Title :
Ambulatory physiologic monitoring system supporting EMA with self-administered visual evoked potential recording at randomized intervals
Author :
Ellingson, Roger M. ; Oken, Barry
Author_Institution :
RM Ellingson Design & Dev., LLC, Portland, OR, USA
Abstract :
This paper provides an overview of an ambulatory 24-hour physiologic recording system supporting ecological momentary assessments (EMAs) which include visual evoked potentials (VEPs) in the subject´s normal living environment. The PDA-based system´s EMA methods include oral recording, questionnaire, and reaction-time-type attention testing. This report focuses on the system´s unique capability of subject-administered VEP testing in the remote environment. Results reported include single-subject VEP waveforms recorded in the subject´s home during the evening portion of a 24 hour period at scheduled times the subject was unaware of in advance. The VEP testing paradigm was a 100 trial, Go/NoGo type test. The visual stimuli were presented on the handheld PDA device with wireless stimulus marker trigger information being transmitted to the ambulatory EEG recording unit via a Bluetooth interface. Post-acquisition editing and analysis results demonstrate reliable ambulatory VEPs can be obtained. The system implementation is a further extension of our work investigating the identification of stress-related physiologic marker information in a primary caregiver´s home environment. The demonstrated EMA-based VEP recording capabilities added to our previously reported 24-hour ambulatory data collection platform (CAMAS) open the door to new opportunities supplementing studies in fields such as ambulatory psychophysiology and cognitive-neuroscience.
Keywords :
Bluetooth; electroencephalography; medical information systems; patient monitoring; telemedicine; visual evoked potentials; Bluetooth interface; Go/NoGo type test; PDA-based system EMA methods; ambulatory EEG recording; ambulatory physiologic monitoring system; cognitive-neuroscience; ecological momentary assessments; oral recording; post-acquisition editing; primary caregiver home environment; questionnaire; reaction-time-type attention testing; self-administered visual evoked potential recording; stress-related physiologic marker information; subject-administered VEP testing; time 24 h; visual evoked potentials; wireless stimulus marker; Biomedical monitoring; Electrodes; Electroencephalography; Personal digital assistants; Testing; Visualization; Wireless communication;
Conference_Titel :
Instrumentation and Measurement Technology Conference (I2MTC), 2011 IEEE
Conference_Location :
Binjiang
Print_ISBN :
978-1-4244-7933-7
DOI :
10.1109/IMTC.2011.5944091