The flanker task (Eriksen & Eriksen, ) requires (spatial) selective attention and executive control. In this task, irrelevant stimuli have to be inhibited in order to. In the flanker task, the subject is required to move a lever in a particular direction. Which direction is required in condition B? a) Left b) Right. Besides the Stroop and Simon paradigm, the Eriksen Flanker paradigm is one of the three popular tasks to study effects of conflicting stimulus.

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Download The PsyToolkit code zip file. The third task that is largely focused on is the Simon or spatial compatibility task.

Flanker Task – Cognition Lab

The arrow version of the flanker test has also been evaluated as a method of detecting impairment due to alcohol and drugs in drivers at the roadside, [14] demonstrating the importance of selective attention skills to spatial abilities such as vehicle operation.

This process leads to an interaction called the Gratton effect, which is the finding of a lower interference effect after an incongruent trial compared to the effect after a congruent trial. The save line of the Eriksn experiment script determines what is being saved in the data output file.

Tasj psychiatric and neurological conditions also affect performance on flanker tasks. Introduction The flanker taskalso known as the Eriksen flanker task, was designed in the early s by Eriksen and Eriksen.

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Tqsk Wikipedia, the free encyclopedia. By using this site, you agree to the Terms of Use and Privacy Policy. Then, that measured conflict is used to enhance the amount of control the participant has on the next trial.

Of course, you can extent the code to add those features of the original study.

On this first trial trial n the incongruent stimulus presented will lead to an increase in conflict detected by driksen ACC.


A continuous flow conception and experimental results”. Acute administration of antihistamine or alcohol severely impairs CRT in test measures, a deficit which Ramaekers et al.

cognitive fun!

Eriksenwho first published the task inand also for the flanker stimuli that surround the target. In this task, you need to respond with the A or L key of your keyboard. Choice reaction times CRTs or RTs taek then recorded and compared between congruent and incongruent conditions. A variety of factors have been shown to affect subject’s performance on flanker tasks.

The ACC is a frontal brain structure responsible for a wide variety of autonomic functions. British Journal of Psychiatry. Various forms of the task are used to measure information processing and selective attention.

The three attentional networks: Eevaluation of a small group intervention in prekindergarten and kindergarten children. More recent work in this area has used neurophysiological measures such as event-related potentials [11] or imaging techniques such as fMRI.

A version of the Eriksen Flanker Task involving arrows as stimuli can be found and taken here. They proposed a continuous flow model of perception in which information is processed in parallel for different stimulus elements, and accumulates over time until sufficient information is available to determine a response.

Pages with DOIs inactive since Perception and Psychophysics, 16 Conflict scores are computed egiksen subtracting the erikssn condition from the slower condition for each of the attention concepts: If you want to upload the zipfile into your PsyToolkit account, make sure the file is not automatically uncompressed some browsers, especially Mac Safari, by default uncompress zip files.

Cognitive tests: Eriksen flanker test

In this example, you will see 5 letters appear above the fixation point, but you must only respond to the central letter which is above the fixation point. In this task, the stimulus, erilsen a word, letter, or symbol, is shown on the right or left side of the computer screen.

The flanker task here is slightly different from the original flanker task from Eriksen and Eriksen for various practical reasons this version is just a bit easier. Earlier work had used visual search[9] but because these tasks involve an active scan of the environment to identify the target stimulus, this experimental design made it difficult to separate the effects of distraction from the effects of the search process.


The flankers could be arrows pointing in the same direction as the target congruent the opposite direction incongruent or squares neutral. The non-sedating antihistamine loratidine had no effect foanker any of the measures studied.

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The Quarterly Journal of Experimental Psychology. Like most of the paradigms in this library, it is popular and there are many variants of the original. Journal of Experimental Psychology. Moderate exerciseconversely, has been shown to improve performance on flanker tests, [17] suggesting efficiency of cognitive control operates constructively with physical activity.

To measure how conflicting information affects choice response speed, different conditions are introduced:. A direct comparison of two competing accounts”. Click here to run a demo of the flanker task.

If there is a mismatch between the flanking letters their response and the response required by the central letter, we speak of a “incongruent” or “incompatible” condition. Mixed Focus — Single Focus task switching. The word can either be congruent, which would mean the word would match the font color, such as the word “blue” in blue font color, or it can be incongruent where the word would not match the font color like the word “purple” in yellow font color.

The study used an on-the-road driving tests, and several laboratory tests including the letter version of the Eriksen task to assess the effects of two antihistamines and alcohol on driving skills.

Retrieved from ” https: In PsyToolkit, the data output file is simply a textfile. Acta Psychologica Submitted manuscript.

The Eriksen Flanker Paradigm measures the effect of conflicting information within a stimulus set.

This implementation uses arrows or fishes as stimulus material.