Once the "Threshold" for an Action Potential Is Reached What

question 81

Multiple Choice

Once the "threshold" for an action potential is reached what is the sequence of events that occur?
1) Potassium channels are activated and potassium ions move out of the neuron.
2) Sodium channels are activated and sodium ions move into the neuron.
3) The interior of the neuron becomes more negatively charged than the exterior.
4) The interior of the neuron becomes more positively charged than the exterior.

• A)1,3,4,2
• B)2,4,1,3
• C)4,1,2,3
• D)3,2,1,4

Understand the concepts of absolute threshold, difference threshold, and sensory adaptation.

Explain the impact and process of subliminal stimulation and priming.

Recognize the role of sensory processing in perception.

Describe signal detection theory and how expectations can influence perceptions.

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