The grapevine™ Neural Interface Platform brings an unprecendented level of compact design and integration to high-density neural interface applications. Initial configurations support high-density EMG, surface recording, and extracellular recording applications with online spike processing. The grapevine™ can be configured and customized with the companion trellis Application Suite using your own source code.

The grapevine™ platform brings an unprecedented level of compact design and integration to high-density neural interface applications. The system includes software for data display and storage, as well as the ability to add user-specific processing code for interfacing to external systems in realtime. Stimulation options are currently in development.

neural interface processor technical specifications

	input channels	up to 512 surface electrodes [EMG, ECG, EEG, ECoG, etc.], or up to 256 extracellular electrodes
	connections	gigabit ethernet and support for USB2.0 devices
	safety	UL 60601 compliant
	dimensions	19 x 12 x 2.5 cm [7.5 x 4.5 x 1.0 in]
	power	12VDC input, 20W
	mounting	75 mm VESA
	options	portable battery power; wireless options with USB adapter

front end module technical specifications

channels	surface: 16 or 32 extracellular: 32
filtering	surface: 0.01 HZ HP, 4kHz LP extracellular: 0.01 HzHP 8kHz LP
input connection	Samtec, Omnetics, or custom
input range	±6.5 mV
DC offset handling	±2.5V
max input voltage	±5.0V
input referred noise	<2.1 µVrms
CM rejection ratio	>90dB @ 50/60 Hz
sampling resolution	16 bit, .25 µV/bit
sampling frequency	up to 30 ksps
linearity/accuracy	>14 bit
input impedance	25MΩ II 20pF
input bias current	<25 pA
weight	3.9 g
dimensions	34 x 48 x 4.8 mm [1.43 x 1.88 x 0.188 in]

The trellis Application Suite is designed to display and store recorded data, set up closed loop stimulation, and configure the grapevine™ system. It is an open-source and multi-platform application suite, currently consisting of seven main components. The suite source code is available for both the scientific community and the general public under the terms of the GNU General Public License version 2.0, as published by the Free Software Foundation. We provide the open architecture to enable users to tailor the applications to their specific needs. We encourage the user community to provide feedback or even participate in the development of the application suite.

The programs were written using the C++ based QT cross platform development toolset by Trolltech. They can be run on Windows XP, Windows Vista, Mac OS X, and multiple flavors of Linux and UNIX. The QT toolkit ensures high performance and native look and feel on the supported platforms.

current projects

To see projects currently in development, click here.

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