According to the phase response curve for light, when is the best time to get light to achieve a phase delay?Group of answer choicesIn the afternoonIn the morningAfter dusk

For people with delayed sleep phase disorder, light therapy is an option. When should people with DSPD get light exposure, if they want to bring forward their sleep-wake schedule?Group of answer choicesIn the two hours before bedtimeImmediately before bedtimeTwo hours after waking upImmediately on waking up

When using light as a zeitgeber, which of the following will cause a larger circadian phase shift?Group of answer choicesRed lightGreen lightBlue light

When using light as a zeitgeber, which of the following will cause a larger phase shift?Group of answer choicesDim lightDarknessBright light

Circadian alertness is lowest at what time of day?Group of answer choicesEarly eveningEarly morningMiddayEarly afternoon

Which of the following is not the phase of light reaction?Select an answerAPhotolysisBPhotophosphorylationCCO2 reductionDLight absorption by chlorophyll