PHGY 314 Lecture Notes - Lecture 12: Ocular Dominance, Anatomical Terms Of Location, List Of Fictional Medicines And Drugs
31 Oct 2016
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Posner paradigm: way to measure attention: use invalid/valid cues, valid cue/stim inside attending zone. Invalid stim outside attending zone: behavior success higher for those subjected to valid cues. Some technical terms relevant to experimental: saccade = eye movement, raster plot = display firing pattern for a specific neuron. Every row = different trial: electrode arrays = measure many neurons at once. Attention"s effects on neural firing: attention enhances neural responses to behaviorally relevant stims in visual neurons, subjects had to look for stim matching colour of initial dot, attending to a specific area of image. If specific area of image flashed a matching colour bar to the initial dot, more. Ap"s get fired: attention incr = r^2 value (correlation) decr, reduce correlated noise between neurons in a population, ex. in visual cortex, makes neurons in a population more independent, correlated noise = correlations between neurons in the popl.
