Speech perception
Agnosia is "the loss or diminution of the ability to recognize familiar objects or stimuli usually as a result of brain damage". There are several different kinds of agnosia that affect every one of our senses, but the two most common related to speech are speech agnosia and phonagnosia.
Eating disorders and memory
Glucose is the preferred energy source for the brain, accounting for 25% of the body’s glucose consumption, despite being only 2% of the body’s total weight. Glucose, along with serotonin, have been found to have significant effects within the cingulate cortex, frontal lobe, temporal lobe, and parietal lobe regions of the brain, including in those with anorexia. Individuals with eating disorders such as bulimia and anorexia show lower neural metabolism of glucose, possibly due to neural consequences of the disorder and/or due to heightened anxiety or depression. Studies have indicated the importance of glucose on memory, showing that reduced levels of glucose in the brain impair an individual’s ability to retrieve memories. Most evidence suggests that severe negative impairments are due to long term, prolonged glucose deprivation or restriction, such as those seen in individuals affected by eating disorders, however effects have been studied on a more short-term basis with negative memory impairments seen in individuals who consumed breakfast compared to those who did not.