D2.1 Requirements and Specification - CORBYS
D2.1 Requirements and Specification - CORBYS
D2.1 Requirements and Specification - CORBYS
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<strong>D2.1</strong> <strong>Requirements</strong> <strong>and</strong> <strong>Specification</strong><br />
Reason / Comments:<br />
Indicative priority Optional<br />
The tables above show the inputs <strong>and</strong> outputs of the Brain Computer Interface (BCI) subsystem, beyond them<br />
each cognitive-related subtask may need <strong>and</strong>/or provide more information (see following tables).<br />
Subtask 3.5.1 -- Intention of legs motion<br />
Several studies have demonstrated the appearance of EEG activity preceding human voluntary movement.<br />
These signals are associated to motor task preparation, <strong>and</strong> dissimilar from those during the actual execution.<br />
In this subtask we will study the appearance of such kind of signals related to right <strong>and</strong> left legs movement.<br />
Output<br />
Requirement No. BCI5<br />
Name: Intention of legs motion decoding flag<br />
Description: Information about which leg the subject is going to move. It also provides a “no movement”<br />
output value<br />
The intention of legs motion decoding flag output can take the following values: right leg,<br />
left leg <strong>and</strong> no movement.<br />
Reason / Comments:<br />
Indicative priority M<strong>and</strong>atory<br />
Requirement No. BCI6<br />
Name: Decoding accuracy<br />
Description: It provides a numerical value (e.g. a percentage) related to the ability of the BCI subsystem<br />
in detecting the intention of legs motion.<br />
Reason / Comments: Information about the performance in decoding intention of legs motion.<br />
Indicative priority M<strong>and</strong>atory<br />
Subtask 3.5.2 -- Feedback error-related potential<br />
A type of error-related potential is produced when a subject is informed that he has committed an error. The<br />
brain signal following incorrect feedback differs from the signal following the correct one. Based on this<br />
theoretical background the subtask 3.5.2 will analyse the presence of feedback error related potential in a<br />
motor task.<br />
Input<br />
Requirement No. BCI7<br />
Name: Error marker<br />
Description: Feedback stimulus that informs the subject about the correctness of their response to a<br />
specific task<br />
The feedback stimulus presented after the accomplishment of a task, informs the subject<br />
about the correctness of his response <strong>and</strong> therefore provide the critical information that<br />
would enable the error detection. Feedback stimulus, provided by other subsystems, can be<br />
auditory, visual, somatosensory, etc.<br />
The error marker input is a time marker that informs the BCI subsystem when the feedback<br />
is presented to the subject.<br />
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