MoBI Lab

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This page (under construction) will be the homepage for all MoBI lab activities.

For comments and suggestions, please use MoBI discussion page.

Contents

An Introduction

MoBILABbrowser.jpeg MoBILAB multi-stream browser screen shot showing a review of an SCCN two-person MoBI experiment on 'hand mirroring'
SCCN has developed a state-of-the-art mobile brain and body imaging (MoBI) laboratory facility at UCSD. This laboratory space was designed to conduct simultaneous brain imaging and behavioral monitoring while subjects freely move in a large space with minimal restrictions. The experimental space spans 750 square feet (25’ x 30’) and is equipped to deliver auditory and visual stimuli while simultaneously recording subject behavior across a wide range of measurement modalities. Auditory stimuli are generated by a 20.1 channel surround sound system with custom software to control the sound spatialization. Video stimuli can be independently projected on each of the four walls or displayed on four flat screen monitors that can be placed in custom configurations throughout the lab space. Furthermore, subjects can interact with the stimulus environment using a range of response devices including keyboards and mice as well as through any of the behavioral measurement modalities in the lab. For example, motion capture data from subject movements can be used to generate audio and visual stimuli in real-time.

Brain activity can be imaged at high electrode densities in freely moving subjects using the BioSemi active electrode EEG data acquisition system. A single subject can be recorded with up to 256 EEG channels and two interacting subjects can be recorded simultaneously, in a daisy-chained configuration, with 128 electrodes on each subject. Also physiological measures such as respiration and Galvanic skin response can be directly incorporated into the BioSemi EEG data stream.

The MoBI lab was designed to capture subject behavior in synchrony with the brain EEG activity. Subject movements and interactions can be recording by video cameras placed throughout the laboratory. Multiple microphones placed around the room and wireless lapel microphones placed on subjects can record vocal interactions. A 20 camera PhaseSpace motion capture system monitors the motion of up to 120 active LED sensors at sampling rates up to 480 Hz with sub-millimeter resolution. These markers can be placed in almost unlimited configurations, which allows this system to adapt to fit the needs of almost any experimental paradigm. For examples, the PhaseSpace system has the capability to track multiple, closely interacting subjects simultaneously without confusing marker identities. In conjunction with motion capture, biomechanical forces generated by the subject can be measured on a balance platform.


SCCN Experimental Guidelines

  • This page contains a descriptive list of the four phases of running experiments, including guidelines that will help experimenters move through the process smoothly and efficiently.


For information on LSL and data recording please see: LSL wiki

Project Destinations


Troubleshooting

MoBI Troubleshooting

  • This page contains a list of solutions to commonly encountered problems/errors using Biosemi, PhaseSpace, DataSuite, Video recording, or the Projectors. If you do not find a solution on this page, email mobi@sccn.ucsd.edu

Forms

To access Wufoo protocol sheets and submitted questionnaires online go to https://sccn.wufoo.com/login.

Login: mobi_users@sccn.ucsd.edu
Password: Ask the SRAs
  • Under the Forms tab reside the subject questionnaires for individual studies
  • Under the Reports tab reside the protocol sheets (EEG data collection logs) for individual studies

SCCN MoBI Lab Protocol Sheet

  • Fill out this form for EVERY data collection session. It includes information on the subjects you are running, notes on setup/malfunctions, and notes on data blocks collected.

SCCN Lab Scheduling Form

  • Use this form to request testing time, technical pilots, pilots, and experiment sessions.
  • Testing time and technical pilots will not be scheduled more than a week in advance though requests can be made up to 3 weeks in advance.

SCCN Experiment Description Form

  • Use this form to provide a description of your study, subject recruitment criteria, and hardware/software needs.
  • It must be submitted before requesting a pilot or experiment session.

SCCN EEG Equipment Log

  • Fill this form out every time you check-out EEG equipment (amplifiers, batteries, receivers, electrode cables) if you are taking it without the assistance of an SRA.

SCCN Participant Information Form

  • Use this form for each subject participant's information prior to recording.