captured by the sensory organs, it is crucial that the brain is able to prioritize the processing of certain stimuli, to spend less effort on what might not be currently important and to attend to what is. One heuristic the brain uses is to ignore stimuli that are frequent or constant in favor of stimuli that are unexpected or unique. Therefore, rare events...
13:08
Measurement of Fronto-limbic Activity Using an Emotional Oddball Task in Children with Familial High Risk for Schizophrenia
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Cited by 1 •
2015
This paper describes how to use the emotional oddball task and fMRI to measure brain activation in children and adolescents at familial high risk for schizophrenia (FHR). FMRI was used to measure differences in fronto-striato-limbic regions during an emotional oddball task. Children with FHR exhibited abnormal functional activation during adolescence.
09:15
Creating the Minimal Group Paradigm
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2023
Source: Julian Wills & Jay Van Bavel—New York University The study of intergroup relations, such as prejudice, conflict, and discrimination, has always been a central topic in social psychology. Does discrimination stem from competition with other groups, a history of conflict, or derogatory stereotypes? Despite an abundance of real-world examples, the ingredients that lead to intergroup discrimination are often unclear. To help solve this problem, a group of psychologists created "minimal...
06:15
Using the Visual World Paradigm to Study Sentence Comprehension in Mandarin-Speaking Children with Autism
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Cited by 4 •
2018
We present a protocol to examine the use of morphological cues during real-time sentence comprehension by children with autism.
06:07
Exploring Infant Sensitivity to Visual Language using Eye Tracking and the Preferential Looking Paradigm
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Cited by 7 •
2019
Eye tracking studies using a preferential looking paradigm can be used to study infants' emerging understanding of, and attention to, their external visual world.
FAQs
The infrequent event is informative because it violates the participant’s expectation created by repeated standard images. This contrast makes it possible to examine how the mind detects change, directs attention toward an unexpected stimulus, and updates an internal representation of the ongoing sequence. Increasing or decreasing the distinction between predictable and rare events can therefore affect observed discrimination and attention.
The P300 is an event-related potential associated with the brain’s response to relevant or unexpected visual events. In this paradigm, its timing and strength provide physiological evidence about attention allocation and expectation updating, complementing behavioral measures. Researchers can compare the neural response with reaction time and accuracy to study how efficiently participants process rare targets.
Instructions determine whether participants actively identify or count the rare images, which changes the demands placed on attention and stimulus discrimination. A participant who must respond to targets provides behavioral measures such as reaction time and accuracy, while counting also reflects detection across the sequence. These task requirements help align the paradigm with specific questions about cognitive processing.
The paradigm can be used to investigate several linked processes, including perception of visual differences, selective attention to infrequent events, cognitive control during target detection, memory for task-relevant information, and novelty processing. Because behavioral performance and event-related potentials offer complementary outcomes, the design can connect observable responses with changes in how the brain handles expectations.
A typical procedure presents participants with a sequence containing frequent standard images and infrequent deviant images. Participants then identify or count the designated targets while the study records outcomes such as reaction time and accuracy. When neural recording is included, event-related potentials such as the P300 can be examined alongside behavior to characterize attention and expectation updating.
Reaction time indicates how quickly participants respond to designated visual targets, whereas accuracy indicates whether they correctly detect or discriminate those events. Together, these measures show how effectively participants perform the task under conditions of frequent standards and rare deviants. Interpreting them with neural measures can clarify whether differences involve behavioral performance, attention allocation, or expectation updating.
Its controlled contrast between predictable standards and unexpected visual events supports investigations of perception, attention, cognitive control, memory, and novelty processing. The same framework can also help examine clinical differences in information processing by comparing behavioral performance and event-related potentials. This combination makes the method useful for relating visible task behavior to underlying patterns of cognitive and neural response.