CH3 Flashcards
Corpus Callosum
thick band of nerve fibres connecting the 2 hemispheres (supports communication b/w 2 hemispheres)
Contralateral Control
each hemisphere controls opposite of body
Frontal Lobe
movement, abstract thinking, planning, memory, and judgement
Parietal Lobe
information about touch
Occipital Lobe
visual information
Temporal Lobe
hearing and language
Somatotopic Map (sensory homunculus)
each point on skin is represented by corresponding area in the contralateral cortex, but the map is distorted
Cortical Magnification
enlarged representation in cortical somatotopic map/sensory homunculus relative to skin area
Brain Plasticity
the brain’s ability to be changed
Phantom Limb Syndrome
Even after losing a part of their body, some patients continue to feel sensations where the missing part would be
Mirror box procedure
put hand inside box and see reflection and seeing that phantom hand is moving allows brain to think that hand is moving even when not there
Electroencephalography (EEG)
records electrical activity in the brain
Magnetoencephalography (MEG)
records magnetic fields generated by the brains’ electrical activity
Structural Brain Imaging
provides information about the basic structure of the brain
Computerized Axial Tomography (CT)
takes a series of x-ray photographs from different angles and shows different densities of tissue in the brain
Magnetic Resonance Imaging (MRI)
uses a strong magnetic field to line up the nuclei of specific molecules in the brain tissue
Functional Brain Imaging
provides information about the activity of the brain while people perform various kinds of cognitive/motor tasks
Functional Magnetic Resonance Imaging (fMRI)
detects the difference b/w oxygenated hemoglobin & deoxygenated hemoglobin when exposed to magnetic pulses
Positron Emissions Tomography (PET)
a harmless radioactive substance is injected into a person’s bloodstream; measure the amount of radioactivity in each brain regions
Diffusion Tenor Imaging (DTI)
: visualizes white matter pathways (fiber bundles that connect brain regions)
Transcranial Magnetic Stimulation (TMS)
delivers a magnetic pulse and deactivates neurons in the cerebral cortex for a short period, temporarily mimicking brain damage
split brains
no communication b/w the hemispheres
global processing
seeing the big picture
local processing
seeing it for what makes up the big picture
central nervous system
composed of the brain and spinal cord, receives sensory information from the external world, processes & coordinates info and sends commands to skeletal and muscular systems for action
peripheral nervous system
set of nerves that conveys information b/w skeletal muscles and central nervous system, humans have conscious control over this & use to perceive, think, and coordinate behaviours
