Sympathetic and parasympathetic innervation of pupillary dilation during sustained processing.

@article{Steinhauer2004SympatheticAP,
  title={Sympathetic and parasympathetic innervation of pupillary dilation during sustained processing.},
  author={Stuart R. Steinhauer and Greg J. Siegle and Ruth Condray and Misha Pless},
  journal={International journal of psychophysiology : official journal of the International Organization of Psychophysiology},
  year={2004},
  volume={52 1},
  pages={
          77-86
        }
}
The contributions of separate sympathetic and parasympathetic pathways to pupillary dilation during a sustained processing task were studied through environmental and pharmacological manipulations. In Experiment 1, 22 healthy volunteers (11 female) performed a serial Subtract 7 task while pupil diameter was recorded both during moderate room light and in darkness. In a control for verbalization, subjects performed an easier Add 1 task. In all conditions, pupil diameter increased significantly… CONTINUE READING

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