Preamplifiers

Features

Customizable and expandable as research needs change
Programmable referencing via cross-point switches
Multi-pole filtering

Description
Plexon preamplifiers can be used as a preamplifier with the Multichannel Acquisition Processor (MAP) or as a stand-alone amplifier for neural signals. Plexon preamplifiers accommodate up to 64 channels of spike or field potential signals or a combination of both, depending on the configuration, as well as EEG, EMG and wide band preamp boards.

Filter referencing and cut offs. All filter cutoffs can be customized according to the researcher's requirements.

Optional Designs: Two preamplifier designs are available.

A single-pole filtering design with programmable referencing via cross-point switches
A multi-pole filtering design

Preamplifiers with multi-pole filtering are recommended for improved rejection of high frequency noise (for example, magnetic eye coil signals).

The following illustration shows a preamplifier with 16 spike channels and 16 LFP signals.

The following preamplifier configurations have multi-pole filtering:

Plexon Product Number	Description (with filtering and gain)
PBX2/16sp	Preamplifier with 2-pole low-cut and 4-pole high cut filter, 16 spike channels (100Hz-8kHz, 1000x gain)
PBX2/32sp	Preamplifier with 2-pole low-cut and 4-pole high cut filter, 32 spike channels (100Hz-8kHz, 1000x gain)
PBX2/48sp	Preamplifier with 2-pole low-cut and 4-pole high cut filter, 48 spike channels (100Hz-8kHz, 1000x gain)
PBX2/64sp	Preamplifier with 2-pole low-cut and 4-pole high cut filter, 64 spike channels (100Hz-8kHz, 1000x gain)
PBX2/16sp/16fp	Preamplifier with 2-pole low-cut and 4-pole high-cut filter, 16 spike channels (100Hz-8kHz, 1000x gain) and 16 field potential channels (0.7Hz-170Hz, 1000x gain)
PBX2/16sp/16fp/16wb	Preamplifier with 2-pole low-cut and 4-pole high-cut filter, 16 spike channels (100Hz-8kHz, 1000x gain) and 16 field potential channels (0.7Hz-170Hz, 1000x gain), and 16 wide-band channels (3Hz-8kHz, 1000x gain)
PBX2/32sp/32fp	Preamplifier with 2-pole low-cut and 4-pole high-cut filter, 32 spike channels (100Hz-8kHz, 1000x gain) and 32 field potential channels (0.7Hz-170Hz, 1000x gain)

The following preamplifier configurations have single-pole filtering and programmable referencing:

Plexon Product Number	Description (with filtering and gain)
PBX/16sp-r	Preamplifier, 16 spike channels (150Hz-9kHz, 100x gain, with programmable referencing)
PBX/32sp-r	Preamplifier, 32 spike channels (150Hz-9kHz, 100x gain, with programmable referencing)
PBX/48sp-r	Preamplifier, 48 spike channels (150Hz-9kHz, 100x gain, with programmable referencing)
PBX/64sp-r	Preamplifier, 64 spike channels (150Hz-9kHz, 100x gain, with programmable referencing)
PBX/16sp/16fp-r	Preamplifier, 16 spike channels (150Hz-9kHz, 100x gain, with programmable referencing) and 16 field potential channels (3Hz-90Hz, 500x gain)
PBX/16sp/16fp/16wb-r	Preamplifier, 16 spike channels (150Hz-9kHz, 100x gain, with programmable referencing), 16 field potential channels (3Hz-90Hz, 500x gain), and 16 wide-band channels (3Hz-9kHz, 500x gain)
PBX/32sp/32fp-r	Preamplifier, 32 spike channels (150Hz-9kHz, 100x gain, with programmable referencing) and 32 field potential channels (3Hz-170Hz, 500x gain)

Plexon makes a variety of accessories that work with the preamplifier, including preamplifier power cables, preamplifier power supplies, and battery packs.