Week 14 (2/07/2021)

The team was successfully able to apply a notch filter to receive a signal from the electrodes while being worn, but there are instances when the helmet will stop providing signals even if the chords to the electrodes are shaken. The team has yet to understand why this is the case, but we're currently in the process of reviewing the issue and amplifying the signal with an operational amplifier.

Tyler took the circuit home with him to work on the circuit further and to determine why the helmet seems to stop working in some instances.

THIS WEEK

Tyler

• Built the notch filter

• Began to build the amplifier and made any necessary corrections to the circuit

Mark

• Worked with different EEG datasets

• Reviewed EEGLAB code to determine their form of K-mean clustering https://eeglab.org/tutorials/10_Group_analysis/component_clustering_tools.html
  

NEXT WEEK

Tyler

• Determine why the circuit stops providing a signal for periods of time

• Complete the amplifier circuit for the EEG helmet

• Read data into Arduino and integrate multiplexers for multiple channels

Mark

• Assist Tyler on the circuit design

• Determine how EEGLAB performs k-means clustering, and determine how to review the inside of SET files

Memo: Dr. Hossein Asghari spoke with Tyler and Mark to discuss the current progress on the circuit. Tyler and Mark explained the issue to Dr. Asghari on how the circuit ceases to work during certain moments. Dr. Asghari said he is going to show up on campus on 02/18/2021 to determine what the issue may be.