Rapid task-related plasticity of spectrotemporal receptive fields in primary auditory cortex

Applications and robotic implementations of auditory processing

Physiological basis of Auditory Streaming in Auditory Cortex

Spectrotemporal analysis in the auditory cortex

Functional organization of early auditory system

Stereausis processing of binaural time-delays

Harmonic templates in pitch perception

VLSI Cochlea Model Chip

Spectrotemporal analysis in the auditory cortex

Understanding the functional organization of the auditory cortex has been the main focus of our experimental research. In pursuit of this goal, several methodologies were developed based on systems-identification concepts to enable rapid and relatively comprehensive measurement of cortical spectro-temporal receptive fields (STRF). Subsequent studies explored the topographic distribution of STRF features in different cortical fields, its ability to predict responses to novel stimuli, and its utility in characterizing nonlinear interactions and precisely-timed firings.

The STRF has now become one of the standard descriptors of neuronal selectivity, one that can be employed to characterize processes and phenomena well beyond those conceived of at its inception. For instance, the STRF is now used as an efficient indicator of adaptive change in cortical cell spectral tuning and dynamics induced by behavioral demands, as elaborated above. Furthermore, the insights gained from the detailed analysis of recorded STRFs in AI have led us to the development of detailed computational models of auditory cortical processing which form the backbone of much ongoing algorithmic development and applications. These include the assessment of speech intelligibility, models of auditory scene analysis, and the analysis of various auditory percepts such as timbre, pitch, and localization in the mid-plane.

Last updated: August 21, 2012

Designed by Shin Chang