AI Article Synopsis
Article Abstract
Objectives: Brain-computer interface (BCI) technology aims at helping end-users with severe motor paralysis to communicate with their environment without using the natural output pathways of the brain. For end-users in complete paralysis, loss of gaze control may necessitate non-visual BCI systems. The present study investigated the effect of training on performance with an auditory P300 multi-class speller paradigm. For half of the participants, spatial cues were added to the auditory stimuli to see whether performance can be further optimized. The influence of motivation, mood and workload on performance and P300 component was also examined.
Methods: In five sessions, 16 healthy participants were instructed to spell several words by attending to animal sounds representing the rows and columns of a 5 × 5 letter matrix.
Results: 81% of the participants achieved an average online accuracy of ⩾ 70%. From the first to the fifth session information transfer rates increased from 3.72 bits/min to 5.63 bits/min. Motivation significantly influenced P300 amplitude and online ITR. No significant facilitative effect of spatial cues on performance was observed.
Conclusions: Training improves performance in an auditory BCI paradigm. Motivation influences performance and P300 amplitude.
Significance: The described auditory BCI system may help end-users to communicate independently of gaze control with their environment.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.clinph.2015.04.054 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
The P200 ERP Response in Mild Cognitive Impairment and the Aging Population.
Clin EEG Neurosci
January 2025
Palma Sola Neurology Associates, Bradenton, FL, USA.
Evoked potential metrics extracted from an EEG exam can provide novel sources of information regarding brain function. While the P300 occurring around 300 ms post-stimulus has been extensively investigated in relation to mild cognitive impairment (MCI), with decreased amplitude and increased latency, the P200 response has not, particularly in an oddball-stimulus paradigm. This study compares the auditory P200 amplitudes between MCI (28 patients aged 74(8)) and non-MCI, (35 aged 72(4)).
View Article and Find Full Text PDFP300 Event-Related Potential: A Surrogate Marker of Cognitive Dysfunction in Parkinson's Disease Patients with Psychosis.
Ann Indian Acad Neurol
January 2025
Department of Clinical Psychology, National Institute of Mental Health and Neuro Sciences, Bengaluru, Karnataka, India.
Background And Objectives: Psychosis is one of the major neuropsychiatric non-motor symptoms of Parkinson's disease (PD). Prolonged latency and decreased amplitude of the P300 event-related potential (ERP) is a potential neurophysiologic biomarker of deeper neurocognitive deficits in PD. We aimed to characterize electroencephalogram (EEG)/ERP parameters in PD patients with and without psychosis (PDP and PDNP, respectively), and to determine if such measures could act as endophenotypes for PD-associated psychosis (PDP).
View Article and Find Full Text PDFImprove the behavioral auditory attention training effects on the Speech-In-Noise perception with simultaneous electrical stimulation in children with hearing loss: A randomized clinical trial.
Int J Pediatr Otorhinolaryngol
December 2024
Department of Audiology, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran. Electronic address:
Background: Auditory attention is an important cognitive factor that significantly affects speech perception in noisy environments. Hearing loss can impact attention, and it can impair speech perception in noise. Auditory attention training improves speech perception in noise in children with hearing loss.
View Article and Find Full Text PDFFour-class ASME BCI: investigation of the feasibility and comparison of two strategies for multiclassing.
Front Hum Neurosci
November 2024
Graduate School of Engineering and Science, Shibaura Institute of Technology, Tokyo, Japan.
Introduction: The ASME (stands for Auditory Stream segregation Multiclass ERP) paradigm is proposed and used for an auditory brain-computer interface (BCI). In this paradigm, a sequence of sounds that are perceived as multiple auditory streams are presented simultaneously, and each stream is an oddball sequence. The users are requested to focus selectively on deviant stimuli in one of the streams, and the target of the user attention is detected by decoding event-related potentials (ERPs).
View Article and Find Full Text PDFAbnormal electrical brain responses to time deviance in beat deafness.
Neuropsychologia
December 2024
Department of Psychology, University of Montreal, Quebec, Canada; International Laboratory for Brain, Music and Sound Research (BRAMS), University of Montreal, Quebec, Canada. Electronic address:
Humans have the spontaneous capacity to track the beat of music. Yet some individuals show marked difficulties. To investigate the neural correlates of this condition known as beat deafness, the cortical electric activity of ten beat-deaf adults, the largest cohort studied so far, as well as of 14 matched controls (Experiment 2), and 16 university students (Experiment 1) were examined.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!