1. It is bounded dorsally approximately by the intraparietal sulcus . 2. When sleep-deprived, subjects showed increased activation in the left intraparietal sulcus . 3. This effect is commonly reduced in cases of brain damage to the left intraparietal sulcus . 4. These regions are in the Intraparietal sulcus ( marked in red in the adjacent image ). 5. The third theory involves bimodal cells in the parietal cortex, specifically in the intraparietal sulcus . 6. Activity in the intraparietal sulcus has also been associated with the learning of sequences of finger movements. 7. Below, it is separated from the inferior parietal lobule by the horizontal portion of the intraparietal sulcus . 8. Morphological studies have revealed abnormal lengths and depths of the right intraparietal sulcus in individuals suffering from Turner syndrome. 9. It has been shown that the intraparietal sulcus is activated independently of the type of task being performed with the number. 10. It is bounded approximately by the intraparietal sulcus , the inferior postcentral sulcus, the posterior subcentral sulcus and the lateral sulcus.