Question 2 of 21

What is the most common type of sensory hallucination, according to the National Institutes of Health?

... While hallucinations may occur in any of the five senses, auditory hallucinations -- specifically those where a voice is heard when no one has been talking -- are the most common type.

Question 3 of 21

Fact or fiction: Hallucinations are always a sign of a serious health problem.

... Fiction: While hallucinations may signal a serious health problem, they can also be completely harmless. Seeing or hearing a lost loved one, for example, is a fairly common part of the grieving process.

Question 4 of 21

Phantosmia involves hallucinations of this sense.

... Phantosmia, or olfactory hallucinations, involve smelling things that aren't really there. The phantom smells can be good or bad, and may occur in one nostril or both. Scent-related hallucinations often occur due to a head injury or respiratory infection.

Question 5 of 21

Fact or fiction: Frequent coffee drinkers are more likely to hallucinate than those who drink coffee less often.

... Fact: People who drink more than three cups of brewed coffee each day are three times more likely to experience hallucinations than those who consume less caffeine.

Question 6 of 21

In past surveys, what percentage of healthy people have reported regularly experiencing auditory hallucinations?

... The majority of people have brief experiences with auditory hallucinations from time to time, and a full 3 percent regularly experience sounds that aren't real.

Question 7 of 21

Haptic hallucinations affect this sense.

... Haptic hallucinations, which may also be known as tactile or somatic hallucinations, affect your sense of touch. Examples include feeling bugs crawling on your skin or believing you feel your cell phone vibrating in your pocket.

Question 8 of 21

What percentage of schizophrenia patients hallucinate?

... Somewhere between 70 and 80 percent of schizophrenia patients experience hallucinations. Auditory hallucinations can drown out real voices and sounds for these patients, and remain one of the most common symptoms associated with this disease.

Question 9 of 21

Classical musician Frederic Chopin suffered from hallucinations that researchers now believe were caused by this.

... Chopin suffered from frequent hallucinations, and once stopped in the middle of a performance because he saw creatures crawling out of his piano. Modern researchers believe these hallucinations were caused by Chopin's epilepsy.

Question 10 of 21

Fact or fiction: People with Parkinson's disease often experience hallucinations.

... Fact: Between 25 and 30 percent of people with Parkinson's disease experience hallucinations. Visual hallucinations are by far the most common, though a small percentage of patients may also experience auditory hallucinations.

Question 11 of 21

Fact or fiction: Abusing over-the-counter cough syrup can cause hallucinations.

... Fact: Abusing cough syrups containing Dextromethorphan, many of which are available over the counter, can lead to hallucinations and out-of-body experiences.

Question 12 of 21

According to a 2000 survey, what percentage of the general population reported having hallucinatory experiences?

... In a 2000 survey, nearly 39 percent of respondents reported having some sort of hallucinatory experience. Nearly half of those reported that these hallucinations happened less than once per month, and the majority occurred just as respondents were falling asleep or waking up.

Question 13 of 21

Fact or fiction: Some drug-induced hallucinations produce similar brain scans to those in people who are actually experiencing real stimulation.

... Fact: When researchers study an MRI of a person experiencing a hallucination induced by the psychoactive brew ayahuasca, for example, the MRI looks identical to one taken from a person actually experiencing the hallucinated action or sensation.

Question 14 of 21

Gustatory hallucinations affect this sense.

... People who experience gustatory hallucinations experience taste sensations that aren't actually real. Examples include tasting metal in your mouth for no reason or believing you taste your favorite food even when you aren't eating it.

Question 15 of 21

Charles Bonnet syndrome involves this type of hallucination.

... Charles Bonnet syndrome is a condition where people with impaired vision experience visual hallucinations. While this condition is often considered a non-psychiatric cause of hallucinations, some studies suggest that Charles Bonnet syndrome may be linked to dementia or other forms of cognitive impairment.

Question 16 of 21

What term is used to describe hallucinations that occur at the onset of sleep?

... Hypnagogic hallucinations occur just as a person is falling asleep, while hypnopomic hallucinations occur when one is waking up. Both of these conditions are closely associated with narcolepsy.

Question 17 of 21

Fact or fiction: Proprioceptive hallucinations involve delusions of grandeur and importance.

... Fiction: Proprioceptive hallucinations affect one's sense of balance or position in space.

Question 18 of 21

Seeing things on Sesame Street? For more than 15 years, the muppets believed that Big Bird was simply hallucinating this character.

... When Snuffleupagus was introduced in 1971, only Big Bird could see him, and the other muppets dismissed Snuffy as a hallucination. It wasn't until 1985 that producers ended the gag and made Snuffy visible to all the characters.

Question 19 of 21

The many hallucinations in the film "A Beautiful Mind" (2001) were a product of this disease.

... Ron Howard's "A Beautiful Mind" (2001), starring Russell Crowe, was inspired by the life of mathematician John Nash, who suffered from schizophrenia.

Question 20 of 21

Fact or fiction: Hallucinations occur when an individual misinterprets a stimulus, such as a sound or smell.

... Fiction: Hallucinations occur in the absence of a stimulus. An "illusion" involves the misinterpretation of a stimulus that is actually present.

Question 21 of 21

Fact or fiction: People taking ecstasy often experience hallucinations.

... Fiction: Unlike LSD, ecstasy does not typically cause users to hallucinate.

YOU SCORED: 0 out of 21 try again

MORE QUIZZES

Do you know your Keats from your Yeats? Take the famous poets quiz!

Does that voice sound familiar? Take the famous voiceovers quiz!

From Colombo to Castle -- try naming the fictional gumshoe in this quiz!