• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 64
  • 25
  • 12
  • 7
  • 6
  • 3
  • 2
  • 2
  • 2
  • 2
  • 1
  • 1
  • Tagged with
  • 166
  • 166
  • 166
  • 56
  • 47
  • 47
  • 36
  • 32
  • 29
  • 25
  • 25
  • 23
  • 23
  • 22
  • 22
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
71

P300-Based BCI Performance Prediction through Examination of Paradigm Manipulations and Principal Components Analysis.

Schwartz, Nicholas Edward 18 December 2010 (has links) (PDF)
Severe neuromuscular disorders can produce locked-in syndrome (LIS), a loss of nearly all voluntary muscle control. A brain-computer interface (BCI) using the P300 event-related potential provides communication that does not depend on neuromuscular activity and can be useful for those with LIS. Currently, there is no way of determining the effectiveness of P300-based BCIs without testing a person's performance multiple times. Additionally, P300 responses in BCI tasks may not resemble the typical P300 response. I sought to clarify the relationship between the P300 response and BCI task parameters and examine the possibility of a predictive relationship between traditional oddball tasks and BCI performance. Both waveform and component analysis have revealed several task-dependent aspects of brain activity that show significant correlation with the user's performance. These components may provide a fast and reliable metric to indicate whether the BCI system will work for a given individual.
72

Decoding spatial location of attended audio-visual stimulus with EEG and fNIRS

Ning, Matthew H. 17 January 2023 (has links)
When analyzing complex scenes, humans often focus their attention on an object at a particular spatial location in the presence of background noises and irrelevant visual objects. The ability to decode the attended spatial location would facilitate brain computer interfaces (BCI) for complex scene analysis. Here, we tested two different neuroimaging technologies and investigated their capability to decode audio-visual spatial attention in the presence of competing stimuli from multiple locations. For functional near-infrared spectroscopy (fNIRS), we targeted dorsal frontoparietal network including frontal eye field (FEF) and intra-parietal sulcus (IPS) as well as superior temporal gyrus/planum temporal (STG/PT). They all were shown in previous functional magnetic resonance imaging (fMRI) studies to be activated by auditory, visual, or audio-visual spatial tasks. We found that fNIRS provides robust decoding of attended spatial locations for most participants and correlates with behavioral performance. Moreover, we found that FEF makes a large contribution to decoding performance. Surprisingly, the performance was significantly above chance level 1s after cue onset, which is well before the peak of the fNIRS response. For electroencephalography (EEG), while there are several successful EEG-based algorithms, to date, all of them focused exclusively on auditory modality where eye-related artifacts are minimized or controlled. Successful integration into a more ecological typical usage requires careful consideration for eye-related artifacts which are inevitable. We showed that fast and reliable decoding can be done with or without ocular-removal algorithm. Our results show that EEG and fNIRS are promising platforms for compact, wearable technologies that could be applied to decode attended spatial location and reveal contributions of specific brain regions during complex scene analysis.
73

Improving decoding in intracortical brain-machine interfaces

Stetner, Michael E. 11 January 2010 (has links)
No description available.
74

Coadaptive Decoding of Muscle Activations
 from Motor Cortex for the Real-Time Control of an Upper Limb Neuroprosthesis

Kalodimos, Harrison Anthony 26 June 2012 (has links)
No description available.
75

Interactions between hippocampal and cerebellar theta oscillations during cerebellar theta-contingent trace eyeblink conditioning acquisition and extinction in the rabbit.

Hoffmann, Loren C. 21 April 2014 (has links)
No description available.
76

Intracortical Brain-Computer Interfaces: Modeling the Feedback Control Loop, Improving Decoder Performance, and Restoring Upper Limb Function with Muscle Stimulation

Willett, Francis R. 06 June 2017 (has links)
No description available.
77

Design of a Modified P300 Speller System Based on Prediction by Partial Matching Language Model

Wang, Mengxia 15 October 2012 (has links)
No description available.
78

Exploring Empirical Guidelines for Selecting Computer Assistive Technology for People with Disabilities

Border, Jennifer January 2011 (has links)
No description available.
79

Development of Microcontroller-based Handheld Electroencephalography Device for use in Diagnostic Analysis of Acute Neurological Emergencies (E-Hand)

Jones, Brittany M.G. January 2015 (has links)
No description available.
80

ASSESSMENT OF FACTORS RELATED TO CHRONIC INTRACORTICAL RECORDING RELIABILITY

Jingle, Jiang 08 February 2017 (has links)
No description available.

Page generated in 0.1265 seconds