Strategic Objectives
• Master the materials science behind low-impedance sensor design.
• Eliminate artifacts by understanding the electrochemical properties of skin.
• Optimize signal-to-noise ratios through advanced hardware shielding.
• Navigate the trade-offs between dry, wet, and semi-dry electrode systems.
The Core Challenge
Traditional neural recording often fails not due to lack of brain activity, but because of the immense physical and chemical noise inherent in the scalp-electrode interface.
01
The Physics of Surface EEG
02
Anatomy of the Scalp
03
Electrode-Skin Impedance
04
Electrochemical Double Layers
05
Conductive Pastes and Gels
06
Silver-Silver Chloride Electrodes
07
Dry Electrode Innovation
08
The Noise Floor
09
Common-Mode Rejection
10
Active vs. Passive Sensors
11
Skin Preparation Techniques
12
Motion Artifact Dynamics
13
Galvanic Skin Response
14
Shielding and Guarding
15
Capacitive Sensing
16
Biopotential Amplifiers
17
Thermal Noise in Sensors
18
Flex Electronics and Wearables
19
Material Biocompatibility
20
Signal Digitization
21