Abstract: An improved system and method to acquire physiological information about a state of a subject, such as SPECT and PET information. The system generates a predetermine sequence of pulse signals and combines that sequence with a first physiological signal to generate a time-base signal. The time-base signal is than combined with a second physiological signal. The combined signals are analyzed to determine accurate temporal synchronization of the first and second physiological signals. The system can be generalized to handle more than two physiological signals. Examples of physiological signals can be for example EKG signals, tomography signals, gross-body motion signals, respiratory motion signals, voluntary motion signals, involuntary motion signals and other signals. The analyzed data can be displayed and/or recorded, and provides physiological information about a state of the subject.

Abstract: A computer system which is reconfigurable to provide separate ergonomically advantageous positions for keyboard input and for stylus input. A primary system chassis contains a bay in its underside where a detachable keyboard can be stored. For one-hand stylus input, the keyboard is left in its bay while the display is mounted flat on top of the system chassis. For keyboard input, the keyboard is mounted on the system chassis, and the display is supported at an angle which makes it easily visible to a user typing on the keyboard.