AI Article Synopsis
- The study used magnetoencephalography to measure brain activity and understand when the brain starts to integrate predictions with sensory information during visual processing.
- Researchers presented auditory cues (tones) to create predictions, followed by congruent or incongruent images of musical keys to see how mismatches were processed.
- They found a mismatch signal in the brain's visual areas occurring 100-200 ms after the images were shown, suggesting that predictive-sensory integration begins around 100 ms post-image presentation.
Article Abstract
Brain activity was measured by magnetoencephalography to investigate the spatiotemporal stage of visual processing at which predictive and sensory integration begins. We examined the consequences of a visual mismatch between preliminary prediction and incoming stimulus. Following auditory cues (1000- and 1250-Hz tones) for prediction, congruent and incongruent images, pictures of two musical keys, were presented to volunteers. When they predicted visual inputs on the basis of preceding auditory cues, we detected a mismatch signal for predictive-sensory incongruities in the striate and extrastriate areas for 100-200 ms after image presentation. As this signal reflects a compatibility analysis, we propose that the integration process begins in these areas approximately 100 ms after image presentation.
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| http://dx.doi.org/10.1097/WNR.0b013e3282f240d8 | DOI Listing |
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