Week Two - Day Two

Action potential in the brain is when ions are released outside the cell. When a bunch of ions are released and create a wave at the electrode (through repelling away from each other), the electrodes become polarized, thus allowing the voltage to be measured. Electrodes may be spaced out around the scalp for the reason to capture all neuron activity. 

Theta waves have a frequency range between 4 Hz and 7 Hz and represent abnormal activity, along with reports of relaxed, meditative, and creative states. The color purple is the shortest wavelength and has a frequency of 7.5, the correlation being that the color purple relaxes you. 

Eye tracking and EEG are linked together sometimes to improve the reading of which areas of the brain light up when engaged in cognitive tasks

Action power in the Emotiv Control Panel for the EmotivSDK, shows the certainty in which the user is hitting the area in which they are supposed to activate for the cognitive task. The more action power, the stronger the signal and connection to that area of the brain meaning the concentration is better and the block is able to do that certain action longer.

Emotiv API functions that modify or retrieve EmoEngine settings are prefixed with "EE_." which is why most of the coding I've seen relating to the Emotiv EPOC has had the prefix "EE_" for example (EE_EmoEngineEventCreate). Expressive commands or actions are prefixed with "EE_Expressiv". The (trained_sig) command works with the (EE_ExpressivGetTrainedSignatureAvailable( ) ) which learns the trained action such as smile or eyebrow. Although the eyelid-related expressions (Blink, Wink, Look Left, and Look Right) cannot be trained.

Powerpoint explaining the Emotiv EPOC each suite as well as a summary the first two weeks is down below.