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Computational Intelligence and Neuroscience
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Computational Intelligence and Neuroscience
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2021
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Article
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Fig 26
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Research Article
The Role of Visual Features in Text-Based CAPTCHAs: An fNIRS Study for Usable Security
Figure 26
Temporal HbO and HbR averages observed for the first 30 seconds of CAPTCHA blocks with difficulty level 2 for the line feature.