Neurocognition Flashcards
a disruption in one component of mental functioning but no impairment of another
dissociation
requires 2 patients with opposite or reciprocal deficits
double dissociation
sends and receives signals throughout the CNS and PNS
basic function of a neuron
gateway to the cortex, almost all messages entering the cortex come through the thalamus into the neocortex, the ability to coordinate info from the different parts of the brain (remembering who said what)
thalamus
just above the thalamus, primary bridge across which messages pass between the left and right halves of the cortex, allows the two halves of the brain to communicate and pass info between each other
corpus callosum
located immediately interior to the temporal lobes, crucial in LTM processes, especially conscious memory
hippocampus
Neocortex is divided into two mirror-image halves, the left and right cerebral hemispheres. The right hemisphere of the brain receives its input from the left side of the body and controls the left side. Likewise, the left hemisphere receives input from and controls output to the right side of the body. Ie: people who have a stroke on the left side of the body will often have some paralysis in the right half of the body
contralaterality
each hemisphere tends to specialize in different abilities and tends to process different types of information. Ie: left-hemisphere specializes in language processing, right-hemisphere is more specialized for nonverbal, spatial, and more perceptual information processing
hemispheric specialization
patients who have a severed corpus callosum, when given a pencil, they would be able to demonstrate how to correctly use the pencil but wouldn’t be able to name the object as a pencil (hemispheric specialization)
split brain patient
less invasive in measuring neural activity, measures brain wave patterns using electroencephalogram recordings
EEG
evaluates the momentary changes in electrical activity of the brain when a particular stimulus is presented to them
ERP
rather than injecting a person with a radioactive isotope, the MRI magnet is used to isolate molecules such as oxygen to assess where increased blood is flowing in the brain, thereby indicating heightened neural activity
fMRI
measures metabolic processes, such as blood flow
fMRI and PET scans