week 5 cog neuro (lecture 9)

Which part of the neuron conducts action potentials?

• A (dendrites)

• B (soma / cell body)

• C (axon)

• D (axon terminal)

Answer explanation

In the provided image, which shows a small section of the brain, what is the name of the grooves labeled as "B"?

Answer explanation

The sulci are the "grooves" and the gyri are the "bumps" or "folds" in the cortex.

What kind of slice is pictured?

• Sagittal

• Frontal / Coronal

• Axial / Horizontal

• Temporal

Answer explanation

Draw an arrow in the direction the action potential travels above the right neuron.

Answer explanation

The action potential always travels from the dendrites towards the axon terminal.

• Rate coding communicates information by varying the __________ of action potentials, while temporal coding relies on the __________ of action potentials to encode information.

• duration; location

• frequency; timing

• frequency; amplitude

• timing; intensity

Answer explanation

After hitting the back of my head, my vision became blurry, and I started seeing flashes of light. I most likely injured my __________ lobe, which processes visual information.

Which of the following functions are controlled by the contralateral organization of the brain? Select all that apply.

• Seeing objects

• Moving body parts

• Hearing sounds

• Speech

Answer explanation