Ex. 4 Open the brackets using the most appropriate form of Participle I. 1. There are a variety of empirical methods (allow) scientists to look at brains in action. 2. Psychologists study the brain (use) lesion approaches, as well as through neuroimaging techniques (include) electroencephalography [ɪˌlektrəʊɪnˌsefəˈlɒɡrəfɪ] (EEG 3. As well as (use) for diagnostic purposes, the EEG is an effective tool of those interested in understanding the nature and functions of sleep. 4. (Visit) Berger’s laboratory at Jena in 1935, American researcher William Grey Walter noted that Berger “was not regarded by his associates as in the front rank of German psychiatrists, having rather the reputation of being a crank”. 5. The researchers found that the movement (follow) the brain stimulation only occurred when they stimulated a specific arch-shaped region (run) across the top of the brain from ear to ear. 6. Electrical stimulation of a small brain area can produce meaningful results in certain areas where timing is less important – for example, the areas (control) hunger or thirst. 7. While (provide) mild electronic stimulation to different areas of the motor cortex in fully conscious patients, researchers observe their bodily responses. 8. Functional magnetic resonance imaging (fMRI) measures blood flow in the brain during different activities, (provide) information about the activity of neurons and thus the functions of brain regions. 9. (Test), the new equipment was recommended for research in all the laboratories.