Research
Our lab conducts electrophysiological experiments. In these experiments we record electrical activity of neurons in the brain from the scalp surface. The method of recording electrical brain activity is called Electroencephalography (EEG), and it is a safe, non-invasive method. In our laboratory, a cap of 64 to 128 electrodes is placed on the head. Each electrode makes contact with the scalp via conductive water-based gel. During a study the subject listens to, and/or watches some stimuli. These stimuli are called events, and the electrical activity associated with these events are called Event Related Potentials (ERPs). Consistent electrical changes to a category of events can be seen by averaging together the electrical activity from many repetitons of these events. This activity is seen as a series of positive and negative-going deflections. The timing and size of these deflections, and the location of this activity on the scalp is used to make inferences about the time-course of processing in the brain and the location of the source of this activity.
1. Preparation
ERP ERP
2. In the acustic room
ERP ERP
To register for experiments (for HUJI students) or entering the experiment database (HCNL members) go to http://experiments.huji.ac.il