Actigraphic measurements that will be obtained by attaching the actigraphic watch device to the individual's non-dominant wrist and operationally defined repeated observational measurements. All measurements will continue through a baseline period and continue through the identified post surgical period. Actigraphic measurements will occur every 30 seconds with brief periods of non-measurement during the actual neurosurgical procedure and periods when the actigraphic device has reached storage capacity (approximately every 22 days) when data is retrieved and the device prepared resume measurements.

Neurosurgical re-section of an incidental large left anterior cranial fossa meningioma