Project: Anschutz (112 OPM sensors)
Subject: HX
Subject ID: AS23
Date: December 14, 2021
Paradigm: Tactile (little air bladder clipped to finger)

Tactile Paradigm
Template: template SS_pnm2
Little air bladder clipped to the finger of the subject
All five fingers of the right hand were measured individually
Then two fingers of the right hand were measured simultaneously with a synchronized pulse
ISI: 2 sec
100-200 trials per digit

Triggers
Channel 00:00        HPI tigger
Channel 01:00        tactile trigger
Channel 05:00        Sensor localization trigger

Sensor positions
If a location is 00 for x, y, and z, it is a bad channel

Coregistration
Before and after measurement day
HPI coils 1-5, one measurement per file 
43 Hz sine wave
100  Ohm resistor
10 sec measured at two amplitudes: 0.05 V and 0.5V

Two Polhemus files:
Polhemus head shape measurement outside the helmet and inside the helmet
Five point Polhemus file has fiducially, HPI coils, and 5 points on the OPM helmet
	LPA, RPA, Nasion are the fiducials
	Cz, Inion are the coil positions taped to the eyebrow/temple region
	Coil1=LPA coil
	Coil2=RPA coil
	Coil3=Nasion coil
	Coil4=Cz coil around left eyebrow
	Coil5=Inion around right eyebrow
	OPM1-5 are the following reference points on the helmet
	OPM1=Point 1
	OPM2=Point 4
	OPM3=Point 2
	OPM4=Point 3
	OPM5=Point 5
The coordinates in the sensor frame are:

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