Noninvasive transcranial doppler ultrasound face and object recognition testing system

摘要

A non-invasive method and system to determine face and object processing in a human subject, said method with high temporal resolution, user-friendly and portable, including steps of obtaining a subject's baseline cerebral blood flow velocity in cerebral arteries using a transcranial Doppler ultrasound instrument with sample volumes focused on cerebral vessels on both sides using two probes placed on the temples and calculating laterality index for both arteries. Simultaneously, testing the subject with face and object processing tasks presented on the screen of a digital computer and using a computer input peripheral device while simultaneously monitoring the mean blood flow velocity during each stage of the task in real-time. Processing the acquired data using a microprocessor operatively connected to a computer workstation for image retrieval.