pyntbci.stimulus.make_apa_sequence

pyntbci.stimulus.make_apa_sequence() → ndarray[tuple[int, ...], dtype[_ScalarType_co]]

Make an almost perfect auto-correlation (APA) sequence. APA sequence [7] examples are taken from [8].

Returns:

stimulus – A matrix with an APA sequence of shape (1, n_bits).

Return type:

NDArray

References

[7]

Wolfmann, J. (1992). Almost perfect autocorrelation sequences. IEEE Transactions on Information Theory, 38(4), 1412-1418. DOI: 10.1109/18.144729

[8]

Wei, Q., Liu, Y., Gao, X., Wang, Y., Yang, C., Lu, Z., & Gong, H. (2018). A novel c-VEP BCI paradigm for increasing the number of stimulus targets based on grouping modulation with different codes. IEEE Transactions on Neural Systems and Rehabilitation Engineering, 26(6), 1178-1187. DOI: 10.1109/TNSRE.2018.2837501