An ERP study for the degrees of the difficulty in visual search |
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| Authors: | Ma Yanyun Wang Yan and Luo Yuejia |
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| Institution: | 1. China National Institute for Educational Research, Beijing 100088, China; 2. Institute of Psychology, Chinese Academy of Sciences, Beijing 100101, China; 3. State Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University, Beijing 100875, China |
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| Abstract: | The present study mainly probed the relationships between ERP components and the degrees of difficulty in visual search. Three experimental and one controlled conditions were randomly selected. Results showed that the P1, N1, and P2 amplitudes and latencies had no significant differences among the three experimental and one controlled conditions, and the ERP waveforms of low perceptual load of visual search were different from that of high perceptual load. These results might indicate that the latencies and amplitudes of initial P1, N1 and P2 in high and low perceptual load conditions were almost the same. The ERP waveforms of parallel search were very different from that of serial search, and the ERP waveforms of serial search were very similar. The P3 amplitudes increased as the degrees of the difficulty in visual search decreased. |
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| Keywords: | event-related potentials (ERP) visual search parallel search serial search |
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