Electrophysiological evidence for an early attentional mechanism in visual processing in humans

  title={Electrophysiological evidence for an early attentional mechanism in visual processing in humans},
  author={Francesco Di Russo and Donatella Spinelli},
  journal={Vision Research},
The effect of sustained spatial attention on a task-irrelevant grating displayed in the left visual field was studied by steady-state and transient visual evoked potentials (VEP). For the steady-state experiment, the task irrelevant grating was phase-reversed at different temporal frequencies. In the transient experiment the grating was reversed abruptly at low temporal frequency. In both conditions a target requiring visual attention was presented either in the left or in the right visual… CONTINUE READING


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