Results of Experiment 2: relationship of occipital and parietal phosphene thresholds.

<p><b>A.</b> As with Experiment 1, phosphenes elicited from posterior parietal cortex (PPC) had higher thresholds than those from occipital cortex (OCC; <i>P</i><0.00005). <b>B.</b> There was a significant positive correlation (<i>r</i> = 0.581) between thresholds of PPC and OCC phosphenes (<i>P</i><0.01). Error bars represent SEM.