Title :
Modulation of cortical magnetic field responses to speech sounds
Author :
Nagarajan, Srikantan S. ; Houde, John
Author_Institution :
Sci. Learning Corp., Berkeley, CA, USA
Abstract :
Our objectives were to systematically investigate the response sensitivity of auditory cortex to speech. We document the modulation of cortical responses to speech by additive background noise and by self-production. Significant magnetic fields modulations were observed in bilateral auditory cortices in response to recorded speech sounds presented below 0 dB signal-to-noise ratio (SNR). Additionally, cortical responses were found to be modulated by self-production
Keywords :
biological effects of fields; hearing; magnetoencephalography; speech; additive background noise; auditory cortex; bilateral auditory cortices; cortical magnetic field responses; magnetic fields modulations; modulation; recorded speech sounds; response sensitivity; self-production; signal-to-noise ratio; Acoustic noise; Background noise; Magnetic fields; Magnetic modulators; Magnetic noise; Magnetic recording; Natural languages; Sensor arrays; Signal to noise ratio; Speech enhancement;
Conference_Titel :
[Engineering in Medicine and Biology, 1999. 21st Annual Conference and the 1999 Annual Fall Meetring of the Biomedical Engineering Society] BMES/EMBS Conference, 1999. Proceedings of the First Joint
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-5674-8
DOI :
10.1109/IEMBS.1999.802540
