Reserved marker and variable names
Reserved marker names
The following markers have special meaning and will be inserted by BrainStream in certain situations. These marker names may not be used for other markers. However, users can define their own actions for these markers.
BS_INIT : at startup, BrainStream inserts this marker; it will always be the first processed marker. It may be useful to associate functions that initialize your experiment with this marker, for example the initialization of certain variables.
BS_END : at shutdown, BrainStream inserts this marker; it will always be the last processed marker. It may be useful to associate functions that finalize your experiment with this marker, for example saving certain variables (Note: former BS_EXIT).
BS_ABORT : this marker triggers alternative shutdown, but still guarantees a normal closing of acquisition related items. It can be used if you want to skip the actions defined for BS_END (Note: former BS_QUIT).
Reserved variable names
Users can create any number of user defined variables. The names must not be equal to any of the reserved names in use by BrainStream. These reserved variable names are listed below:
|Reserved variable name||Why it is reserved|
|marker||might get confused with marker column in exp.def.table|
|funcs||might get confused with function column in exp.def.table|
|feval||might get confused with feval column in exp.def.table|
|client||might get confused with client column in exp.def.table|
|looptick||might get confused with looptick column in exp.def.table|
|name||name of marker (and assoicated event)|
|time||time of execution referred to number of acquired samples|
|hdr||acquisition/file header info|
|trial||information about selected data|
|data||requested raw data, trial information, samplerate|
|BRAINSTREAM||used by BrainStream internally|
|in||specifies incoming module variables|
|out||specifies outgoing module variables|
|trace_vars||Keeps a list of traced variables (output in logfile)|
|brainstreamversion||the version of BrainStream that was used to run the experiment|