03280nas a2200229 4500008004100000022001400041245012300055210006900178260001200247300001000259490000700269520254700276653002402823653003202847653002402879653002002903100002102923700002002944700001902964700001902983856004803002 2012 eng d a1095-957200aDynamics of electrocorticographic (ECoG) activity in human temporal and frontal cortical areas during music listening.0 aDynamics of electrocorticographic ECoG activity in human tempora c07/2012 a841-80 v613 a

Previous studies demonstrated that brain signals encode information about specific features of simple auditory stimuli or of general aspects of natural auditory stimuli. How brain signals represent the time course of specific features in natural auditory stimuli is not well understood. In this study, we show in eight human subjects that signals recorded from the surface of the brain (electrocorticography (ECoG)) encode information about the sound intensity of music. ECoG activity in the high gamma band recorded from the posterior part of the superior temporal gyrus as well as from an isolated area in the precentral gyrus was observed to be highly correlated with the sound intensity of music. These results not only confirm the role of auditory cortices in auditory processing but also point to an important role of premotor and motor cortices. They also encourage the use of ECoG activity to study more complex acoustic features of simple or natural auditory stimuli.

10aauditory processing10aelectrocorticography (ECoG)10ahigh gamma activity10asound intensity1 aPotes, Cristhian1 aGunduz, Aysegul1 aBrunner, Peter1 aSchalk, Gerwin uhttp://www.ncbi.nlm.nih.gov/pubmed/22537600