Past BCI Thursdays recordings

Next Generations (Free events)

The BCI Society Next Generations series is intended for students to provide technical background on some cutting-edge topics in BCI research.

Next Generation events are recorded and made available below.

Next Generations: Trainee Spotlights

November 18th, 2021

Opportunities for trainees to present their preliminary work and get advice and feedback from experienced researchers are scarce, especially during this pandemic period. This is particularly true for students from small research groups, sometimes isolated within their own institutions. The inaugural Trainee Spotlights will feature 3 trainees with each presenter given 10 minutes to present his/her work and 5 minutes to answer attendee questions. The last 15 minutes will be dedicated to a panel discussion.

 

Next Generations: Industry-Academia Talks

September 30th, 2021

Watch this novel online event mixing Industry and Academia talks.  Our inaugural speakers are Joey O’Doherty from Neuralink and Chethan Pandarinath from Emory/Georgia Tech.

 

Next Generation – Adaptive BCI invasive

April 15th, 2021

Design considerations for closed-loop decoder adaptation algorithms in invasive BCIs
Closed-loop decoder adaptation (CLDA) is a powerful technique in invasive brain-computer interfaces. CLDA is frequently used to train and optimize decoding algorithms “in situ,” reducing errors in performance that arise due to differences between open loop decoder training and closed loop BCI operation. CLDA has also proven useful as a strategy to maintain performance over time despite non-stationary measurements (e.g. signal drift). Many design choices must be made when creating a CLDA algorithm, which will influence its overall performance and utility. These choices include the form of error signal used to guide algorithm retraining, the learning rules used to update the decoder, the timescale of decoder updates, and the decoder parameters to update. User-decoder interactions must also be considered when designing CLDA algorithms. In this talk, I will briefly survey these details. I will present a case-study of CLDA algorithms optimized to robustly and rapidly initialize a BCI decoder independent of initialization, and review the algorithm design choices that led to the success of these algorithms. I will also briefly touch on the use of CLDA for promoting co-adaptation between the brain and decoder.

Next Generation – EEG Analysis

March 10th, 2021

Introduction to EEG Analysis for BCI
We introduce the theory and practice of analyzing EEG data for BCI applications. We discuss the origin of the EEG signal and recording methods. We also give a brief introduction to analysis methods such as time-frequency analysis and Independent Component Analysis (ICA). We mention some of the EEG analysis computer platforms available.

Next Generation – Machine Learning for BCI

January 21st, 2021

Recorded brain activity displays complex non-linear dynamics and is highly participant and even session dependent. Furthermore, the signals often display many non-stationarities. To still make sense of these challenging data, specific consideration for the machine learning approach must be made.  In this didactic session, common challenges for machine learning in BCI research will be highlighted and some key considerations of how to address them will be discussed. Briefly, both a regression and a classification problem will be discussed. Quick examples, using both invasive and non-invasive data, will be used to illustrate problems and common fallacies. As in many time series data, specific attention must be paid to the evaluation in BCI research, as the strong autocorrelations of the data can otherwise induce exaggerated results. Finally, some key considerations for the translation from offline results to viable BCI solutions will be presented.