Flashcards in Neuropsych Deck (294)
has both exocrine and endocrine functions
8-12 Hz; most observable during resting (awake) with eyes closed
13-30 Hz; occur when individual is awake and attentive
4-7 Hz; occur during transition from wakefulness to sleep
less than 4 hz; present during stage three sleep during transition from light to deep sleep
Located in temporal lobe and include: hippocampus, amygdala, and prefrontal cortex
Basal ganglia (caudate nucleus and putamen), globus padillus, thalamus, substantia nigra, and cerebellum
Inability to express emotions, despite feeling them; persons with Kluver-Bucy syndrome are unable to feel emotions.
Invovled with processing cognitive information, emotion regulation,a nd autonomic control
superior to genu of corpus callosum; plays a role in cognitive function, including; executive function, response selection, negotiating conflict, and autonomic control; sensitive to task difficulty and novelty
located inferior to genu of corpus callosum; associated with emotional function; implicated in processing emotional information and regulating emotional response
Medial Prefrontal Cortex (mPFCA
Interfaces with both cognitive and emotional systems. Thought to be involved w/distinguishing task-relevant info from task-irrelevant info.
Posterior Cingulate Cortex
pCC has been showns to relate to inhibition processes as well as engagement level during a task. Abnormal activity in subgenual cingulate cortex observed in depressed individuals
Functions to inhibit actions that would interfere with smooth motor output of the intended action. Primary neurotransmitters are GABA and dopamine, but receive noradrenergic and serotenergic inputs as well.
Dysfunction of Basal Ganglia
Parkinson's, Huntington's, OCD, Tourette's, ADHD, and Cerebral Palsey
Reticular Activating System
Involved in regulating states of arousal and activity, and helps maintain circadian rhythm
Forebrain; becomes the telencephalon and diencephalon
hindbrain; becomes the met encephalon and the myencephalon
Outer most layer of the brain
Left hemisphere of brain
Dominant in most people; location of language functions; associated with analytical and rational thought; calculates, communicates, abstract cognitions, and makes exective decisions; processes info in right visual field; associated w/processing of positive emotions
Right hemisphere of brain
Associated with visual-spatial skills, creativity, nonverbal memory, and intuitive thought; allows us to perceive stimuli as a whole, facilitating out ability to read maps or draw sketches of 3D objects; negative emotions, particularly fear, anger, and pessimism; processes info in left visual field
Implication of lateralization of function after stroke
Depends on hemisphere affeccted; in left hemisphere more likely to affect language than right. In right occipital lobe, may result in disturbances in visual processing of info in left visual field.
AKA contralateral neglect; individual is unaware of info on one die of his or her body or environment; occurs most commonly after stroke to right parietal lobe (neglect is for left side). Most often associated with visual processing
Unawareness of one's neurological symptoms
Bundle of axons that connects the hemispheres and allows for communication
the severing of corpus callosum; May be done to attempt to control epilepsy; Pts are only able to verbalize what they see in the right visual field (info in left field sent to right hemisphere where language is processed). If presented to left visual field, pt would not be able to verbalize but could point to what they saw.
Pioneer of split brain research. Nobel prize in 1981.
bundle of fibers that connects to the limbic systems in both hemispheres. Remains intact in split-brain pts. Allows for communication of rudimentary emotional stimuli (if violent movie presented to left visual field, pt would not be able to verbalize what was seen but may verbalize feeling afraid)