User Reference:Parameter Changes for Version 2
This page describes changes in parameters between prior versions of BCI2000, and Version 2.0.
Rows without notes represent parameters that have been renamed without changing their structure or meaning.
Source Modules | ||
| Name in Version 2 | Name in previous versions | Notes |
|---|---|---|
| ID_System, ID_Amp, ID_Montage | Added for equipment documentation purposes. | |
| SourceCh | SoftwareCh | |
| DataDirectory | FileInitials | |
SignalGeneratorADC (renamed from RandomNumberADC) | ||
| SineChannelY | SineChannel | |
| RandomSeed | DoTrueRandom | Non-null value now specifies random seed for testing purposes. |
| SignalType | SignalType | Enumeration now omits float24 type to match gUSBamp source module's SignalType parameter, 0: int16, 1: int32, 2: float32. |
| TransmitCh | Removed to avoid redundancy (number of values in TransmitChList). | |
| VisualizeTiming | VisualizeRoundtrip | Visualization window now shows block duration, roundtrip, and stimulus delay. |
SignalProcessing | ||
| SpatialFilter | SpatialFilterKernal | |
| NumControlSignals | Chosen automatically to match classifier output. | |
AR Filter | ||
| FirstBinCenter | StartMem + MemBandWidth/2 | Specifying center frequencies appears more intuitive. |
| LastBinCenter | StopMem + MemBandWidth/2 | |
| BinWidth | MemBandWidth | |
| WindowLength | MemWindows | Preferably specified in seconds using an "s" or "ms" suffix to its value. |
| EvaluationsPerBin | MemBandWidth/deltaMem | Avoid accidental misconfigurations, allow for reasonable default value. |
Normalizer (renamed from NormalFilter/StatFilter) | ||
| NormalizerOffsets | XMean, YMean | These are now lists of values, allowing for any number of dimensions in the control signal. |
| NormalizerGains | XGain, YGain | |
| OffsetAdaptation, GainAdaptation | XTrendControl, YTrendControl | |
| BufferLength | SignalWinLth | The length is now given as a time value, i.e. in seconds (if specified with an "s") or blocks (if specified as a raw number). |
| UpdateTrigger | A boolean condition that indicates when offset/gain values should be updated. | |
| BufferConditions | BaselineCfg | Conditions may now be boolean expressions involving State values. |
P3TemporalFilter | ||
| EpochLength | NumSamplesInERP | Consistent with the Normalizer filter, buffer length is now specified as a time value, i.e. in seconds if specified with an "s", or blocks if specified as a raw number. |
| EpochsToAverage | NumERPsToAverage | |
LinearClassifier (renamed from ClassFilter) | ||
| Classifier | MUD, MLR | The Classifier matrix parameter is now a sparse representation of a multiplication matrix. Each row corresponds to a non-null entry, and contains 4 columns: input channel, input element (e.g., frequency), output channel, weight. |
| ClassMode | Retained only previous ClassMode value of 1. | |
Application Modules | ||
| WindowWidth | WinWidth | |
| WindowHeight | WinHeight | |
| WindowLeft | WinXpos | |
| WindowTop | WinYpos | |
| MinRunLength | (TimeLimit)s | Consistently with other time values, this is now given in blocks. Use an optional "s" to indicate a value in seconds. |
StimulusPresentation (renamed from P3AV) | ||
| Stimuli | Matrix | |
| NumberOfSequences | NumberOfSeq | Common parameters are now named consistently across P3 Speller and StimulusPresentation applications. |
| PreSequenceDuration | PreSequenceTime | |
| PostSequenceDuration | PostSequenceTime | |
| StimulusDuration | OnTime | These are now lists of values, allowing to configure durations individually for each stimulus. When there are less entries than stimuli, the last list entry will be used repeatedly. |
| ISIMinDuration | OffTime + MinInterTime | |
| ISIMaxDuration | OffTime + MaxInterTime | |
P3 Speller | ||
| TestMode | P3TestMode | |
| TargetDefinitions | TargetDefinitionMatrix | |
| IconHighlightMode | IconHighlight | |
| IconHighlightFactor | HighlightFactor | |
| InterpretMode | OnlineMode | Common parameters are now named consistently across P3 Speller and StimulusPresentation applications. |
| DisplayResults | ResultDisplay | |
| PreSequenceDuration | PreSetInterval | |
| PostSequenceDuration | PostSetInterval | |
| StimulusDuration | OnTime | |
| ISIMinDuration | OffTime | |
| ISIMaxDuration | ||
| DestinationAddress | DestinationIPAddress | This is actually an IP:port combination. |
| TextWindowLeft | TextWinXpos | Naming consistency with application window properties. |
| TextWindowTop | TextWinYpos | |
| TextWindowWidth | TextWinWidth | |
| TextWindowHeight | TextWinHeight | |
| TextWindowFontName | TextWinFontName | |
| TextWindowFontSize | TextWinFontSize | |
Cursor Task (renamed from D3Box Task) | ||
| ResultDuration | RewardDuration | |
| CameraPos | [CameraX CameraY CameraZ]/32767*100 | Combined into a vector (list of 3 values). We also use the same 0..100 coordinate range throughout. |
| CameraAim | [CameraAimX CameraAimY CameraAimZ]/32767*100 | |
| LightSource | [LightSourceX LightSourceY LightSourceZ]/32767*100 | |
| LightSourceColor | LightSourceR<<16 + LightSourceG<<8 + LightSourceB | Combined into an RGB value. |
| CursorStartPos | [StartCursorX StartCursorY StartCursorZ] | Combined into a vector. |
RGB Colors
Previously, RGB colors followed the binary layout of MS Windows little endian style color values: 0xBbGgRr, such that a value of 0xFF0000 would define a blue color.
This was counterintuitive and different from the convention adopted by the HTML standard.
From Version 2.0, RGB colors follow the HTML convention: 0xRrGgBb, e.g. 0xFF0000 for bright red.