Methods for the treatment of CNS damage are described, and include inducing in a subject in need of such treatment, a therapeutically effective amount of functional electronic stimulation sufficient to evoke patterned movement in the subject’s muscles, the control of which has been affected by the CNS damage. The mandrel has a mandrel shaft with a longitudinal axis, a plurality of mandrel arms extending from the mandrel shaft, and at least one expansion element disposed upon a respective each of the mandrel arms. In another application, significant events are detected in a signal obtained by a surveillance device, such as a video camera or microphone. Therefore, the present invention can reduce the power consumption and allow a multi-level read to be implemented on an actual array with a simple sense amplifier structure step-by-step. The CMOS image sensor converts the analog signal into a digital signal using a pipelined analog to digital converter.