Psychology Lecture 6 9/25/2012 7:43:00 AM
o Slicing the human brain.
o Viewing macrostructures with the human eye or
microstructures with a microscope.
o Appropriate for cadavers.
MRI (Magnetic Resonance Imaging)
Advantage: Provides high resolution images of the human brain.
o Static. Provides an image of the structure but does not
indicate the function of the structure.
o Resolution is limited (cannot see single cells)
o Very expensive
Functional Techniques (observing the active brain)
What areas of the brains are responsible for different animal and
In the clinical setting: Observe functions lost because of brain injury
(trauma, stroke, tumours, etc).
Problem: human brain injures are often widespread and not higly
In the experimental setting: Lesion a specific part of animal brains
to determine its function.
Stimulate a specific area of the brain to observe the function it
Problems: in many cases, it is difficult to know just what an animal
is experiencing. Higher mental states may well differ across species. How applicable
are these studies to humans?
PET (Positron Emission Tomography)
Advantage: provides an image of the function of various