The processing of sequentially presented auditory information was investigated in Reading Delayed (RD) and Non-Reading Delayed (NRD) children through the use of middle latency event-related potentials (MERP's). MERP's from 16 4th and 5th grade RD children were compared to MERP's from 15 2nd and 3rd grade NRD children matched on intelligence and reading level. The children responded to a two tone behavioral sequencing task, then engaged in passive perception of a similar two tone sequence while MERP's were recorded for each tone. Various inter-stimulus intervals (ISI) were used in each task. On the behavioral sequencing task the NRD children performed better at all ISI's (F = 5.78, p $<$.03). MERP recordings from the RD group indicated a shorter latency of the Na waveform generated by the second stimulus at a 75 ms ISI compared to a 150 ms ISI (t = 4.66, p $<$.001) or a 500 ms ISI (t = 2.87, p $<$.01). Furthermore, the latency of the Na peak to the second stimulus was significantly and positively correlated to both groups' performance on the behavioral task, especially at the shortest ISI (r =.45; p $<$.006). These results are taken as an indication of a lack of normal inhibition in the RD group. When presented with a two tone sequence separated by short ISI's, the RD group failed to inhibit processing of the second tone, whereas at longer ISI's they responded in a manner similar to that of the NRD group. / Source: Dissertation Abstracts International, Volume: 52-08, Section: B, page: 4473. / Major Professor: Lloyd Elfner. / Thesis (Ph.D.)--The Florida State University, 1991.
| Identifer | oai:union.ndltd.org:fsu.edu/oai:fsu.digital.flvc.org:fsu_76480 |
| Contributors | Krull, Kevin Ronald., Florida State University |
| Source Sets | Florida State University |
| Language | English |
| Detected Language | English |
| Type | Text |
| Format | 125 p. |
| Rights | On campus use only. |
| Relation | Dissertation Abstracts International |
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