PSYCH 2NF3 Lecture Notes - Lecture 35: Transcranial Magnetic Stimulation, Pneumoencephalography, Radiography
22 Jan 2019
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When we are stimulating the brain, we are inducing the change. Electrical current used to stimulate brain tissue through two ways: intracranial brain stimulation, transcranial magnetic stimulation (tms) Deep brain stimulation (dbs: electrodes implanted in the brain to stimulate the tissue. Use in clinical trials / treatment for different diseases such as parkinsons. Pro: can get down into deep structures of the brain. Unlike dbs, can only get to the cortical surface. These are often used in the er in hopsitals to quickly detect bleeding: conventional radiography. X-rays are absorbed to different degrees by different tissues. Helps with seeing fractures and gross brain abnormalities. Scanner shots x rays into skull and brain: different parts of your brain absorb x ray differently. Easy and quick: but not the best at detecting tumours (because grey / white matter are sometimes hard to differentiate: pneumoencephalography. Small amount of cerebrospinal fluid (csf) is removed from the subarachnoid space and replaced by air.
