PSY320- CH.15

Based on what is known about body rhythms, you can maximize your ability to pay attention while studying by taking a break approximately every ______ minutes.

90

How long arecircadian rhythms?

about 24 hours

Dr. Smith has been living in his fallout shelter for the last several months with no clock and no contact with the outside word. His activity cycle is probably ______

around 25 hours

Many industrial accidents occur at what time

between midnight and 4 am

During Arial's brain surgery, the suprachiasmatic nucleus was damaged. Afterward, she probably experienced ________.

fluctuations in body temp

Although many blind individuals have difficulty maintaining circadian rhythms, some are able to do so through ______.

ganglion cells that contain melanopsin

Westward travel is less disruptive of the circadian rhythm than eastward travel, in part because it is easier to ______ than to ______

go to sleep later; go to sleep when you are not sleepy

Performance increases when the difference between light levels of active vs. sleep periods is ______

great

In phase delay, an individual goes to sleep ______, while in phase advance, the individual goes to sleep ______

later; earlier

Antonio has been flying between New York and Madrid every week for the last year and often suffers from jet lag. One treatment suggested in your book is ______.

melatonin

Dr. Borgen skips lunch to avoid that afternoon dip in alertness. This strategy will ______

not be effective at eliminating the slump

In sleep deprivation studies, what is the pattern of performance?

performance declines at night and shows some recovery the next day

Melatonin is produced in the ______ gland.

pineal

Because the ______ is/are not needed for light to alter melatonin levels, individuals who are blind may show entrainment to light

rods and cones

Ultradian rhythms are ______

shorter than circadian rhythms

Light will ______ melatonin in the body.

suppress

In mammals, the ______ is the brain area most associated with biological rhythms.

suprachiasmastic nucleus

External lighting conditions alter circadian rhythms via ______

the retinohypothalamic pathway

jet lag is most severe when traveling from ______.

west to east