Subject: New paper on From: Margaret Mortz <mmortz@xxxxxxxx> Date: Wed, 18 Apr 2012 16:23:39 -0700 List-Archive:<http://lists.mcgill.ca/scripts/wa.exe?LIST=AUDITORY>--20cf307813b696c1d204bdfc59fb Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable New paper http://www.nature.com/nature/journal/vaop/ncurrent/full/nature11020.html Selective cortical representation of attended speaker in multi-talker speech perception Nima Mesgarani <#auth-1>1</nature/journal/vaop/ncurrent/full/nature11020.html#a1>& Edward F. Chang <#auth-2>1</nature/journal/vaop/ncurrent/full/nature11020.html#a1>"Here, using multi-electrode surface recordings from the cortex of subjects engaged in a listening task with two simultaneous speakers, we demonstrate that population responses in non-primary human auditory cortex encode critical features of attended speech: speech spectrograms reconstructed based on cortical responses to the mixture of speakers reveal the salient spectral and temporal features of the attended speaker, as if subjects were listening to that speaker alone" and "We find that task performance is well predicted by a rapid increase in attention-modulated neural selectivity across both single-electrode and population-level cortical responses. These findings demonstrate that the cortical representation of speech does not merely reflect the external acoustic environment, but instead gives rise to the perceptual aspects relevant for the listener=92s intended goal." Where and how might the "the attention-modulated neural selectivity" act? Margaret --20cf307813b696c1d204bdfc59fb Content-Type: text/html; charset=windows-1252 Content-Transfer-Encoding: quoted-printable New paper<br><a href=3D"http://www.nature.com/n">http://www.nature.com/n</a= ><font style=3D"font-family:georgia,serif" size=3D"2">ature/journal/vaop/nc= urrent/full/nature11020.html<br></font><h1 style=3D"font-family:georgia,ser= if" class=3D"article-heading"> <font>Selective cortical representation of attended speaker in multi-talker= speech perception</font></h1><h1 style=3D"font-family:georgia,serif" class= =3D"article-heading"><font><a class=3D"name" href=3D"#auth-1"><span class= =3D"fn">=A0Nima Mesgarani</span></a><sup><a href=3D"/nature/journal/vaop/nc= urrent/full/nature11020.html#a1">1</a></sup></font><font>& <a class=3D"= name" href=3D"#auth-2"><span class=3D"fn">Edward F. Chang</span></a><sup><a= href=3D"/nature/journal/vaop/ncurrent/full/nature11020.html#a1">1</a></sup= ></font></h1> "Here, using multi-electrode surface recordings from the cortex of sub= jects engaged in a listening task with two simultaneous speakers, we demons= trate that population responses in non-primary human auditory cortex encode= critical features of attended speech: speech spectrograms reconstructed ba= sed on cortical responses to the mixture of speakers reveal the salient spe= ctral and temporal features of the attended speaker, as if subjects were li= stening to that speaker alone"<br> <br>and<br><br>"We find that task performance is well predicted by a r= apid increase in attention-modulated neural selectivity across both single-= electrode and population-level cortical responses. These findings demonstra= te that the cortical representation of speech does not merely reflect the e= xternal acoustic environment, but instead gives rise to the perceptual aspe= cts relevant for the listener=92s intended goal."<br> <br>Where and how might the=A0 "the attention-modulated neural selecti= vity"=A0 act?<br><br>Margaret<br> --20cf307813b696c1d204bdfc59fb--