02575nas a2200289 4500008004100000022001400041245014200055210006900197260001200266300001400278490000800292520157400300653003401874653003001908653002701938653001101965653002201976653001101998100002802009700001602037700002502053700002102078700002102099700002402120700002402144856011702168 2023 eng d a1432-145900aTowards clinical application of implantable brain-computer interfaces for people with late-stage ALS: medical and ethical considerations.0 aTowards clinical application of implantable braincomputer interf c03/2023 a1323-13360 v2703 a

Individuals with amyotrophic lateral sclerosis (ALS) frequently develop speech and communication problems in the course of their disease. Currently available augmentative and alternative communication technologies do not present a solution for many people with advanced ALS, because these devices depend on residual and reliable motor activity. Brain-computer interfaces (BCIs) use neural signals for computer control and may allow people with late-stage ALS to communicate even when conventional technology falls short. Recent years have witnessed fast progression in the development and validation of implanted BCIs, which place neural signal recording electrodes in or on the cortex. Eventual widespread clinical application of implanted BCIs as an assistive communication technology for people with ALS will have significant consequences for their daily life, as well as for the clinical management of the disease, among others because of the potential interaction between the BCI and other procedures people with ALS undergo, such as tracheostomy. This article aims to facilitate responsible real-world implementation of implanted BCIs. We review the state of the art of research on implanted BCIs for communication, as well as the medical and ethical implications of the clinical application of this technology. We conclude that the contribution of all BCI stakeholders, including clinicians of the various ALS-related disciplines, will be needed to develop procedures for, and shape the process of, the responsible clinical application of implanted BCIs.

10aAmyotrophic Lateral Sclerosis10abrain-computer interfaces10aElectroencephalography10aHumans10aSelf-Help Devices10aSpeech1 aVansteensel, Mariska, J1 aKlein, Eran1 avan Thiel, Ghislaine1 aGaytant, Michael1 aSimmons, Zachary1 aWolpaw, Jonathan, R1 aVaughan, Theresa, M uhttps://neurotechcenter.org/publications/2023/towards-clinical-application-implantable-brain-computer-interfaces02621nas a2200421 4500008004100000022001400041245010100055210006900156260000900225300001100234490000600245520128700251100002101538700002101559700002801580700002201608700002001630700002101650700002301671700001901694700002501713700002201738700002201760700002401782700002101806700002201827700002101849700002701870700001801897700002901915700002001944700002501964700002501989700002402014700002202038700002002060856011902080 2022 eng d a2326-263X00aWorkshops of the Eighth International Brain-Computer Interface Meeting: BCIs: The Next Frontier.0 aWorkshops of the Eighth International BrainComputer Interface Me c2022 a69-1010 v93 a

The Eighth International Brain-Computer Interface (BCI) Meeting was held June 7-9th, 2021 in a virtual format. The conference continued the BCI Meeting series' interactive nature with 21 workshops covering topics in BCI (also called brain-machine interface) research. As in the past, workshops covered the breadth of topics in BCI. Some workshops provided detailed examinations of specific methods, hardware, or processes. Others focused on specific BCI applications or user groups. Several workshops continued consensus building efforts designed to create BCI standards and increase the ease of comparisons between studies and the potential for meta-analysis and large multi-site clinical trials. Ethical and translational considerations were both the primary topic for some workshops or an important secondary consideration for others. The range of BCI applications continues to expand, with more workshops focusing on approaches that can extend beyond the needs of those with physical impairments. This paper summarizes each workshop, provides background information and references for further study, presents an overview of the discussion topics, and describes the conclusion, challenges, or initiatives that resulted from the interactions and discussion at the workshop.

1 aHuggins, Jane, E1 aKrusienski, Dean1 aVansteensel, Mariska, J1 aValeriani, Davide1 aThelen, Antonia1 aStavisky, Sergey1 aNorton, James, J S1 aNijholt, Anton1 aMüller-Putz, Gernot1 aKosmyna, Nataliya1 aKorczowski, Louis1 aKapeller, Christoph1 aHerff, Christian1 aHalder, Sebastian1 aGuger, Christoph1 aGrosse-Wentrup, Moritz1 aGaunt, Robert1 aDusang, Aliceson, Nicole1 aClisson, Pierre1 aChavarriaga, Ricardo1 aAnderson, Charles, W1 aAllison, Brendan, Z1 aAksenova, Tetiana1 aAarnoutse, Erik uhttps://neurotechcenter.org/publications/2022/workshops-eighth-international-brain-computer-interface-meeting-bcis04192nas a2200409 4500008004100000022001400041245005900055210005700114260001200171300001100183490000700194520303500201653001403236653001403250653001503264653002703279653001303306653001103319653004003330653003103370653002903401653001103430653002203441653002803463653002203491653001703513653002803530100002803558700001703586700002303603700002503626700001903651700002003670700002403690700002003714856004803734 2010 eng d a1531-824900aBrain-computer interfacing based on cognitive control.0 aBraincomputer interfacing based on cognitive control c06/2010 a809-160 v673 a

OBJECTIVE: 

Brain-computer interfaces (BCIs) translate deliberate intentions and associated changes in brain activity into action, thereby offering patients with severe paralysis an alternative means of communication with and control over their environment. Such systems are not available yet, partly due to the high performance standard that is required. A major challenge in the development of implantable BCIs is to identify cortical regions and related functions that an individual can reliably and consciously manipulate. Research predominantly focuses on the sensorimotor cortex, which can be activated by imagining motor actions. However, because this region may not provide an optimal solution to all patients, other neuronal networks need to be examined. Therefore, we investigated whether the cognitive control network can be used for BCI purposes. We also determined the feasibility of using functional magnetic resonance imaging (fMRI) for noninvasive localization of the cognitive control network.

METHODS: 

Three patients with intractable epilepsy, who were temporarily implanted with subdural grid electrodes for diagnostic purposes, attempted to gain BCI control using the electrocorticographic (ECoG) signal of the left dorsolateral prefrontal cortex (DLPFC).

RESULTS: 

All subjects quickly gained accurate BCI control by modulation of gamma-power of the left DLPFC. Prelocalization of the relevant region was performed with fMRI and was confirmed using the ECoG signals obtained during mental calculation localizer tasks.

INTERPRETATION: 

The results indicate that the cognitive control network is a suitable source of signals for BCI applications. They also demonstrate the feasibility of translating understanding about cognitive networks derived from functional neuroimaging into clinical applications.

10aCognition10aComputers10aElectrodes10aElectroencephalography10aEpilepsy10aHumans10aImage Processing, Computer-Assisted10aMagnetic Resonance Imaging10aNeuropsychological Tests10aOxygen10aPrefrontal Cortex10aPsychomotor Performance10aSpectrum Analysis10aTime Factors10aUser-Computer Interface1 aVansteensel, Mariska, J1 aHermes, Dora1 aAarnoutse, Erik, J1 aBleichner, Martin, G1 aSchalk, Gerwin1 aRijen, Peter, C1 aLeijten, Frans, S S1 aRamsey, Nick, F uhttp://www.ncbi.nlm.nih.gov/pubmed/20517943