0000000000083899

AUTHOR

Woosang Cho

showing 4 related works from this author

Complete locked-in and locked-in patients: Command following assessment and communication with vibro-tactile P300 and motor imagery brain-computer in…

2017

Many patients with locked-in syndrome (LIS) or complete locked-in syndrome (CLIS) also need brain-computer interface (BCI) platforms that do not rely on visual stimuli and are easy to use. We investigate command following and communication functions of mindBEAGLE with 9 LIS, 3 CLIS patients and three healthy controls. This tests were done with vibro-tactile stimulation with 2 or 3 stimulators (VT2 and VT3 mode) and with motor imagery (MI) paradigms. In VT2 the stimulators are fixed on the left and right wrist and the participant has the task to count the stimuli on the target hand in order to elicit a P300 response. In VT3 mode an additional stimulator is placed as a distractor on the shoul…

0301 basic medicinemedicine.medical_specialtyVisual perceptionComputer scienceInterface (computing)ElectroencephalographyAudiologyTask (project management)lcsh:RC321-57103 medical and health sciences0302 clinical medicineMode (computer interface)Motor imageryMotor imagerymedicineIn patientVibro-tactileBCIlcsh:Neurosciences. Biological psychiatry. NeuropsychiatrySimulationBrain–computer interfaceOriginal Researchmedicine.diagnostic_testGeneral NeuroscienceCommunicationEP030104 developmental biologyALS030217 neurology & neurosurgeryNeuroscience
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Assessing Command-Following and Communication With Vibro-Tactile P300 Brain-Computer Interface Tools in Patients With Unresponsive Wakefulness Syndro…

2018

Persons diagnosed with disorders of consciousness (DOC) typically suffer from motor disablities, and thus assessing their spared cognitive abilities can be difficult. Recent research from several groups has shown that non-invasive brain-computer interface (BCI) technology can provide assessments of these patients' cognitive function that can supplement information provided through conventional behavioral assessment methods. In rare cases, BCIs may provide a binary communication mechanism. Here, we present results from a vibrotactile BCI assessment aiming at detecting command-following and communication in 12 unresponsive wakefulness syndrome (UWS) patients. Two different paradigms were admi…

0301 basic medicinemedicine.medical_specialtyevoked potentialsStimulus (physiology)WristElectroencephalographybrain computer interfacevegetative statelcsh:RC321-57103 medical and health sciences0302 clinical medicinePhysical medicine and rehabilitationmedicinevibro-tactile P300In patientlcsh:Neurosciences. Biological psychiatry. NeuropsychiatryOriginal ResearchBrain–computer interfaceunresponsive wakefulness syndromeevoked potentialmedicine.diagnostic_testbusiness.industrycommunicationGeneral NeuroscienceGrand averageCognition030104 developmental biologymedicine.anatomical_structureWakefulnessbusiness030217 neurology & neurosurgeryNeuroscienceFrontiers in Neuroscience
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Effects of Repeating a Tactile Brain-Computer Interface on Patients with Disorder of Consciousness: A Hint of Recovery?

2019

Brain-computer interface (BCI) has been emerging as an assessment tool for patients with disorder of consciousness (DOC). With the advantages of high time resolution, low cost and portable design, EEG based BCI systems are especially suitable for bedside measurement. Recent studies showed the successful application of an EEG based BCI on DOC assessment and communication. However, the effect of repeated BCI measurement on this patient group is not clear. In this study, a tactile BCI paradigm was repeated 12 runs for 10 consecutive days on 5 DOC patients. Although the BCI performance varied among runs and days, every patient reached at least once the accuracy above 60%. Moreover, the Coma Rec…

Comamedicine.medical_specialtymedicine.diagnostic_testbusiness.industryInterface (computing)media_common.quotation_subjectTime resolutionAudiologyElectroencephalographymedicinemedicine.symptomPatient groupConsciousnessbusinessmedia_commonBrain–computer interface2019 9th International IEEE/EMBS Conference on Neural Engineering (NER)
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MindBEAGLE — A new system for the assessment and communication with patients with disorders of consciousness and complete locked-in syndrom

2017

Patients with disorders of consciousness (DOC) cannot reply to questions or clinical assessments using voluntary motor control, and therefore it is very difficult to assess their cognitive capabilities and conscious awareness. Patients who are locked-in (LIS) are instead fully conscious, and they can communicate with their preserved eye movements. However, when the residual oculomotor activity is also lost (e.g., patients with amyotrophic lateral sclerosis disease of very long duration), the locked-in status becomes complete (CLIS). In CLIS patients, detection of conscious awareness may become very challenging, similarly to the subjects with DOC. mindBEAGLE has a physiological testing batte…

medicine.medical_specialtymedicine.diagnostic_testbusiness.industry05 social sciencesEye movementMotor controlDisorders of consciousnessCognitionElectroencephalographyAudiologymedicine.disease050105 experimental psychology03 medical and health sciences0302 clinical medicineMotor imagerymedicine0501 psychology and cognitive sciencesLocked-in syndromebusiness030217 neurology & neurosurgeryBrain–computer interface2017 IEEE International Conference on Systems, Man, and Cybernetics (SMC)
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