Processing of Sensory Information is Affected by BCI Feedback Being Perceivedстатья
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Дата последнего поиска статьи во внешних источниках: 2 декабря 2020 г.
Аннотация:Feedback is an important part of the BCI loop providing a user with the information regarding whether or not cognitive efforts were successful. It is believed that the feedback affects user’s learning ability to control BCI. In the field of neurorehabilitation, the feedback of a BCI loop is associated with facilitation of neuroplasticity. However, such methods as motor imagery, tactile stimulation and movements observation have a therapeutic effect per se which makes it unclear whether any facilitation is associated with a BCI loop. The aim of the present study is to fill such a lacuna of knowledge. The answer can help us to propose a new paradigm of neurorehabilitation instruments to recover the mobility of patients paralyzed after a stroke. P300-BCI is another popular paradigm which is based on visual evoked potentials and being commonly used in BCI spellers. In our study, we examined whether the feedback in P300-BCI loop could facilitate motor cortex activity. We have shown that primary motor cortex TMS-induced MEPs was higher in amplitude for sensory information perceived as a feedback than for perceived per se, while the MO and TS per se did not affect the excitability of the motor cortex. We conclude that the BCI-feedback context influenced the perception of visual and tactile information. These results can be used to build a new generation of BCI for rehabilitation since it is known that the ability to control P300-BCI for post-stroke patients remains at a high level.