Explain the difference between place theory and frequency theory in regard to perception of pitch.

Place theory states that the perception of pitch depends on what area of the basilar membrane is vibrating. In other words, the frequency of tone that is detected by the brain depends on which area of the basilar membrane is most actively vibrating upon encountering sound. Frequency theory claims that the perception of pitch depends on the rate at which the entire basilar membrane vibrates. The whole basilar membrane vibrates in response to sound. A higher pitch is heard when the basilar membrane vibrates at a higher frequency.

Explanation:

Edge 2021

garcinia cambogia became popular worldwide after being featured on the dr. oz show in 2012.

it is a small, green fruit, shaped like a pumpkin.

the skin of the fruit contains hydroxycitric acid (hca). this is the active ingredient in garcinia cambogia extract, which is marketed as a diet pill.

how it works: animal studies show that it can inhibit a fat-producing enzyme in the body and increase levels of serotonin, potentially to reduce cravings (1, 2trusted source).

effectiveness: one study with 130 people compared garcinia against a dummy pill. there was no difference in weight or body fat percentage between groups.

a 2011 review that looked at 12 studies on garcinia cambogia found that, on average, it caused weight loss of about 2 pounds (0.88 kg) over several weeks.

side effects: there are no reports of serious side effects, but some reports of mild digestive problems.