Neural Noise

2010-06

6 min read

BCI Monthly Roundup — June 2010

1–30 June 2010

Introduction

June 2010 covered 55 items across the weekly briefs, with primary themes in Motor Imagery, Eeg and Bci. Papers and prototypes dominated. Clinical and regulatory items appeared. Industry and funding news was present.

Suggested Titles

  • BCI Monthly Roundup: June 2010
  • Motor Imagery and Eeg: June in BCI
  • From Motor Imagery to Bci: BCI Briefs for June 2010
  • June 2010 BCI: Motor Imagery, Eeg, Bci
  • Neural Interfaces Monthly: June 2010 Highlights

Papers and Prototypes

General BCI Research.

  • Meta-Analysis of EEG BCI Performance — Journal of Neural Engineering (2010-06-01). Link. First meta-analysis of EEG BCI performance across paradigms; found P300 and SSVEP outperformed motor imagery with less training requirement.
  • BCI Illiteracy Predictors in Naive Users — Clinical Neurophysiology (2010-06-01). Link. BCI illiteracy predictor study in naive participants; identified alpha peak frequency and SMR power as pre-training predictors of motor imagery BCI performance.
  • FORCE Learning in Neural Networks — Neuron (2010-06-09). Link. FORCE learning algorithm for recurrent neural networks; provided computational basis for fast BMI decoder learning without extensive calibration data.
  • Cross-Session Transfer Learning for BCI — IEEE Transactions on Neural Systems and Rehabilitation Engineering (2010-06-01). Link. Cross-session transfer learning reducing calibration time to 5 minutes; Euclidean alignment method demonstrated superior transfer over session-specific training.

Motor Imagery and Decoding.

  • Bayesian Binomial Decoder for Discrete BMI States — Journal of Neural Engineering (2010-06-01). Link. Bayesian discrete state BMI decoder for clicking; outperformed threshold methods for binary BCI state detection with calibrated posterior probabilities.
  • Neural Tuning Properties and BMI Performance — Journal of Neurophysiology (2010-06-09). Link. Relationship between neuron tuning properties and BMI performance; broad directional tuning and high firing rate variability identified as optimal neuron selection criteria.
  • Supervised Dimensionality Reduction for BMI — Journal of Neural Engineering (2010-06-01). Link. Supervised dimensionality reduction of neural populations for BMI; LQRT and PGLD methods identified optimal projections maximizing task-relevant variance.

Brain–Computer Interfaces.

  • Rapid Serial Visual Presentation BCI — Journal of Neural Engineering (2010-06-01). Link. RSVP-based BCI using rapid image presentation for target detection; achieved information transfer rates of 25 bits/minute using RSVP and single-trial P300 detection.
  • A Wearable EEG BCI for Amyotrophic Lateral Sclerosis — IEEE Transactions on Neural Systems and Rehabilitation Engineering (2010-06-01). Link. Wearable P300 BCI for ALS communication in home setting; demonstrated 85% spelling accuracy with 8-electrode wearable system in 4 ALS patients.
  • High-Throughput Auditory P300 BCI — Journal of Neural Engineering (2010-06-15). Link. Auditory P300 BCI for eyes-free communication; achieved 5 characters/minute using audio oddball paradigm with 26-character vocabulary.

Neuromodulation and Stimulation.

  • Peripheral Sensory Stimulation for BCI-Driven Plasticity — Journal of Neurophysiology (2010-06-01). Link. Paired peripheral sensory stimulation with cortical activity for plasticity; peripheral afferent conditioning enhanced cortical excitability for BCI-coupled plasticity induction.
  • TMS-EEG for Probing Cortical Dynamics — NeuroImage (2010-06-01). Link. TMS-EEG combined for probing motor cortex reactivity; TMS-evoked EEG responses quantified corticospinal excitability changes during motor imagery BCI training.
  • Spinal Cord Injury Rehabilitation with BCI — Journal of Neural Engineering (2010-06-01). Link. BCI-controlled FES for SCI rehabilitation with EEG; demonstrated consistent improvements in FMA score over 10-session BCI-FES rehabilitation in chronic SCI.

EEG Methods and Analysis.

  • Covariate Shift in BCI Data — Journal of Neural Engineering (2010-06-01). Link. Covariate shift analysis in EEG BCI data; showed that EEG distribution shifted between sessions requiring importance-weighted cross-validation for unbiased performance estimation.
  • Phase-Locking Value for EEG Connectivity in BCI — Journal of Neural Engineering (2010-06-01). Link. Phase-locking value for EEG connectivity feature extraction; PLV-based features discriminated motor imagery states with improved cross-session stability.

Neurofeedback.

  • Real-Time fMRI Neurofeedback for Motor Stroke — Stroke (2010-06-01). Link. Real-time fMRI neurofeedback for motor cortex upregulation in chronic stroke; showed 8-session rt-fMRI NF improved BOLD laterality and hand motor scores.
  • Neurofeedback vs. Medication for ADHD — Biological Psychiatry (2010-06-01). Link. Randomized comparison of neurofeedback versus methylphenidate for ADHD; neurofeedback showed comparable behavioral improvement with sustained effects at 6-month follow-up.

Invasive Neural Interfaces.

  • Poly-Silicon Flexible Neural Probes — Journal of Neural Engineering (2010-06-01). Link. Flexible polyimide-based neural probe for reduced tissue response; demonstrated reduced GFAP staining at 4 weeks compared to silicon shanks of equivalent size.
  • Long-Duration Chronic Single-Unit Recording — Journal of Neural Engineering (2010-06-01). Link. 15-month chronic single-unit recording stability in macaque motor cortex; documented progressive loss of well-isolated single units with maintained multi-unit BMI performance.

Closed-Loop Systems.

  • Autonomous Robotic BCI for Object Grasping — Journal of Neural Engineering (2010-06-01). Link. Autonomous BCI robot system for object grasping; shared control robot vision system combined with motor cortex BCI for reliable object pickup.
  • Seizure Detection and Prediction Algorithms — Clinical Neurophysiology (2010-06-01). Link. Comparative evaluation of seizure detection and prediction algorithms; benchmark study for closed-loop seizure control BCI algorithm selection.

Clinical and Regulatory

  • Meta-Analysis of EEG BCI Performance — Journal of Neural Engineering (2010-06-01). Link. First meta-analysis of EEG BCI performance across paradigms; found P300 and SSVEP outperformed motor imagery with less training requirement.
  • Spinal Cord Injury Rehabilitation with BCI — Journal of Neural Engineering (2010-06-01). Link. BCI-controlled FES for SCI rehabilitation with EEG; demonstrated consistent improvements in FMA score over 10-session BCI-FES rehabilitation in chronic SCI.
  • A Wearable EEG BCI for Amyotrophic Lateral Sclerosis — IEEE Transactions on Neural Systems and Rehabilitation Engineering (2010-06-01). Link. Wearable P300 BCI for ALS communication in home setting; demonstrated 85% spelling accuracy with 8-electrode wearable system in 4 ALS patients.
  • Responsive Neurostimulation for Epilepsy — (continued from May) — Phase I safety results established.
  • Peripheral Sensory Stimulation for BCI-Driven Plasticity — Journal of Neurophysiology (2010-06-01). Link. Paired peripheral sensory stimulation with cortical activity for plasticity; peripheral afferent conditioning enhanced cortical excitability for BCI-coupled plasticity induction.
  • Neurofeedback vs. Medication for ADHD — Biological Psychiatry (2010-06-01). Link. Randomized comparison of neurofeedback versus methylphenidate for ADHD; neurofeedback showed comparable behavioral improvement with sustained effects at 6-month follow-up.

Companies and Funding

  • FORCE Learning in Neural Networks — Neuron (2010-06-09). Link. FORCE learning algorithm for recurrent neural networks; provided computational basis for fast BMI decoder learning without extensive calibration data.
  • Autonomous Robotic BCI for Object Grasping — Journal of Neural Engineering (2010-06-01). Link. Autonomous BCI robot system for object grasping; shared control robot vision system combined with motor cortex BCI for reliable object pickup.
  • High-Throughput Auditory P300 BCI — Journal of Neural Engineering (2010-06-15). Link. Auditory P300 BCI for eyes-free communication; achieved 5 characters/minute using audio oddball paradigm with 26-character vocabulary.

Emerging Themes

The main themes this month were: Motor Imagery; Eeg; Rehabilitation Bci.

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