4. Conclusion
Subjects can differentiate between upward and downward moving spectral envelope patterns within a circumscribed range of spectral profiles and drift rates. The range for accurate performance appears to be consistent with spectral resolution in the periphery and the receptive field characteristics found in auditory cortex. The presence of multiple peaks in the spectral profile helps discrimination at low sweep rates, while at higher rates discrimination is better if only one moving peak is present. In conclusion, these experiments have shown that subjects are sensitive to the spectrotemporal envelope of stimuli in the absence of meaningful fine structure, within the range of spectral peak densities and sweep rates characteristic of speech.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Brechman, A., Baumgart, F., and Scheich, H., 2001, Sound-level-dependent representation of frequency modulations in human auditory cortex: A low-noise fMRI study. J. Neurophysiol. 87: 423–433.
Darwin, C.J., and Carlyon, R. P., 1995, Auditory grouping. In Hearing, (B. C. J. Moore, ed.), Academic Press.
Glasberg, B. R., and Moore, B. C. J., 1990, Derivation of auditory filter shapes from notched noise data. Hear. Res. 47: 103–138.
Gordon, M., and Poeppel, D., 2001, Inequality in identification of direction of frequency change (up vs. down) for rapid frequency modulated sweeps. ARLO 3: 29–34.
Hauser, M. D., 1996, The Evolution of Communication, MIT Press.
Kowalski, N., Depireux, D., and Shamma, S., 1996, Analysis of dynamic spectra in ferret primary auditory cortex, J. Neurophysiol. 76: 3503–3523.
Miller, L. M., Escabi, M. A., Read, H. L., and Schreiner, C. E., 2002, Spectrotemporal receptive fields in the lemniscal auditory thalamus and cortex. J. Neurophysiol. 87: 516–527.
Moore, B. C. J., and Sek, A., 1998, Discrimination of frequency glides with superimposed random glides in level. J.. Acoust Soc. Am. 104: 411–421.
Pardo, P. J., and Sams, M., 1993, Human auditory cortex responses to rising versus falling glides. Neuroscience Letters, 159: 43–45.
Schreiner, C. E., and Calhoun, B. M., 1994, Spectral envelope coding in cat primary auditory cortex: distribution of distributed excitation. Aud. Neurosci. 1: 39–61.
Sek, A., and Moore, B. C. J., 1999, Discrimination of frequency steps linked by glides of various durations. J. Acoust Soc. Am. 106: 351–359.
Shamma, S. A., Versnel, H., and Kowalski, N., 1995, Ripple analysis in the ferret primary auditory cortex. J. Aud. Neurosci. 1: 233–254.
Supin, A. Y., Popov, V. V., Milekhina, O. N., and Tarakanov, M. B., 1998, Ripple density resolution for various rippled-noise patterns. J. Acoust. Soc. Am. 103: 2042–2050.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2005 Springer Science+Business Media, Inc.
About this paper
Cite this paper
Denham, S.L. (2005). Perception of the Direction of Frequency Sweeps in Moving Ripple Noise Stimuli. In: Syka, J., Merzenich, M.M. (eds) Plasticity and Signal Representation in the Auditory System. Springer, Boston, MA . https://doi.org/10.1007/0-387-23181-1_31
Download citation
DOI: https://doi.org/10.1007/0-387-23181-1_31
Publisher Name: Springer, Boston, MA
Print ISBN: 978-0-387-23154-9
Online ISBN: 978-0-387-23181-5
eBook Packages: Biomedical and Life SciencesBiomedical and Life Sciences (R0)