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Clouding of consciousness, also called brain fog or mental fog, [1] [2] occurs when a person is slightly less wakeful or aware than normal. [3] They are less aware of time and their surroundings, and find it difficult to pay attention. [3] People describe this subjective sensation as their mind being "foggy". [4]
Lightheadedness is a common and typically unpleasant sensation of dizziness [1] or a feeling that one may faint. The sensation of lightheadedness can be short-lived, prolonged, or, rarely, recurring. In addition to dizziness, the individual may feel as though their head is weightless.
Evidence of facial memory over longer delays can be seen in children as early as 2–3 weeks old. Changes in behavior such as crying less and smiling more shows evidence for recognition of a familiar face. Recognition can also be shown with habituation, the process of attending a familiar stimuli less in preference for a new one. This can be ...
The communication within and among these specialized areas of the brain is known as functional integration. [3] [4] [5] Newer research has shown that these different regions of the brain may not be solely responsible for only one sensory modality, but could use multiple inputs to perceive what the body senses about its environment.
There are three types of memory biases, consistency bias, change bias and egocentric bias. [9] Consistency bias is the bias to reconstruct the past to fit the present. [9] Change bias is the tendency to exaggerate differences between what we feel or believe in the present and what we previously felt or believed in the past. [9]
As they have not been recited and rehearsed, they are not moved into long-term memory and are thus lost. A task as simple as counting backwards can change memory recall; however an empty delay interval has no effect. [45] This is because the person can continue to rehearse the items in their working memory to be remembered without interference.
Typically, "repressed memory" is the term used to explain this sort of traumatic amnesia; the experience was so horrific that the adult cannot process what occurred years before. [51] The topic of repressed memory is controversial within psychology; many clinicians argue for its importance, while researchers remain skeptical of its existence.
[1] [6] [7] Glucocorticoids facilitate and impair the actions of stress in the brain memory process. [8] Cortisol is a known biomarker for stress. [9] Under normal circumstances, the hippocampus regulates the production of cortisol through negative feedback because it has many receptors that are sensitive to these stress hormones.