Neuromagnetic Investigation of Workload and Attention.
Abstract
During the period covered by this report, we made major advances in the technology associated with neuromagnetic measurements. These included the demonstration of the effectiveness of electronic cancellations in reducing unwanted effects of ambient field noise. We also developed a high-precision sensor positioning system, designed and constructed a device for accurately positioning the subject's head under the sensors, and developed advanced software for a multi-sensor system. Experiments during this period included one in which we demonstrated modulation of the EEG coincident with the onset of the N100 component of a visual response to infrequent stimuli presented under the oddball paradigm. We collaborated on another experiment with the Cognitive Psychophysiology Laboratory of the University of Illinois in a study of P300 related to the presentation of alphanumeric stimuli. The results confirmed over earlier findings using abstract visual stimuli, i.e., the equivalent current dipole source of P300 is in or near hippocompal formation.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 24, 1986
- Accession Number
- ADA173155
Entities
People
- Lloyd Kaufman
- Samuel J. Williamson
Organizations
- New York University