Psych quiz #2

When Latoya into a cold lake, she feels like she's freezing. After A few minutes she no longer notices the cold and feels comfortable in the water. The process she's experiencing is called:

Sensory adaptation

By examining the axons of giant squids, Huxley and Hodgkin discovered that the voltage of a neuron's ——- is typically around -70 millivolts

Resting membrane potential

As part of an experiment, Feng is seated in front of a blank computer screen. On each trial, an object appears and the task is to name the object as rapidly as possible. The object is either presented alone or within a scene. For example, a chicken may be presented alone or in a barnyard. Feng is significantly faster at naming the object when it is presented in a scene. This result of faster reaction times is evidence for:

Top-down processing in visual perception

John experienced a traumatic brain injury as a result of a car accident. After the accident he had difficulty with planning and decision making. Given these symptoms, what area of the brain do you think might have been impacted by the accident?

Frontal lobe

Jing is a professor at UCLA, she studies how alcohol might affect balance and coordinated movement. What area of the brain do you think she would be most interested in investigating?

The cerebellum

Mary is told by her physician that her symptoms are caused by a loss of myelin. Her diagnosis would most like be

Multiple sclerosis

____________neurotransmitters make it more likely that a neuron will generate an action potential, whereas _____________ neurotransmitters make it less likely that a neuron will do so.

Excitatory : inhibitory

During a hearing test, many sounds were presented at such a low level of intensity that Javier could only detect them 10% of the time. These sounds were below Javier's:

Absolute threshold

Alejandra was in an automobile accident and suffered an injury to her brain resulting in paralysis (the inability to move) of her left arm. What part of Alejandra's brain was most likely injured?

Right primary motor cortex

The _____ are the small branches radiating from a neuron, which receive messages from other cells. The —- - are the structures at the far end of the axon that send chemical messengers to other cells,

Dendrites: terminal buttons

Which is true about MRI and f MRI

MRI can tell us information about the structure or anatomy of the brain, whereas f MRI measures brain activity by detecting changes in bloodflow