I hate it when my titles feel longer than the blog post itself. It’s much simpler than it sounds: these are experiments that combines several experiments that act as ‘Block and Determine’ situations that establish a connection between two parts of the brain and its function.
I’ll make it even easier for you! I’ll list them in bullet points.
Note: This does NOT describe dissociative disorders, i.e. mental illnesses such as schizophrenia and other dissociative disorders.
Single Dissociation
- Used as preliminary research for establishing a connection
- There are two regions of the brain, X and Y
- There is a task A
- When region X is damaged or lesioned, the person cannot do A
- However when region Y is damaged or lesioned, the person can still do A
In single dissociation, when a part of the brain is blocked, a function can be correlated to the patient’s lost of function from that particular lesion.
Double Dissociation
- Used to find compelling evidence for a particular theory
- There are two regions of the brain, X and Y
- There are tasks A AND B
- When region X is damaged or lesioned, the person cannot do A, BUT can do B
- When region Y is damaged or lesioned, the person can still do A, BUT cannot do B
In double dissociation, the problem and triumph one participant has because of a brain lesion in a part of the brain is the opposite problem for the person with a brain lesion in another area.
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