PSYB64H3 Lecture Notes - Pia Mater, Grey Matter, Saltatory Conduction
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Hippocampus involved with learning and memory. Olfactory lobes can also generate new cells.
We can use cell stains to predict overall health of the tissue.
Imaging – Look at live brains and how they behave:
−CT's : Uses computers to enhance computer images.
−PET Scans : Look at patterns of activation. Different parts of the brain light up for different
−FRMI : Take measurments of blood flow..if an area is receiving more blood flow then its more
−MEGS – Changes in magnetic fields. Certain areas of brain are activated for particular tasks.
Lesion studies are used to destroy a particular area of the brain to find out its role.
Rostral - towards the front
Caudal – towards the back
Distall away from the body, proximal towards.
Coronoal – cutting through from top to bottom
horizontal section- brain cut in half.
blood supply really important for brain..even though its really small..blood demands are huge.
Pia mater follows contours of the brain. Covers all the grey matter.
In central nervous system, there are three layers. Peripheral has only two layers, the arachnoid layer is
missing. (page 7)
Brain has some empty spaces that lack brain matter. Called ventricles (page 8). Spinal fluid flows
through all of these. The brain is like playdough..you can shift it play around with it but its incredibly
Brain not all grey matter, there are empty spaces. These are part of ventricular system.(see page 8)
Spinal cord can be broken down into sections. See slide 14. Damage to the hind section, person will
suffer. Controls most basic functions.
Thalamus – relay station for info..info comes in..and goes out
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