Unit 2A: Assoc. Areas-klinfelters Syndrome Flashcards
Wernicke’s area
Gives people the ability to comprehend and interpret both spoken and written language.
Association areas
Involved with higher mental functions such as learning, remembering, thinking, and speaking. They interpret, integrate, and act on the information processed by the sensory areas. Occupies 75% of the cerebral cortex, mostly in the left hemisphere.
Broca’s area
In the frontal lobe; usually in the left hemisphere; directs the muscle movement involved in producing speech or language expression.
Angular gyrus
Interprets written word into internal monologue (like when you read). Located in the occipital and temporal lobes.
Aphasia
Impairment in producing and understanding language, caused by damage to brocas and wernickes areas. If wernickes is affected, one may sound fluent but lack syntax and grammar.
Apraxia
Inability to organize movements and a disorder of motor planning.
Agnosia
Difficulty processing sensory input. One can’t identify things or people, can’t recognize sounds, smells, touch. Can’t recognize those they know or things they know.
Alexia
Loss of the ability to comprehend the meaning of written or printed words and sentences. Inability to read and understand what you’ve read.
Brain plasticity
The brains capacity for modification as evident in brain recognition following damage(especially in children) and in experiments on the effects of experience on brain development. Brain plasticity helps firm, learn, and comprehend the new material. Forms new neural networks. Body can replace things like hemispheres.
Phantom limb
When one loses a limb but feels that it is still there.
Phones gage
Left frontal lobe was damaged-separated from his limbic system. He became impulsive and animalistic.
Split brain
Cutting the connecting fibers(corpus callosum) between them. Separated the hemispheres. Roger Sperry was the first to try. Usually done to those with epilepsy.
Corpus callosum
The large band of neural fibers connecting the two brain hemispheres and carrying messages between them.
Brain lateralization
Also known as hemisphere specialization. How each hemisphere specializes in specific things. Deals with linear processing, analytical, and reasoning.
Left hemisphere
Deals with the right side of the body. Deals with logic and calculation. Deals with present and relates to past (or our ability to talk about it).
Right hemisphere
Controls the left side of the body. Deals with intuition, imagination, visual perception, the holistic perspective and deals with present and relates to future. Perception of spatial and nonverbal concepts.
Endocrine system
The body’s “slow” chemical communication system; secrets hormones into the bloodstream.
Hormones
Chemical messengers produced in one tissue and affect another.
Pituitary gland
Controlled by the hypothalamus. Is the “master gland”-controls other glands. Regulates growth.
Adrenal glands
Secrete epinephrine and norepinephrine which help arouse the body in time of stress. Deal with fight or flight along with sympathetic.
Thyroid glands
Secretes hormones that regulate growth and development through the rate of metabolism. Tells us how our body uses it’s energy. Hypo-slow/hyper-fast thyroidism.
Sex glands
Ovaries: release estrogen
Tested: release testosterone
Genetics
The application of the principles in evolutionary theory to the study of behavior. Contain segments of DNA that produce proteins that control human traits(genes)
Traits
Distinctive characteristics or behavior patterns determined by genetics.
Dominant traits
More likely to be expressed in offspring
Recessive trait
Less likely to be expressed in offspring.
Genotype
All possible combinations of ones genes.
Phenotype
An observable result in characteristics of an individual. Visual/what you actually get.
Identical twins
Share the same genetic material. Develop from a single fertilized egg that splits.
Thomas Bouchard
Studies identical twins raised apart.
Down syndrome
A defect involving chromosomes. Usually have broad or flat faces, short, stubby fingers, and ski fold at their eyes(makes them look Asian).
Huntington’s Chorea
A hereditary disease marked by degeneration of the brain cells; the muscles become impaired and begin to degenerate.
Turner’s syndrome
Only one x-chromosome(23rd pair), causing developmental abnormalities and infertility. Only in women, unusual shortness, webbed neck’s, differences in sexual development.
Klinfelter’s syndrome
Extra X-chromosome, only men, minimal sexual development, feminine characteristics, extreme introverts, have small testicles.