Final answer:
The two functional imaging techniques used in biopsychology research are PET and fMRI. PET scans use radioactive tracers to map brain activity, while fMRI tracks blood flow and oxygen levels to provide detailed, dynamic images of brain function.
Step-by-step explanation:
Functional Imaging Techniques in Biopsychology
In biopsychology research, two common types of functional imaging techniques are the positron emission tomography (PET) and the functional magnetic resonance imaging (fMRI). PET scans involve the use of a mildly radioactive tracer to map metabolic and physiological functions in the brain, showing areas of activity based on blood flow. On the other hand, fMRI operates by tracking blood flow and oxygen levels over time, providing a dynamic picture of brain activity during specific tasks. Both techniques are valuable for understanding the brain's structure and functions in various psychological conditions.
Despite their value in research and medicine, there are some differences between the two techniques. PET scans can illustrate physiological activity like nutrient metabolism and are used for diagnosing conditions such as heart disease or cancer spread. However, fMRI provides more fine-grained details and has higher temporal accuracy, making it more suitable for examining the active brain without exposure to radiation.