psych 3 Flashcards
what are the four lobes in the brain?
1) Frontal Lobe = Conscious movement (motor cortex), executive functions, language [1] (Broca’s area), reasoning, judgment, problem-solving, etc.
2) Parietal Lobe = Tactile sensation, spatial reasoning, some language [2]
3) Temporal Lobe = Hearing/language [2] (primary auditory cortex), memory (hippocampus)
4) Occipital Lobe = Vision (primary visual cortex)
what are the structures associated with the forebrain (prosencephalon)?
cerebral cortex, thalamus, hypothalamus, limbic system, basal ganglia,
what is the function of cerebral cortex?
executive functions, complex perception and cognition.
what is the function of thalamus?
consciousness (sleep/wake) relay between subcortical areas and cerebrum
what is the function of hypothalamus?
hunger thirst emotion (2*); major endocrine f(x) via releasing hormones to th pituitary gland.
what is the function of limbic system?
emotions (1) memory
what is the function of basal ganglia?
voluntary motor control, procedural memory.
what are the structures associated with the midbrain (mesencephalon)?
superior colliculi and inferior colliculi
what is the function of superior colliculi?
visual motor reflexes
what is the function of inferior colliculi?
auditory center hearing reflexes
what are the structures associated with the hindbrain (rhombencephalon)?
medulla oblongata, pons, cerebellum, reticular formation
what is the function of medulla oblongata?
breathing, heart rate, digestion
what is the function of pons?
sensory and motor tracts between medulla and cortex
what is the function of cerebellum?
balance regained motor movement
what is the function of reticular formation?
states of consciousness (sleep–> wake)
what is the function spinal cord?
reflexes bundled tracts to and from peripheral nervous system
What is the function of the pineal gland in the forebrain?
secretes melatonin, regulates sleep receives input from retina regarding circadian rhythms.
What is the function of the amygdala (forebrain, limbic system)?
emotion, motivation, implicit emotional memory
What is the function of the hippocampus (forebrain limbic system)?
memory consolidation from short term to long term.
What is the function of the posterior pituitary (forebrain) ?
secretes antidiuretic hormone (ADH: vasopressin) and oxytocin
What is the function of the anterior pituitary?
secretes FSH, LH, ACTH, TSH, Prolactin and GH (FLAT PEG)
1) Herpes Simplex Encephalitis (HSE) is viral infection of the central nervous system caused by the same virus responsible for cold sores. Symptoms include memory loss, confusion, and personality change. Which portion of the brain is most directly impacted by HSE? A) inferior colliculi B) limbic system C) medulla oblongata D) cerebellum
B- The symptoms given may or may not be precise enough to identify an exact brain region. Memory loss could result from a loss of function of many different regions, as could the rather general term “confusion.” Personality change might infer emotional or motivational changes, which would lead one toward the limbic system, but the hypothalamus and the cerebral cortex also play important roles. This question is still fair, however, because all of the distractors are easily ruled out. Answer A, inferior colliculi, is very specific to auditory function. Answer C, medulla oblongata controls vital functions such as breathing and heart rate. Answer D is most commonly associated with balance and refined motor functions. Thus Answer B is the only possible answer. One may not feel confident it is the source, but it cannot be ruled out, and Answers A, C and D can be ruled out.
what are non invasive methods to study the brain?
Electroencephalography (EEG), Transcranial Direct Current Stimulation
(TDCS), Regional Cerebral Blood Flow (rCBF)
what are invasive methods to study the brain?
Direct Electrode Stimulation (open cranium, during brain surgery), Human Brain Injury Case Studies, Extirpation of brain regions in lab animals.