Psychophysical, Physiological and Behavioural Studies in Hearing: Proceedings of the 5th International Symposium on Hearing Noordwijkerhout, The Netherlands April, 8–12, 1980

Experimentists in various disciplines, such as anatomy, physics, chemistry, physiology, psychophysics and psychology, have been carrying out their studies in order to increase our knowledge and understanding of sensory perception. To profit maximally from the results, obtained from these different viewpoints each should take the work of the others into account. The need for intensive communication is, therefore, ever present. In 1969, in the field of auditory research, this need resulted in P10mp's initiative to organizing an international symposium "Frequency analysis and periodicity perception in hearing". Considering the lively discussions and the numerous references in literature to the proceedings of this Driebergen symposium, the meeting clearly fulfilled its need. It was clear at the time that this sort of symposium should be held regularly. This resulted in meetings in 1972 (Eindhoven), 1974 (Tutzing) and 1977 (Keele). At the meeting in Keele it was agreed that the next one should be held in 1980, again in the Nether­ lands. With regard to the program, we decided to carryon the - now expande- tradition of including anatomy, physiology, psychophysics and the development of models in the program, but to pay more attention to the behavioural aspects of hearing at the same time. As a result, some contributions on animal behaviour have been included in the program. One of the great advantages of this sort of symposium is, that one has the opportunity of paying immediate attention to topics that are of current interest at the time.

Table of Contents:
Section I. Cochlear Functioning.- Dimensionality of cochlear waves.- An active cochlear model with negative damping in the partition: comparison with Rhode’s ante- and post-mortem observations.- Two possible mechanisms for the second cochlear filter.- The electrophysiological profile of the organ of Corti.- Observations on the generation mechanism of stimulus frequency acoustic emissions — two tone suppression.- The combination tone, 2f1-f2, in psychophysics and ear-canal recording.- On the mechanism of the evoked cochlear mechanical response.- Cochlear mechanics as the possible cause of binaural diplacusis?.- Latencies of stimulated acoustic emissions in normal human ears.- Functional identification of auditory neurons based on stimulus-event correlation.- A cochlear micromechanic model of transduction.- Quantative model analysis of basilar membrane motion.- Phase response versus best frequency in caiman auditory nerve discharges.- Section II. Frequence- and Time-Resolution.- The use of psychophysical tuning curves to measure frequency selectivity.- Psychophysical frequency resolution in the cat studied with forward masking.- Chronic anoxia and auditory nerve fibres.- Some psychophysical measurements of frequency processing in the greater horseshoe bat.- Altered psychophysical tuning curves following exposure to a noise band with steep spectral skirts.- The effect of age on auditory filter shape.- Auditory filter bandwidth derived from direct masking of complex signals.- Effects of noise exposure on frequency selectivity in normal and hearing-impaired listeners.- Narrow-band AP studies in normal and recruiting human ears.- Effects of acute noise traumata on cochlear response times in cats.- Narrow-band analysis: a link between single-fibre and whole-nerve data.-AP-tuning curve and narrow-band AP following acoustic overstimulation.- Decay of masking and frequency resolution in sensorineural hearing-impaired listeners.- Suppression in the time domain.- Adaptation of masking.- Very rapid adaptation in auditory ganglion cells.- Temporal modulation transfer functions for intensity modulated noise bands.- Section III. Lateral Suppression and Distortion Products.- A psychoacoustical approach to pulsation threshold.- Detection cues in forward masking.- Pulsation patterns of two-tone stimuli.- Two-tone suppression and intermodulation distortion in the cochlea: effect of outer hair cell lesions.- Psychophysical three-tone suppression.- Some results of a band-widening experiment obtained with a lateralization paradigm.- Investigation of monaural phase effects by measuring binaural masking thresholds.- Cubic difference tone level and phase dependence on frequency difference and level of primaries.- Responses of cat cochlear nerve fibres to cubic difference tones.- Psychophysical tuning curves for the difference tones f2-f1 and 2f1-f2.- Section IV. Intensity Coding and Dynamic Range.- Suppression effects in the responses of auditory-nerve fibres to broadband stimuli.- On the signal processing potential of high threshold auditory nerve fibers.- “Phase-locking” of cochlear fibres and the problem of dynamic range.- Dynamic response of single auditory-nerve fibres: some effects of intensity and time.- Spectral resolution of comb-filtered noise by cochlear fibers in the cat: preliminary results of comparisons with their rate-level functions.- Loudness of noise in the presence of tones: measurements and nonlinear model results.- Section V. Pitch Perception.- Pitch strength and masking patterns of low-pass noise.- Influence of masking noiseon the pitch of complex tones.- Toward understanding pitch perception: probems, concepts and solutions.- The relation between pitch and frequency in complex tones.- Temporal properties of the pitch and pitch strength of ripple noise.- The effect of stimulus duration on the prominence of pitch.- Atonal periodicity sensation for comb filtered noise signals.- Section VI. Binaural Hearing.- Lateralization of complex waveforms.- Lateralization of high-frequency stimuli on the basis of time and intensity.- Binaural interaction in the cat inferior colliculus: phydiology and anatomy.- Note on the model of binaural interaction in impaired auditory system.- Modelling of interaural time and intensity difference discrimination.- Binaural time processing and time-intensity trading.- Role of frequency selectivity in localization and lateralization.- Interactions between two-tone complexes and masking noise.- Subjective laterality of noise-masked binaural targets.- A new “look” at auditory space perception.- Section VII. Psychoacoustical and Phonetical Interrelations.- Relations between auditory functions.- Psychoacoustical and phonetic measures of temporal processing in normal and hearing-impaired listeners.- Reduced speech intelligibility and its psychophysical correlates in hearing-impaired subjects.- Relations between hearing loss, maximal word discrimination score and width of psychophysical tuning curves.