Our research group uses mainly the technique of electroencephalography and therefore our lab is equipped with several types of EEG equipments. Two sets are installed in a Faraday chamber to reduce the electromagnetically external noise, one of 64 channels (Brain Products) and one with 128 channels (EGI). Additionally there is a portable ERP equipment with 32 channels (ANT), which allows us to realize registers outside the lab. These systems also permit us to combine the technique of electroencephalography with other techniques, like for example the co-registration of eye-tracking and EEG, or the use of TMS and EEG. The equipment is complemented with programs (Presentations and E-Prime) and the necessary devices to present auditory or visual stimuli, including the identification and analyses of Event Related Potentials (ERPs).
In our laboratory we have a system of recording of eye movements : The double image machine of Purkinje (Fourward Technologies Inc. ) This machine projects a small infrared ray to the participant pupil in the experiment (ray quite innocuous and invisible for it), which because of the refraction with vitreous humor and aqueous eye humor forms the Purkinje images (two Small luminous dots visible inside the pupil. Through a complex system of lenses and mirrors the machine takes advantage of the position changes of the two images to calculate the exact point at which the participant is directing the fovea during the experiment, both in the vertical position and Horizontal. These measurements are performed with a temporary resolution of 1000 per second. As for its spatial resolution, this is 10 minutes of arc, which is equivalent to half character. Their high temporal and spatial resolution makes it especially suitable for experiments related to the processes involved in reading.
In the Department of Cognitive Psychology we have six cabins for shared use for conducting behavioral experiments. In them we can carry out experiments of psycholinguistics with visual presentation of stimuli, such as mobile window, lexical decision, named, priming masked, etc. For this we have different program of presentation of stimuli like E-PrimeandDMDX. In addition, our laboratory has the necessary hardware and software for the preparation and execution of production experiments and speech perception.
The functional Magnetic resonance (FMRI) is a neuroimaging technique that allows to observe the cerebral activation of various areas during the realization of a certain function or cognitive ability. It is an important non-invasive technique to understand the human brain in action. This technique measures temporal changes in oxygenation of blood flow in different regions of the brain. From these changes, researchers make inferences about the underlying neural activity and the relationship between the activation of different regions of the brain and the realization of various cognitive processes such as attention, perception, language, etc. Our team has access to the GE 3T scanner at the university Hospital of Canarias (IMETISA), whose 30% of the time is dedicated to research. In addition, we also have access to a team of transcranial magnetic stimulation (TMS), a technique that is used to stimulate non-invasively regions of the central nervous system, and can be used in combination with other techniques such as FMRI or the ERPs.