PMID-21240274[0] A wireless multi-channel neural amplifier for freely moving animals.
- 60 meters!
- 64 channels!
- < 4uV RMS input referred noise over 80-2.3Khz BW.
- Mounted on a backpack. Seems reasonable.
- Uses a http://www.spystuff.com/ RF transmitter for home video surveillance
- presently used with tetrode microdrive.
- Use a 'neuroplat' AFE, ref [10] {1004}.
- AC coupling, relatively narrow passband - 80 - 2.3kHz.
- Channels are oversampled: 20kHz.
- High power:
- Neuroplat 165mW,
- Transmitter 200mW,
- Headboard circuitry 100mW,
- Voltage regulators 180mW.
- Total: 545mW. That does not match with Table 1, which is 345mw. ??
- RX = http://ve6atv.sbszoo.com/platinum/docs/13cmRxDwg.pdf
- rather direct TDM decoding scheme (each channel is a pulse; receiver oversamples by 6x & weights these samples; apply HP emphasis filter to individual samples. )
- probably could get a more efficient RF encoding if they chose not to use the video link, but hey.
- Some behavioral experiments .. not interesting (?)
____References____
[0] Szuts TA, Fadeyev V, Kachiguine S, Sher A, Grivich MV, Agrochão M, Hottowy P, Dabrowski W, Lubenov EV, Siapas AG, Uchida N, Litke AM, Meister M, A wireless multi-channel neural amplifier for freely moving animals.Nat Neurosci 14:2, 263-9 (2011 Feb) |
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