advertisement
Reference Terms
from Wikipedia, the free encyclopedia

1

2

Hallucination

A hallucination is a sensory perception experienced in the absence of an external stimulus, as distinct from an illusion, which is a misperception of an external stimulus.

Hallucinations may occur in any sensory modality - visual, auditory, olfactory, gustatory, tactile, or proprioceptive (sense of balance and position in space).

Psychological research has presented the idea that hallucinations may result from biases in what are known as metacognitive abilities.

These are abilities that allow us to monitor or draw inferences from our own internal psychological states (such as intentions, memories, beliefs and thoughts).

The ability to discriminate between self-generated and external sources of information is considered to be an important metacognitive skill and one which may break down to cause hallucinatory experiences.

Note:   The above text is excerpted from the Wikipedia article "Hallucination", which has been released under the GNU Free Documentation License.
Related Stories
 

1

2


Mind & Brain News
August 12, 2020

When we say someone has a quick mind, it may be in part thanks to our expanded cerebellum that distinguishes human brains from those of macaque monkeys, for example. ...
A new blood test demonstrated remarkable promise in discriminating between persons with and without Alzheimer's disease and in persons at known genetic risk may be able to ...
Nerve cells have a special ion channel that has a key role in starting the electrical impulse that signals pain and is sent to the brain. New research finds that people who ...
Researchers conducted a first-of-its-kind study designed to investigate brain connectivity in 130 mammalian species. The ...
Latest Headlines
updated 12:56 pm ET