Unit 1 Quiz 2

Which tool is used for examining brain structure and function by measuring electrical activity?

• Magnetic Resonance Imaging (MRI)

• Electroencephalography (EEG)

• Positron-emission tomography (PET)

• Computerized Axial Tomography (CT)

During a sleep study, David observed which stage of sleep is characterized by rapid eye movement and vivid dreams?

• Stage 1

• Stage 2

• Stage 3

• REM

Which principle of sensation involves the conversion of physical energy into neural signals?

• Sensory adaptation

• Transduction

• Signal Detection Theory

• Absolute threshold

What is the role of the parasympathetic nervous system?

• To increase heart rate

• To prepare the body for emergencies

• To conserve energy and promote relaxation

• To control voluntary muscle movements

During a visit to the hospital, Aria needs to undergo a scan that uses magnetic fields and radio waves to create detailed images of her brain. Which imaging technique will be used?

• EEG

• PET

• MRI

• CT

What does signal detection theory primarily examine?

• The factors that influence our ability to sense a stimulus

• The impact of prolonged exposure to stimuli

• The transformation of sensory input into neural activity

• The relationship between stimulus intensity and perception

What is the primary function of the peripheral nervous system?

• To control involuntary actions

• To sense and respond to stimuli

• To regulate the sleep-wake cycle

• To detect changes in the environment

What is the term for the minimum level of stimulus intensity needed to detect a stimulus?

• Absolute threshold

• Difference threshold

• Sensory adaptation

• Signal detection

What is the function of the optic nerve in the visual system?

• To focus light

• To transmit visual information to the brain

• To detect color

• To adjust the size of the pupil

Which color pair is NOT part of the Opponent Processing Theory?

• Red-Green

• Blue-Yellow

• Black-White

• Purple-Orange