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Besides the 8, 16 and 32 channel versions of the LiveAmp, we also offer a 64-channel version. With the LiveAmp 64, you can record high density and high-quality EEG without mobility limitations. Just like the lower channel versions, the LiveAmp 64 is a wearable, 24-bit amplifier. As it is wireless and allows you to store your recorded data internally (i.e. on an exchangeable memory card), there are no mobility limitations. The LiveAmp 64 is easy and intuitive to use and its technical specifications leave nothing to be desired …
LiveAmp 64 at a glance
The 64-channel version of LiveAmp is available as an upgrade to the LiveAmp 32-channel amplifier. It combines two LiveAmp 32-channel amplifiers, which are interconnected through the cap connector.
If you already have a stationary EEG electrode system and use active electrodes, for example our actiCHamp, you can re-use your existing actiCAP active electrode sets and actiCAP caps with the LiveAmp 64. The only thing you need to add is two LiveAmp 32 with the 64-channel LiveAmp active electrode adapter.
On the other hand, if you already have a LiveAmp 32, it can easily be upgraded to a LiveAmp 64 to obtain high-density EEG with outstanding signal quality The LiveAmp 64 is not only the perfect solution for high-density wireless and portable EEG recordings outside of the lab, it also provides the added benefit of having two fully functional 32 channel amplifiers. This ingenuity, along with LSL integration, allows for hyperscanning – that is, recording two subjects from each LiveAmp 32. Brain Products and EASYCAP offer flexible solutions for electrode arrangement to best suit your needs, such as two 32-channel electrode bundles and caps with overlaying 64 and 32 channel counts to provide more options for your recording needs.
Of course, it is also possible to use LiveAmp 64 in combination with the LiveAmp sensor and trigger extension. This extends the system with 8 auxiliary inputs and an additional 8-bit trigger in and 8-bit trigger output – adding up to a total of 72 channels.
| LiveAmp | Technical specifications |
|---|---|
| EEG/ExG channels | |
| Number/type of channels | LiveAmp 8: LiveAmp 8 can record a total of 8 channels, referential and/or bipolar. LiveAmp 16: LiveAmp 16 can record a total of 16 referential channels with a maximum of 8 bipolar channels or 8 referential and 8 bipolar channels. LiveAmp 32: LiveAmp 32 can record either 32 referential channels or 24 referential and 8 bipolar channels. LiveAmp 64: LiveAmp 64 can record either 64 referential channels or 56 referential and 8 bipolar channels. |
| Hardware sampling rates | Select between 250 Hz, 500 Hz and 1,000 Hz. Note: Maximum wireless bandwidth cannot always be guaranteed due to external interference |
| Sampling Rate = 1000 Hz | EEG/ExG channels: Up to 32 channels (this incl. AUX and acceleration) |
| Sampling Rate = 500 Hz | EEG/ExG channels: 32 channels or more (this incl. AUX and acceleration) |
| Acceleration sensor | Built-in 3-axis acceleration sensor Three separate channels (x, y, z) Measurement range: ±2 g Resolution: 1 mg/bit, 12 bit Error: ±0.2 g (±10% of full scale) |
| A/D conversion | 24 bit |
| Resolution | Approx. 40.7 nV / bit (= 2*341.6 mV / 224 bit) |
| Measurement range | ±341.6 mV |
| LiveAmp | Technical specifications |
|---|---|
| EEG/ExG channels | |
| Signal coupling | DC (there is no high pass filter in amplifier hardware) |
| Input noise | < 2 μVpp (0.01 Hz to 65 Hz at 250 Hz sampling rate) measured with internal battery and shorted inputs |
| Input impedance | > 200 MΩ (at DC) impedance of EEG/ExG channels to GND |
| Differential input impedance | > 400 MΩ (at DC) impedance between two EEG/ExG channels or bipolar EEG/ExG channels |
| Common-mode rejection (CMR) | > 80 dB (at 50/60 Hz) |
| Low pass filter in amplifier | Third order sinc filter with -3 dB frequency depending on the sample rate: - 1,000 Hz: 262 Hz - 500 Hz: 131 Hz - 250 Hz: 65 Hz |
| Electrodes | |
| Compatible electrodes | - Passive Ag/AgCl based electrodes - Active actiCAP electrodes |
| Impedance measurement | Available for passive and active electrodes and integrated in amplifier |
| Impedance measurement range | Up to 500 kOhm |
| Wireless transmission | |
| Wireless data transmission | In 2.402 - 2.480 GHz ISM band worldwide no restrictions for using this ISM range |
| Radio frequency output power | Max. 13 dBm (approx. 20 mW) |
| Wireless transmission range | Indoor: Up to 10 m (depending on environment) Outdoor: Up to 30 m |
| Data Storage | |
| Data storage | - On recording computer via wireless transmission - On micro memory card - On recording computer and on micro memory card |
| Card type | Micro SD® card, class 10 |
| Size of memory card | 32 GB |
| Maximum file size on memory card | 4 GB |
| Data format on internal memory card | Proprietary format; can be converted to generic Brain Products data format with converter software provided by Brain Products |
| Battery and power supply | |
| Power supply | Built-in rechargeable battery; Capacity: 1,000 mAh |
| Current consumption | Max. 250 mA |
| Charging time | Approx. 4 hours at 500 mA (for example, USB port of a computer) |
| Uninterrupted recording time with built-in battery (when fully charged) | - 3 hours (wireless data transfer only and passive electrodes) - 4.5 hours (storage on memory card only and passive electrodes) |
| Dimensions and weight | |
| LiveAmp 8, 16, 32: Dimensions (W x D x H) | 83 mm x 51 mm x 14 mm |
| LiveAmp 8, 16, 32: Weight | Approx. 60 g (incl. built-in battery) |
| LiveAmp 64: Dimensions (W x D x H) | 140 mm x 83 mm x 18 mm (incl. connectors: 25 mm) |
| LiveAmp 64: Weight | Approx. 120 g (incl. built-in battery) |
| Further data | |
| Built-in trigger/marker input | Yes, 3-pin 2.5 mm phone jack; TTL compatible; active low |
| LED indicators | Battery/status LED: green, yellow, red Wireless LED: blue |
| LiveAmp USB adapter | |
| USB communication | Data rate: 12 MBit/s USB 2.0 compatible |
| Input and output voltage | 5 V |
| Maximum power transfer | 5 W |
| Galvanic isolation | 2,500 VDC |
| Dimensions (W x D x H) | 40 mm x 30 mm x 20 mm |
| Weight | Approx. 30 g |
| Cable length | Approx. 50 cm, not detachable |
| Miscellaneous | |
| Suitable for use in MR scanner room | No |
| Medical device | No |
| CE marking | Brain Products GmbH confirms the compatibility of this product according to the Directive 2014/53/EU (RED) of the European Parliament and the Council of 16 April 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of radio equipment. The Brain Products GmbH confirms the RoHS compliance of this product according to the Directive 2011/65/EU of the European Parliament and the Council of 8 June 2011 on the restriction of the use of certain hazardous substances in electrical and electronic equipment (recast published in the Official Journal of the European Union on 1 July 2011) as well as all its amendments up to and including the Commission delegated directive (EU) 2015/863 of 31 March 2015 (published in the 0fficial Journal of the European Union on 4 June 2015). |
| FCC compliance (USA) | Yes |
| IC compliance (Canada) | Yes |
For more information or to speak with the
Brain Vision Scientific Consulting Team dial
(877) EEG-4MRI or schedule a call
Billing address:
Brain Vision, LLC
1204 Village Market PL #300
Morrisville, NC 27560
Shipping address:
Brain Vision, LLC
515 N. Greenfield Parkway, Suite 100
Garner, NC 27529
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