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Microsoft Surface Pro 7 i5
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Professional licence, unlimited sessions for family use and/or professional use
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Microsoft Type Cover (detachable keyboard)
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Surface Pro sleeve
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zAmp
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1 x set of brand new unused sensors
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1 x 4oz tub of unopened Ten20 conductive paste
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Charger cord
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1 x USB cable
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Extra Zengar music track purchased and uploaded
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NeurOptimal Getting Started Manual
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Serviced and antivirus software renewed April 2026
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Updated to Windows 11
Bought from Zengar in September 2021 for US$10,000 + $1700 tax (about A$16,500).
Was bought as part of a rental fleet but only lightly used over the years as I did not have all my systems out at all times and am now downsizing due to other pursuits. I will never be without a system though - it is incredible technology.
Buyer responsibility to pay licence transfer fee (approximately US$450).
I will cover postage if sent in Australia. Will be posted in a $50 heavy duty tough case (pictured) which you can keep. Handy for ongoing storage, travel or postage.
Serious buyers only, please email [email protected].
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]]>This version has unlimited sessions available and is the latest version with Surface tablet. Shipping cost included in price within the US (message me for international options).
Only used in-home for personal family use and has never been shipped or loaned as a rental.
Includes everything pictured as if it came new. Tablet, cables and sensors are all in like-new condition.
All system updates and antivirus protection are current.
This can be used in-home for your whole family. If you’re a practitioner, you can rent it out at a monthly rate.
Buyer is responsible for Zengar’s $495 transfer fee.
Will ship unit as soon as electronic payment method of your choice clears.
Neuroptimal helps nervous system regulation, stress management, learning capacity management, emotional regulation, peak performance, sleep management, anxiety management, attention and focus.
Feel free to message me with any questions.
1 post - 1 participant
]]>Perfect for home users, students, or small clinicians starting neurofeedback. Turnkey setup with BrainMaster 2EB+ amplifier (cleaned electrodes, full cable set, case, serial #21406 Atlantis) paired with HP Victus 15-fa0032dx i7 + RTX laptop, charger, BrainMaster software pre-installed, plus laptop case and accessories. Ideal for personal use, training, or concussion recovery protocols.
The original cost of the BrainMaster device was $4,000, and the laptop was approximately $900.
Listings:
https://aapb.org/classifieds.php?record_number=175
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]]>I am selling my lightly used - roughly 300 sessions - Summer 2020 Neuroptimal Neurofeedback machine on standard Microsoft hardware/software.
I have new sensors purchased from official site; new paste; original Zamp/wires. I just purchased 2 year ESET antivirus and premium home security for the laptop. Zamp serial number: 8469.
Surface Pro 7+ 11th Gen Intel Core i5-1135G7
Windows 11 Pro, 8 GB RAM, 128 GB SSD
Condition: Excellent/like new.
Hardware: well-kept labtop, Zamp, and original cables.
This machine was originally purchased for family and personal use. It was intended to eventually roll into a business however my life has turned me onto a new career. I live in Tsawwassen BC; available for pickup or insured shipping).
Contents:
1x Z-amp
2x Sensors
1x Surface Pro PC
1x Surface Power Adapter
1x Rugged Surface Pro Protective Case
1x 128 GB Micro SD Card & Micro SD Card Adapter
1XUSB Cable
1x Panasonic Stereo Headphones with soft sleeves for more adaptive listening experience
1x Surface Sleeve
3x containers of Ten20 Conductive Electrode Paste (1 has used 10% roughly)
Price: $6800 CAD.
Please serious buyers only.
Thank you.
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]]>Bought for a project that never went through.
Grab youself a bargain.
Carries 2 years warranty and also WinEEG basic eeg analysis software
Send me an email at [email protected] or whatsapp +35797694602
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]]>- Neuroamp with Particle Editor and electrodes 1500 euros
- Neuroamp with Dual Drive Extreme and electrodes 1600 euros
- Neuroamp with Advanced Media player and electrodes 1700 euros
- Neuroamp with Hyperpong Neuro, Inner Tube and Advanced Media player 2500 euros
If you are interested in all units then I can give you a great discount.
Please contact me at [email protected] or on whatsapp +35797694602
Sotirios
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]]>I’m selling my Sens.ai neurofeedback headset, one of the most advanced brain training devices out there.
It’s designed for focus improvement, anxiety reduction, emotional balance, and overall cognitive performance – works great for ADHD, stress regulation, or mindfulness training.
Price: 860 USD (608 EUR)
Contact: [email protected] or @simonkytka (Instagram)
Condition:
• Excellent – gently used, fully functional
• Comes with all original accessories (charger, case, etc.)
• Works perfectly with the Sens.ai app (membership not included)
Shipping:
• Ships from the Czech Republic (EU)
• Shipping method and price can be discussed individually – I’m flexible and open to what works best for you
Payment:
• Preferred payment method: PayPal Goods & Services
→ protects both buyer and seller
→ buyer is fully covered against scams or defective items
Feel free to message me with offers or questions!
1 post - 1 participant
]]>Price: €7,000 plus 20% tax.
Shipping from Austria, Europe.
Please contact us by email: [email protected]
4 posts - 3 participants
]]>which i describe in my book
Pallas. Who are my friends. Group composition by personality type
so far, this is just a hypothesis,
with some anecdotal evidence,
but no serious scientific evaluation
the evaluation of my hypothesis poses two challenges
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measuring personality types
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measuring interpersonal compatibility
too many errors come from
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self-report: participants can game personality type questionnaires
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language: personality type questionnaires assume objective definitions of words
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self-deception: unrealistic self-image, “living a lie”, wishful thinking, behavior in low-stress settings (but personality type = typical stress response)
apparently there is some research
that found low to moderate correlations between EEG scans and personality traits
i dont have the money (about 1200 euros)
to buy all the hardware for this experiment,
so maybe someone who already owns the hardware
can conduct these experiments
four personality types
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type 1 = high stress reactivity + high recovery speed
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type 2 = low stress reactivity + low recovery speed
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type 3 = high stress reactivity + low recovery speed
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type 4 = low stress reactivity + high recovery speed
see also: the strange situation
metric 1: stress reactivity = stress-induced change in Alpha power and Beta power compared to baseline
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types 13 = large change = high stress reactivity = easy to distract = childish
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types 24 = small change = low stress reactivity = hard to distract = mature
metric 2: recovery speed = how fast EEG returns to baseline after stress ends
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types 14 = high recovery speed = tough-minded = psychotic = masculine
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types 23 = low recovery speed = tender-minded = neurotic = feminine
metric 3: synchrony between two brains
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higher synchrony = higher compatibility
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lower synchrony = lower compatibility
brain synchrony shows in
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synchronized alpha waves (8–12 Hz) in frontal regions (F3 F4 Fz)
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synchronized theta waves (4–8 Hz) in frontal and central regions (F3 F4 Fz C3 C4 Cz)
two participants interact, or at least are physically very close (eye contact, shaking hands, hugging). i assume that the two nervous systems can sense each other (RF sensing, aura, telepathy, subconscious) and there is not much need for active interaction.
active interaction could be: speaker and listener = teacher and student. person A tells a complex story, person B tries to listen and understand the story, and later reproduce the story as lossless as possible
effects appears within minutes.
true synchrony is stable over time
metric 4: stress transfer
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upward regulation = escalation = low compatibility
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downward regulation = deescalation = high compatibility
problem: how to induce “stress”?
is physical proximity to an incompatible human enough stress?
Galvanic Skin Response
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high skin conductance = high stress = low compatibility
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low skin conductance = low stress = high compatibility
Galvanic Skin Response offers higher time-resolution than Heart rate
(lower latency,
2 seconds in GSR versus 10 seconds in HRV)
Skin conductance =
sympathetic nervous system activation =
“fight or flight” response =
sweat gland activity increases =
skin becomes more electrically conductive =
emotional arousal =
threat detection =
anticipatory anxiety
metric 5. Heart rate variability (HRV) synchrony
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higher synchrony = higher compatibility
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lower synchrony = lower compatibility
optional?
Heart rate offers lower time-resolution than Galvanic Skin Response
metric 6: resting Heart rate variability (HRV)
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types 14 = high resting HRV = high recovery speed
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types 23 = low resting HRV = low recovery speed
repeated pairings
example:
my thesis predicts:
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M1 and M2 are compatible
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M1 and M3 are incompatible
so we have a “three-body problem”
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M2 is in room A
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M3 is in room B
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M1 alternates between the rooms
expected result:
the alternations between compatible relation (M1 and M2)
and incompatible relation (M1 and M3)
correlate with the brain synchrony between the three brains
speed dating
broad-first search
many persons, short time per person
only one person has EEG scanner
## hardware
3 times...
- EEG scanner 8-channel: 400 euros
- [OpenBCI module 8-channel WiFi](https://www.alibaba.com/product-detail/One-set-of-OpenBCI-8-channel_1601281770688.html): 300 Euro (wireless operation is preferred for electrical isolation from the power grid)
- [10x EEG electrode gold-plated 1.5m cable DIN 1.5mm plug](https://www.alibaba.com/product-detail/10pcs-Multicolor-Din-1-5mm-Female_1600232710963.html): 25 Euro (better: [silver electrodes](https://en.wikipedia.org/wiki/Silver_chloride_electrode))
- [EEG head cap black](https://www.alibaba.com/product-detail/Smart-Health-Transcranial-Electrogram-Cap-for_1601523355047.html): 20 Euro
- [8x Touch-Proof DIN 1.5mm male plug](https://www.alibaba.com/product-detail/DIN-1-5mm-Touch-Proof-Terminal_1601301159927.html): 15 Euro (required to [connect pin header and electrode cables](https://shop.openbci.com/products/touch-proof-electrode-cable-adapter))
- [Galvanic skin response GSR sensor module + electrodes](https://wiki.seeedstudio.com/Grove-GSR_Sensor/): 10 Euro
- [Heart Rate sensor module](https://www.alibaba.com/product-detail/Keyestudio-XD-58C-Pulse-Sensor-Measurement_1601574934957.html): 2 Euro
challenges:
- connect EEG electrodes to human heads (use contact gel?) (use comb electrodes?)
- synchronize measurements between all devices
- [connect GSR sensor to OpenBCI module](https://openbci.com/forum/index.php?p=/discussion/156/gsr-openbci)
- use AC current to drive the GSR sensor to avoid polarization of the GSR electrodes
- no contact gel for the GSR electrodes
- [connect HRV sensor to OpenBCI module](https://docs.openbci.com/ThirdParty/Pulse_Sensor/Pulse_Sensor_Landing/)
## software
- [mne-python](https://github.com/mne-tools/mne-python)
- ...?
it would be nice to have some custom software
to plot all metrics of all participants on some display
joining metrics of all participants would require
a bluetooth/wifi network
with a shared clock signal for synchronization
the main node in this network
is broadcasting the clock signal to client nodes
and client nodes send their timestamped measurement data to the main node
so the main node can analyze and plot the measurement data
with a peer-to-peer network (client nodes talking to each other),
we could also measure the physical distance between nodes,
using ping latency as a proxy for physical distance,
so the system can correlate physical proximity and brain synchrony
## calibration of personality types
expected patterns of stress reactivity and recovery speed
can be established by measuring participants
who obviously fit into the two extreme body types:
- type 3 = endomorph = extreme broad, round face
- type 4 = ectomorph = extreme long, long face
## calibration of compatibility
expected patterns of brain synchrony
can be established by measuring stable romantic couples
who self-report a high relationship satisfaction
## see also
- [ChatGPT-Reliable-Personality-Tests.md](https://github.com/milahu/alchi/blob/master/english/chats/ChatGPT-Reliable-Personality-Tests.md#prompt-5)
- [alchi-types.html](https://milahu.github.io/alchi/src/alchi-types/alchi-types.html)
### studies based on EEG scans
- [Neurocognitive correlates of liberalism and conservatism. Amodio 2007](https://sci-hub.ru/https://doi.org/10.1038/nn1979)
- [The political (and physiological) divide: Political orientation, performance monitoring, and the anterior cingulate response. Weissflog 2013](https://sci-hub.ru/https://doi.org/10.1080/17470919.2013.833549)
---
FIXME `An error occurred: Sorry, new users can only put 2 links in a post.`
this is a crosspost from [reddit.com/r/BCI](https://www.reddit.com/r/BCI/comments/1r8yral/measuring_personality_types_and_interpersonal/)
1 post - 1 participant
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FOR SALE: NeurOptimal® Unlimited Professional System
Elevate your practice with this complete Professional Unlimited License setup. Own the software outright with NO per-session fees!
HARDWARE CONFIGURATION
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Tablet: Microsoft Surface Pro 6 (Intel i5, 8GB RAM) -
Storage: 128GB SSD + 128GB USB Drive -
Condition: Very good condition, fully functional
COMPLETE ACCESSORY KIT
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Amplifier: zAmp amplifier -
Sensors: 2 sets of sensors, leads, and cables -
Audio: 1x Over-ear headset & 1x In-ear headphones -
Paste: 3x containers of Ten20 conductive paste -
Carry Case: Included for easy transport
LICENSE & TRANSFER
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Transferable: Via NeurOptimal/Zengar (Standard admin fee applies) -
Reason for Sale: No longer being used regularly
PRICING & LOGISTICS
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Asking Price: €8,500 EUR (Open to discussion/offers) -
Location: Kaunas, Lithuania -
Shipping: Worldwide shipping available after full payment -
Pickup: Local pickup in Kaunas preferred
CONTACT THE SELLER
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Phone: +370 666 80822 -
Email: [email protected]
1 post - 1 participant
]]>I have a used BrainMaster Atlantis I 4x4 System for sale. It includes the amplifier and cables. I also have the BrainAvatar software, which I’d be happy to see if we can also transfer to you, with BrainMaster’s tech support. I am asking $2,000. Here is a link to the item on the BrainMaster website:
Please feel free to reach out if you are interested!
1 post - 1 participant
]]>This is an ideal opportunity for a UK-based buyer to acquire a complete and well-maintained system without the significant additional costs of international shipping and import duties.
Microsoft Surface Pro 7 (i5), includes a Type Cover keyboard.
Model 1960, 128 GB storage. Software Version: v3.5, Identified by Zengar as ‘GCartwright_01’ (Serial Number: 002493921553).
Power Cable (UK plug)
Carrying Sleeve & Protective Case.
zAmp: NeurOptimal Amplifier (Serial Number: 10666)
USB cable to connect the zAmp to the tablet
2 NEW full sets of sensors + 1 full set of USED (cleaned and sterilised) sensors.
NEW Conductive Paste: 6 x 8ox (228g) tubes of Ten20 conductive paste.
As well as the NeurOptimal carrying case, a sturdy, luggage-style protective carrying case is included, designed to house the main laptop/tablet and all accompanying parts securely, with a dedicated pocket for accessories.
Unlimited licence - Eligible for a one-time transfer.
Transfer Fee: The fee is $495 USD. (paid by buyer directly to Zengar)
It will require antivirus software, as any previous subscription has expired.
No PASS membership - No earbuds or headphones are included.
Fully factory reset and ready for new owner setup.
Asking Price - £3,995 GBP + shipping
All shipping, tracking, and insurance costs will be the responsibility of the buyer
.
Serious inquiries only. Please message me for more details, photos, or to discuss. [email protected]
1 post - 1 participant
]]>BrainBit headband [https://store.brainbit.com/products/brainbit-sdk\] I can sell for $420
1 post - 1 participant
]]>The system has been very lightly used (approximately under 100 sessions) and is in excellent, like-new condition. It is fully set up, updated, and ready for immediate use.
System details:
NeuroOptimal version 3.5
Lifetime unlimited sessions licence
Licence is transferable (buyer responsible for any applicable transfer fee)
Z-Amp serial number: 11639
Microsoft laptop
Windows 11 Pro
Power adapter
Z-Amp serial number: 11639
Z-Amp cables: 1 used + 1 brand new
Sensors: 1 used set + 1 brand new set
New headphones
Location and shipping:
Available for local pickup in the UK or insured shipping (covered by the buyer)
Price: Reasonable offers welcome. Serious buyers only. [email protected]
2 posts - 2 participants
]]>This retails for around $35K. Asking $16K.
Please reach out if interested to: [email protected]
Thank you,
Amy Palmer, PsyD, BCN, QEEG-DL
1 post - 1 participant
]]>I am selling my lightly used - roughly 300 sessions - Summer 2020 Neuroptimal Neurofeedback machine on standard Microsoft hardware/software.
I have new sensors purchased from official site; new paste; original Zamp/wires. I just purchased 2 year ESET antivirus and premium home security for the laptop. Zamp serial number: 8469.
Surface Pro 7+ 11th Gen Intel Core i5-1135G7
Windows 11 Pro, 8 GB RAM, 128 GB SSD
Condition: Excellent/like new.
Hardware: well-kept labtop, Zamp, and original cables.
This machine was originally purchased for family and personal use. It was intended to eventually roll into a business however my life has turned me onto a new career. I live in Tsawwassen BC; available for pickup or insured shipping).
Contents:
1x Z-amp
2x Sensors
1x Surface Pro PC
1x Surface Power Adapter
1x Rugged Surface Pro Protective Case
1x 128 GB Micro SD Card & Micro SD Card Adapter
1XUSB Cable
1x Panasonic Stereo Headphones with soft sleeves for more adaptive listening experience
1x Surface Sleeve
3x containers of Ten20 Conductive Electrode Paste (1 has used 10% roughly)
Price: $7500 CAD.
Please serious buyers only.
Thank you.
1 post - 1 participant
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]]>Asking $3000
6 posts - 4 participants
]]>I’m selling my Sens.ai neurofeedback headset, one of the most advanced brain training devices out there.
It’s designed for focus improvement, anxiety reduction, emotional balance, and overall cognitive performance – works great for ADHD, stress regulation, or mindfulness training.
Price: 804€
(937$)
Condition:
• Excellent – gently used, fully functional
• Comes with all original accessories (charger, case, etc.)
• Works perfectly with the Sens.ai app (membership not included)
Shipping:
• Ships from the Czech Republic (EU)
• Shipping method and price can be discussed individually – I’m flexible and open to what works best for you
Payment:
• Preferred payment method: PayPal Goods & Services
→ protects both buyer and seller
→ buyer is fully covered against scams or defective items
Quick sale preferred – feel free to DM me with offers or questions!
1 post - 1 participant
]]>Selling my Neuroptimal device. It’s a personal system with 75 sessions left (worth $750), has Neuroptimal 3,5 version. It comes with zAmp, set of sensors and usb cable. Laptop is not included. You will have to order a brand new replacement from Neuroptimal for $1345 and make licence transfer.
My asking price for licence, sessions and zAmp is $900
A great deal if you want a brand new device for ~half price. Brand new personal Neuroptimal device costs $6000, unlimited $10000.
Contact me [email protected]
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]]>The system was purchased for $12,095.94 USD.
Zengar currently charges $495 for license transfer; either you or I can make that payment.
I’m asking for $7500 CAD or $5500 USD for the system. We can discuss shipping charges depending on the destination.
3 posts - 2 participants
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