Download Data Acquisition: User`s Manual

Elekta Neuromag
DATA ACQUISITION
CONTENTS
1 Introduction .......................................................................... 1
1.1 Overview ........................................................................................ 1
1.2 Typographical conventions ............................................................ 1
1.3 Software safety .............................................................................. 2
2 Getting Started ..................................................................... 3
2.1 Hardware checklist......................................................................... 3
2.2 Starting the software ...................................................................... 3
2.3 Components of the control program .............................................. 4
2.3.1 The menus ........................................................................ 5
2.4 Closing the software ...................................................................... 6
3 Setting up.............................................................................. 7
3.1 Project............................................................................................ 7
3.2 Subject ........................................................................................... 8
3.2.1 Subject list ......................................................................... 8
3.2.2 Volunteers and patients .................................................... 9
3.3 Acquisition.................................................................................... 11
3.4 Stimuli and triggers ...................................................................... 14
3.4.1 Trigger interfaces and triggering modes ......................... 14
3.4.2 Stimulus sequence .......................................................... 15
3.4.3 Sequence generator........................................................ 16
3.4.4 Loading and saving sequences....................................... 17
3.5 On-line averaging......................................................................... 18
3.5.1 Basics.............................................................................. 18
3.5.2 Online averaging dialog .................................................. 19
3.5.3 Events ............................................................................. 19
3.5.4 Categories ....................................................................... 21
3.5.5 Artefact rejection ............................................................. 23
3.5.6 Noisy and silent channels ............................................... 24
3.5.7 On-line display updates................................................... 24
3.6 Head digitization .......................................................................... 25
3.6.1 Coordinate frames........................................................... 25
3.6.2 Digitization....................................................................... 26
3.6.3 Using five coils ................................................................ 29
3.6.4 String digitization (sweep mode) ..................................... 29
3.7 Gantry position............................................................................. 30
3.8 Saving and restoring settings....................................................... 30
3.9 Setting filters and gains of electric channels................................ 31
4 Experiment preparation ..................................................... 34
4.1 Restricted megacq ....................................................................... 34
4.2 Saving a preparation.................................................................... 34
4.3 Loading a saved preparation ....................................................... 35
5 Acquisition.......................................................................... 36
5.1 Acquisition controls ...................................................................... 36
5.2 Head position indicator ................................................................ 38
NM23065A-B