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<TITLE>Re: [psychology-visionlist] vision group</TITLE>
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<FONT FACE="Calibri, Verdana, Helvetica, Arial"><SPAN STYLE='font-size:11pt'>Hi all,<BR>
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Just to let you know that Will Curran will be giving a talk in the School this Wednesday. Will is planning to arrive some time around 2pm and if you would like to talk to him about your research, let me know. After his talk we are going to the Johnson arms for beers and food, so please join us there too. <BR>
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Best,<BR>
Tim<BR>
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</SPAN></FONT><BLOCKQUOTE><FONT FACE="Calibri, Verdana, Helvetica, Arial"><FONT SIZE="4"><SPAN STYLE='font-size:14pt'><B>School of Psychology External Research Seminar <BR>
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</B></SPAN></FONT><B><SPAN STYLE='font-size:11pt'>Date & Time<BR>
</SPAN></B><SPAN STYLE='font-size:11pt'>Wednesday 25 March at 4pm until 5pm (Refreshments will be available in the committee room (room B35) starting at 3.30pm)<BR>
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<B>Place<BR>
</B>School of Psychology, A1<BR>
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<B>Host<BR>
</B>Tim Ledgeway<BR>
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<B>Speaker<BR>
</B>William Curran (Queen’s University Belfast)<BR>
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<B>Title<BR>
</B>The Many Directions of Time<BR>
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<B>Abstract<BR>
</B>Accurately encoding the duration and temporal order of events is essential for survival and important to everyday activities, from holding conversations to driving in fast flowing traffic. Although there is a growing body of evidence that the timing of brief events (< 1s) is encoded by modality-specific mechanisms, the nature of such mechanisms is poorly understood. The talk will address recent research on the properties of visual timing mechanisms, with a focus on their likely location and the frame of reference within which they operate. On the question of location, there is disagreement on whether the duration of brief visual events is encoded by cortical or pre-cortical mechanisms; research implicating cortical mechanisms in the duration encoding of sub-second visual events will be discussed. There is also robust disagreement regarding the frame of reference – retinotopic or spatiotopic – within which visual timing mechanisms operate; I will present experimental results that shore up the retinotopic position. The talk will then address a model of duration encoding which has recently gained traction – the channel-based model. I will present experimental data that are inconsistent with the channel-based model, but are consistent with the view that perceived duration is a signature of neural coding efficiency and is correlated with stimulus-specific neural response magnitude.<BR>
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</SPAN></FONT><BLOCKQUOTE><FONT FACE="Calibri, Verdana, Helvetica, Arial"><SPAN STYLE='font-size:11pt'><B>All welcome!<BR>
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<BR>
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Professor Tim Ledgeway<BR>
Chair of Vision Research<BR>
School of Psychology<BR>
University of Nottingham<BR>
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Tel: +44 (0) 115 846 7343<BR>
Fax: +44 (0) 115 951 5324<BR>
<FONT COLOR="#0000FF"><U><a href="http://www.psychology.nottingham.ac.uk/research/vision/txl/home.html">http://www.psychology.nottingham.ac.uk/research/vision/txl/home.html</a><BR>
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