Presentation Title: Manipulating attention strategy alters patterns of neural gain in human cortex
Section: The Nano World II
Location: McCardell Bicentennial Hall, 216
Date & Time: Friday, April 19, 2013 - 11:15am - 11:30am
Over the last several decades, spatial attention has been shown to influence the activity of neurons in visual cortex in a number of different ways. These observations have inspired different theories of how attention influences perception and behavior. We used measures of brain activity (electroencephalography or EEG) to assess steady-state visual evoked potentials (SSVEPs) in human subjects. Our data show that different patterns of neural modulation do not reflect fundamentally different neural mechanisms, but instead reflect changes in how people distribute their attention. This finding confirms predictions made by the normalization model of attention (NMA) that changes in the size of the stimulus and the distribution of attentional focus explain neural responses in visual cortex.
Type of Presentation: Individual oral
Presentation Area: Neuroscience
Number of presenters:
Presenter(s): Rungratsameetaweemana, Nuttida (Un)
Major(s): Neuroscience and Mathematics
Class Year(s): 2014
Sponsor(s): Arndt, Jason D.
Dept(s): Neuroscience Program, Department of Psychology