| Presentation | 1993/5/28 Effects of Stimulus Parameters on Auditory Mismatch Field Toshiaki Imada, Hari Riitta, Loveless Norman, McEvoy Linda, Sams Mikko, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The auditory mismatch field (MMF) is supposed to reflect a comparison process between an infrequent deviant stimulus and the memory trace left by frequent standard stimuli.Therefore,the MMF amplitude has been thought to depend on the strength of such a trace. We examined this hypothesis in recordings with a 24-channel planer SQUID magnetometer by varying the number of stimuli preceding each deviant,the interdeviant interval (IDI) and the interstimulus interval (ISI) just preceding the deviant (pISI).When a constant IDI was employed and the number of standards between two deviants varied in different sessions,MMF amplitude increased as the number of standards increased.However,MMF did not depend on the number of standards between two deviants when the number varied within a single session and ISI varied as well.MMF decreased slightly when pISI increased from 0.6 to 3.4 s.When IDI increased and the ISI remained constant,MMF amplitude increased.Most results can be explained within the framework of the memory-trace hypothesis of MMF generation.However,the strengthening of the trace seems to be a complex process which is also affected by the temporal features of the stimulus sequence. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | megnetoencephalography / mismatch field / oddball paradigm / auditory cortex / memory trace |
| Paper # | MBE93-19 |
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| Conference Information | |
| Committee | MBE |
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| Conference Date | 1993/5/28(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | ME and Bio Cybernetics (MBE) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Effects of Stimulus Parameters on Auditory Mismatch Field |
| Sub Title (in English) | |
| Keyword(1) | megnetoencephalography |
| Keyword(2) | mismatch field |
| Keyword(3) | oddball paradigm |
| Keyword(4) | auditory cortex |
| Keyword(5) | memory trace |
| 1st Author's Name | Toshiaki Imada |
| 1st Author's Affiliation | NTT Basic Research Laboratory,Nippon Telegraph and Telephone Corporation() |
| 2nd Author's Name | Hari Riitta |
| 2nd Author's Affiliation | Low Temperature Laboratory,Helsinki University of Technology |
| 3rd Author's Name | Loveless Norman |
| 3rd Author's Affiliation | Depertment of Psychology,University of Dundee |
| 4th Author's Name | McEvoy Linda |
| 4th Author's Affiliation | Low Temperature Laboratory,Helsinki University of Technology |
| 5th Author's Name | Sams Mikko |
| 5th Author's Affiliation | Low Temperature Laboratory,Helsinki University of Technology |
| Date | 1993/5/28 |
| Paper # | MBE93-19 |
| Volume (vol) | vol.93 |
| Number (no) | 84 |
| Page | pp.pp.- |
| #Pages | 8 |
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