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Facilities
BRAIN IMAGING (F)MRI LAB:
Department of Radiology of the Leiden University Medical Center
Two 1.5T systems: Philips Intera
One 3T system: Philips Achieva
7Tesla bodyscanner (Philips Medical Systems)
One dummy scanner Philips
MRI data analysis (see picture)
ELECTROPHYSIOLOGICAL LAB:
(more information)
Faculty of Social & Behavioral Sciences
INFANT LAB:
(more information)
Faculty of Social & Behavioral Sciences
PHONETIC LAB:
BEHAVIORAL LAB
3T system: Philips Achieva (see picture)
The 3T Philips MR scanner at the department of radiology is currently fully equipped with all necessary facilities to perform (F)MRI studies for cognitive neuroscience purposes. This includes a computer to generate visual and auditory stimuli and to record participants’ responses, a beamer to project visual stimuli in the MR room, an MR-compatible headphone for auditory stimulation, a screen to display visual stimuli, and 5-button response boxes for the registration of manual responses. Stimulus presentation is done using the E-prime experimental control software.
Dummy scanner Philips
For some MRI projects, it is helpful to have a dummy scanner available. In this dummy scanner, participants can get used to the MR environment before the actual MR scan is performed. This is obligatory for FMRI studies in young children.
MRI data analysis: dept. Radiology, LUMC
(see picture)
A linux computer system is available for processing FMRI data. Currently, this system consists of separate computers for data analysis. In the near future, this will be upgraded to a cluster system to increase computing power and make it work more efficiently. This system is easily accessible for all LIBC researchers in the different faculties for analysis of imaging data. The main software packages for MR data analysis on this system are FMRIB Software Library (FSL) and Statistical Parametric Mapping (SPM). The computer system is located and maintained at the department of radiology of LUMC.
Electrophysiological Lab
(see picture)
The Institute of Psychology owns four electrophysiological laboratories and several mobile and immobile facilities for physiological measurements (heartbeat, galvanic skin conductance, eye tracking etc.). The EEG labs are equipped with Biosemi Active Two DC amplifiers, featuring local amplification of physiological signals over the source, and an unfiltered throughput of physiological signals for 24-bit digitization at a maximum of 2048 samples/sec. There is one setup for 74 channel, one for 136 channel, and two for 40 channel recordings. This involves the use of an electrocap for 32, 64 or 128 positions, and 8-10 separate electrodes. Per setup there is a test room, in which subjects are seated in an adjustable chair. Two 4-button response boxes per setup are mounted at the end of each arm rests. Alternatively, responses can be sampled through a microphone (both audio recording and discrete voicekey recording), two pedals or other discrete response devices. Combinations between EEG recording, Tobii eye tracker recording and BioPac recording of peripheral measures are possible. Per setup, there is a PC for recording time series, and a PC for stimulus presentation. The stimulus presentation PC controls two identical 19" 100 Hz CRT monitors or LCD monitors. Auditory stimulus presentation is possible with a stereo air pulse head phone system or mini speakers. Stimulus presentation takes place using the E-prime 2 experiment control software. Stimulus presentation time and responses are recorded along with EEG. Monitoring data acquisition is done with LabView data acquisition software. Off-line analysis of EEG takes place using Brain Vision Analyzer or BESA software.
The Infant Lab at the Faculty of Social & Behavioral Sciences
(see Picture)
The faculty of social sciences owns several infant labs. These facilities allow for experimental studies on babies, infants, and children together with their parents. Computer systems and screens are adapted to allow for stimulus presentation to young participants, the monitoring of eye and head movements, and the measurement of manual or foot responses. Multiple video cameras are installed to record and store the behavior of the participant and their parents, and to integrate these recordings with the stimuli presented at the same time. This way, behavioral reactions can be directly associated with stimulus presentation. Currently, the labs are equipped and used to carry out psychological, educational, and linguistic studies.
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