Skip to main content
. Author manuscript; available in PMC: 2011 Sep 1.
Published in final edited form as: Eur J Neurosci. 2010 Aug 16;32(6):1040–1048. doi: 10.1111/j.1460-9568.2010.07366.x

Figure 1.

Figure 1

Schematic representation of the cueing task. A fixation LED was presented at the straight-ahead position for a variable time (1000-1700 msec). The monkey was expected to look at the stimulus and to maintain fixation until it was extinguished. During the period of fixation a 100 μsec click cue was presented from transducers located at (±30°,0°). In the valid condition, which comprised ∼75% of trials of this type, the cue predicted the location of the ensuing target, whereas in the invalid condition, which comprised the remaining 25% of trials of this type, it did not. The time between the onset of the cue and onset of the target, the cue to target onset asynchrony (CTOA), was randomly varied between 1-800 msec. Successful completion of a trial required accurate orienting, not speedy responses.