Cog Psyc Ch 2 Quiz

Localization of function in the brain

-Cortex made up of 4 lobes, functions are localized to specific areas, not spread out over entire brain -Certain behavior is controlled by specific area of brain. Destroy area, destroys the behavior

grandmother cell

A hypothesized type of neuron that responds only to a very specific stimulus, such as a person's grandmother. A neuron that responds to a particular object at a conceptual level, firing in response to the object itself, a photo of it, its printed name, and so on.

speed of nerve conduction

Depends on the thickness/diameter [degree of myelination] of the nerve fiber/myelin sheath

The brain asymmetry demonstration does not account for the possibility that people may just have a general left-view bias, a bias for processing information from the left to the right.

False

The _____ lobe of the cortex receives information from all of the senses and is responsible for coordination of the senses, as well as higher cognitive functions such as thinking and problem solving.

Frontal

What makes the brain of a split brain patient unique

Split-brain patient have a condition which results from surgery that isolates the brain's two hemispheres by cutting the fibers (corpus callosum) connecting them. Therefore, information is not shared between the brain's right and left hemispheres.

specificity coding

The representation of a specific stimulus by the firing of neurons that respond only to that stimulus. An example would be the signaling of a person's face by the firing of a neuron that responds only to that person's face.

Early studies of brain tissue that used staining techniques and microscopes from the 19th century described the "nerve net." These early understandings were in error in the sense that the nerve net was believed to be

continuous

Groups of neurons or structures that are connected within the nervous system are called ________.

neural networks

If the intensity of a stimulus that is presented to a touch receptor is increased, this tends to increase the _____ in the receptor's axon.

rate of nerve firing

distributed coding

representation of objects by patterns of activity across many regions of the brain

The idea of a grandmother cell is consistent with

specificity coding.

Action potentials occur in the

start of the axon

The brain asymmetry demonstration predicts that right handed participants will have a higher hit rate for words shown in the right visual field...

than in the left visual field

brain asymmetry

the degree to which the two sides of the brain respond differently

If you show a split-brain patient a word in their right visual field they ...

would be able to say the word aloud

temporal lobe

A region of the cerebral cortex responsible for hearing and language.

occipital lobe

A region of the cerebral cortex that processes visual information

parietal lobe

A region of the cerebral cortex whose functions include processing information about touch.

Which of the following is consistent with the idea of localization of function? Brain areas are specialized for specific functions. Neurons in different areas of the brain respond best to different stimuli. Specific areas of the brain serve different functions. All of the above

All of the above

Which of the following neural components is NOT found at the receiving end of neurons?

Axon

Which of the following statements is true?

Right handed individuals show more brain asymmetry than left-handed individuals

primary receiving areas

first areas of the cerebral cortex to receive signals from each of the senses

Brain-imaging techniques can determine all of the following EXCEPT the structure of individual neurons. areas of the brain activated during cognitive tasks. patterns of blood flow in the brain. localization of brain activity in response to a specific stimulus.

the structure of individual neurons.

A split brain patients would have trouble catching/blocking an object that enters their left field of view with ...

their right hand

In a procedure called diffusor tensor imaging (DTI), the way in which ________ diffuse(s) along the length of a nerve fiber is measured to determine how different nerves communicate with each other.

water

subtraction techniques

what MRI technique allows for the visualization of vascular structures