At UCSF and Stanford, data were acquired using a 128-channel TDT recording system (Tucker-Davis Technologies, Alachua, FL), filtered online at 0.5–300 Hz and sampled at 3,052 Hz (1,526 Hz for one participant). At Johns Hopkins, data were recorded at 1,000 Hz, with a low-pass 300 Hz analog anti-aliasing filter using a 128-channel Stellate Harmonie system (Stellate Systems, Inc., Montreal, Canada). At CMPC, data were recorded at 1,000 Hz using a Nihon-Kohden Neurofax EEG-1200 system (Tokyo, Japan). Analog channels (microphone, photodiode, speaker output) were recorded synchronously with ECoG signals at 24.4 kHz (UCSF, Stanford) or 1000 Hz (Johns Hopkins, CPMC). ECoG data were recorded using a subdural electrode as reference (an electrode with minimal or stable signal located away from cortical areas of interest) and a scalp electrode as ground. Sampling rates, online filters, and amplification across all recording systems were set to allow comparability across recording sites for the broadband high gamma (HG, 70–150 Hz) signal.
Neurofax eeg 1200 system
Manufactured by Nihon Kohden
Sourced in Japan
The Neurofax EEG-1200 system is a digital electroencephalography (EEG) device manufactured by Nihon Kohden. The system is designed to record and analyze brain electrical activity. It includes a patient unit, a computer with software, and necessary accessories for EEG data acquisition and processing.
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Lab products found in correlation
2 protocols using neurofax eeg 1200 system
1
Multisite ECoG Recording and Comparison
2
Multisite ECoG Recording and Comparison
Check if the same lab product or an alternative is used in the 5 most similar protocols
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At UCSF and Stanford, data were acquired using a 128-channel TDT recording system (Tucker-Davis Technologies, Alachua, FL), filtered online at 0.5–300 Hz and sampled at 3,052 Hz (1,526 Hz for one participant). At Johns Hopkins, data were recorded at 1,000 Hz, with a low-pass 300 Hz analog anti-aliasing filter using a 128-channel Stellate Harmonie system (Stellate Systems, Inc., Montreal, Canada). At CMPC, data were recorded at 1,000 Hz using a Nihon-Kohden Neurofax EEG-1200 system (Tokyo, Japan). Analog channels (microphone, photodiode, speaker output) were recorded synchronously with ECoG signals at 24.4 kHz (UCSF, Stanford) or 1000 Hz (Johns Hopkins, CPMC). ECoG data were recorded using a subdural electrode as reference (an electrode with minimal or stable signal located away from cortical areas of interest) and a scalp electrode as ground. Sampling rates, online filters, and amplification across all recording systems were set to allow comparability across recording sites for the broadband high gamma (HG, 70–150 Hz) signal.
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