The objective of this research is to better understand the perception of complex acoustical stimuli. The auditory system has the property that incoming sounds are decomposed into different frequency channels. In contrast, our percepts are unified, depending on the integration of information across both frequency and time. The long- term objectives of the proposed research is to understand the integration of information across frequency. Of particular interest is the integration of level and temporal information, two features of broadband sounds encoded in frequency channels. This objective is addressed by comparing the result of psychophysical experiments and optimal statistical models of processing applied at the level of frequency channels. B jointly considering human performance predicted by optimal models, estimates of frequency selectivity for level and temporal tasks may be obtained. Then, the resulting models may be tested using increasingly complex tasks, tasks in which both level and temporal features of broadband stimuli are varied. To the degree that the sensitivity to changes in level and temporal features of broadband sounds are successfully modeled, comparisons with models derived for hearing impaired individuals can follow.
| Lindblom, Eric N; Berman, Micah L; Thrasher, James F (2017) FDA-Required Tobacco Product Inserts & Onserts–and the First Amendment. Food Drug Law J 72:1-25 |
| Xie, Fei; Zhang, Dongjie; Cheng, Lin et al. (2015) Intradermal microbubbles and contrast-enhanced ultrasound (CEUS) is a feasible approach for sentinel lymph node identification in early-stage breast cancer. World J Surg Oncol 13:319 |
| Kuo, Chi-Chien; Lee, Pei-Lung; Chen, Chun-Hsung et al. (2015) Surveillance of potential hosts and vectors of scrub typhus in Taiwan. Parasit Vectors 8:611 |
| Caulfield, Timothy; Burningham, Sarah; Joly, Yann et al. (2014) A review of the key issues associated with the commercialization of biobanks. J Law Biosci 1:94-110 |
| Cao, Xiang; Richards, Virginia M (2012) Enhancement in informational masking. J Speech Lang Hear Res 55:1135-47 |
| Shen, Yi; Richards, Virginia M (2012) Spectral processing of two concurrent harmonic complexes. J Acoust Soc Am 131:386-97 |
| Shen, Yi; Richards, Virginia M (2012) A maximum-likelihood procedure for estimating psychometric functions: thresholds, slopes, and lapses of attention. J Acoust Soc Am 132:957-67 |
| Dai, Huanping; Richards, Virginia M (2011) On the theoretical error bound for estimating psychometric functions. Atten Percept Psychophys 73:919-26 |
| Kidd Jr, Gerald; Richards, Virginia M; Streeter, Timothy et al. (2011) Contextual effects in the identification of nonspeech auditory patterns. J Acoust Soc Am 130:3926-38 |
| Richards, Virginia M; Shub, Daniel E; Carreira, Eva Maria (2011) The role of masker fringes for the detection of coherent tone pips. J Acoust Soc Am 130:883-92 |
Showing the most recent 10 out of 37 publications
