Our two brains!. Recording Brain Activity Images of the Brain MRI Scan- uses magnetic fields, radio waves, computers to map brain structures CT Scan-

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Presentation transcript:

Our two brains!

Recording Brain Activity

Images of the Brain MRI Scan- uses magnetic fields, radio waves, computers to map brain structures CT Scan- Computer enhanced topography/ x-ray of structures PET Scan- examines brain function and chemical activity

MRI vs fMRI MRIFMRI Focused on anatomical structureFocused on metabolic processes (using blood flow) Shows processes as they happen in spaceShows processes as they happen in time Being widely used Being used sparingly Source: mri-and-fmri/ mri-and-fmri/

Which face looks happier?

Splitting the Corpus Callosum

Which face looks happier?

Problem If we flash the picture of a cat to the right hemisphere of a split brain patient.. 1.Would each hemisphere observe the cat? 2.Would the person be able to say the word cat? 3.What would the person verbally report seeing? 4.How could the person correctly identify what was shown?

Specialization in the Brain’s Hemispheres

Lobes of the Brain

The Brain

Phineas Gage

Homonculus

Brain Plasticity Hemispherectomy and brain plasticity Mirror therapy for Phantom limbs part 1 Mirror therapy for Phantom limbs Part 2

The Endocrine System Glands - secrete chemicals into bloodstream - help control bodily functioning - Hormones: chemical substances released by the glands (30 different) - Hypothalamus: controls eating, linked to emotion & reward center, controls the endocrine system. - Pituitary Gland: “Master Gland” – regulates growth and controls other glands

The Endocrine System The Endocrine System is the body’s “slow” chemical communication system. Communication is carried out by hormones synthesized by a set of glands.