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. Author manuscript; available in PMC: 2010 Jul 1.
Published in final edited form as: Prog Retin Eye Res. 2009 May 13;28(4):263–288. doi: 10.1016/j.preteyeres.2009.05.001

Figure 9.

Figure 9

Effect of different bin durations on performance for model shown in Figure 4. For long bins (500–1000 ms), performance is reduced because the excitatory and inhibitory components of the biphasic response are averaged together and therefore subtract. For shorter bins, performance improves down to 10 ms (the characteristic time constant), where the transient response fills one bin, allowing its template coefficient to be given greater weight. A data set generated with insufficient trials (not shown) reduces performance for short bins < characteristic time constant. Response to contrast 0.05. trials=200, template=2.