Auditory-nerve and energy-detection models of temporal summation in hearing: a theoretical and experimental investigation

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dc.contributor.advisor Professor R. J. Irwin en Kemp, Simon en 2007-12-13T01:15:22Z en 2007-12-13T01:15:22Z en 1979 en
dc.identifier.citation Thesis (PhD--Psychology)--University of Auckland, 1979. en
dc.identifier.uri en
dc.description.abstract Experimental extensions and theoretical explanations of a psychoacoustic experiment concerning temporal summation of human hearing are investigated. The experiment has the well-established result that, ceteris paribus, a brief tone burst is more readily letected than a brief gap in a tone. Two models, one based on the neuroelectrical activity of the auditory nerve and one on energy-detection theory, are presented and developed in detail: both are shown capable of predicting the result of the bursts and gaps experiment. Seven experiments are reported. Experiment 1 found the reaction time to the start of a faint tone embedded in noise generally shorter than that to its end. Experiment 2 examined the effect of rise/decay time on the detectability of brief bursts of, or gaps in, broadband noise: when the energy change was constant, 1here was no effect except at long (100 msec) rise/decay times. Experiments 3 and 4 assessed the detectability of bursts of, and gaps in, a tone embedded in noise where energy change to noise power per cycle was constant but duration varied. The data demonstrate that the effect of duration on detectability was different for burst than gap events, a result predicted by both models. Experiment 5 showed that, when the energy in and duration of a tone burst in noise were constant but the temporal distribution of the burst energy varied, detectability remained unchanged. The repetition rate of noise bursts and gaps in continuous noise was varied without effect on detectability in Experiment 6. Bursts, however, were consistently mere detectable than gaps. Experiment 7 compared the detectability of increments and decrements of a continuous tone embedded in noise. The quantitative predictions of the two models are compared with the data resulting from Experiments 3, 5, and 7. The qualitative results of these and the other experiments are also discussed in terms of their theoretical implications. Taken all together, the experiments do not definitely favour either model over the other. en
dc.format Scanned from print thesis en
dc.language.iso en en
dc.publisher ResearchSpace@Auckland en
dc.relation.ispartof PhD Thesis - University of Auckland en
dc.relation.isreferencedby UoA218717 en
dc.rights Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. en
dc.rights.uri en
dc.title Auditory-nerve and energy-detection models of temporal summation in hearing: a theoretical and experimental investigation en
dc.type Thesis en Psychology en The University of Auckland en Doctoral en PhD en
dc.subject.marsden Fields of Research::380000 Behavioural and Cognitive Sciences::380100 Psychology en
dc.rights.holder Copyright: The author en
pubs.local.anzsrc 17 - Psychology and Cognitive Sciences en Faculty of Science en

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