Skip to content

Fix Galea gain tracker channels and EEG channel names #787

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
Andrey1994 merged 1 commit into from
Oct 9, 2025
Merged

Fix Galea gain tracker channels and EEG channel names #787

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
2 changes: 1 addition & 1 deletion src/board_controller/brainflow_boards.cpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -189,7 +189,7 @@ BrainFlowBoards::BrainFlowBoards()
{"marker_channel", 28},
{"num_rows", 29},
{"eeg_channels", {9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24}},
{"eeg_names", "F1,C3,F2,Cz,C4,Pz,P4,O2,P3,O1,X1,X2,X3,X4,X5,X6"},
{"eeg_names", "F1,F2,C3,C4,P3,P4,O1,O2,Cz,Pz,X1,X2,X3,X4,X5,X6"},
{"emg_channels", {1, 2, 3, 4, 7, 8}},
{"eog_channels", {5, 6}},
{"other_channels", {25, 26}},
Expand Down
23 changes: 10 additions & 13 deletions src/board_controller/openbci/inc/openbci_gain_tracker.h
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -195,7 +195,7 @@ class GaleaGainTracker : public OpenBCIGainTracker
public:
GaleaGainTracker ()
: OpenBCIGainTracker ({4, 4, 4, 4, 4, 4, 4, 4, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 4, 4,
4, 4, 12, 12}) // 8 EMG + 12 EEG + 4 AUX(EMG) + 2 Reserved
4, 4, 12, 12}) // Channels 1-8: EMG, 9-18: EEG, 19-22: AUX(EMG), 23-24: Reserved
{
channel_letters = std::vector<char> {'1', '2', '3', '4', '5', '6', '7', '8', 'Q', 'W', 'E',
'R', 'T', 'Y', 'U', 'I', 'A', 'S', 'D', 'G', 'H', 'J', 'K', 'L'};
Expand All @@ -213,27 +213,24 @@ class GaleaGainTracker : public OpenBCIGainTracker
if ((config.at (0) == 'o') || (config.at (0) == 'd'))
{
std::copy (current_gains.begin (), current_gains.end (), old_gains.begin ());
// 8 EMG + 12 EEG + 4 AUX(EMG) + 2 Reserved
// Channels 1-8: EMG, 9-18: EEG, 19-22: AUX(EMG), 23-24: Reserved
for (size_t i = 0; i < current_gains.size (); i++)
{
if (i < 8) // EMG channels 0-7
if (i < 8) // Channels 1-8: EMG (indices 0-7)
{
current_gains[i] = 4;
}
else if (i < 20) // EEG channels 8-19
else if (i < 18) // Channels 9-18: EEG (indices 8-17)
{
current_gains[i] = 12;
}
else if (i < 24) // AUX channels 20-23 (4 AUX EMG + 2 Reserved)
else if (i < 22) // Channels 19-22: AUX EMG (indices 18-21)
{
if (i < 22) // AUX EMG channels 20-21
{
current_gains[i] = 4;
}
else // Reserved channels 22-23
{
current_gains[i] = 12;
}
current_gains[i] = 4;
}
else if (i < 24) // Channels 23-24: Reserved (indices 22-23)
{
current_gains[i] = 12;
}
}
}
Expand Down
Loading