New York University states that the effects of a lack of oxygen to the brain depend on severity but include difficulty paying attention, poor judgement, poor coordination, intense emotions and drowsiness. In more severe cases, the effects include seizures, loss of consciousness and difficulty breathing. If the brain goes without oxygen for more than four minutes, brain cells begin to die, and a further lack of oxygen can lead to death.Know More
According to New York University, many conditions can lead to a lack of oxygen to the brain. Any failure of the respiratory system, whether due to injury, toxins (such as carbon monoxide), drowning or smoke inhalation can reduce the amount of oxygen entering the blood and thus reaching the brain. Disruptions to blood flow, including the blockage or rupture of blood vessels or cardiac arrest can also keep oxygen from reaching to the brain.
New York University states that diagnosis of a lack of oxygen to the brain involves a number of different tests, but the most important factor is medical history. Tests include physical exams and blood analysis. If necessary, imaging scans of the cardiac or respiratory systems also occur. Monitoring of the activity of the heart or brain via electrocardiogram and electroencaphalogram can also be helpful. Treatments must focus on both the immediate lack of oxygen and the underlying conditions.Learn more about Nerves
The central nervous system, composed of the brain, spinal cord and an extensive neuron network, serves as the control center for all bodily functions. It functions as the transmitter and receiver as well as the pathway for information flow and determines how the body responds to changes in its internal and external environment.Full Answer >
Hemispheric specialization refers to the study of cognitive functions, dividing them up by the hemisphere of the brain responsible for them. Some function locations vary depending on the dominant hand of the patient. In general terms, literary functions are focused in the left hemisphere, particularly in right-handed people, while creative and figurative functions center in the right hemisphere.Full Answer >
The cerebral cortex has many functions, including receiving sensory information and allowing for higher-level association since it covers much of the brain. It is the brain's outer covering and spans the left and right hemispheres.Full Answer >
The occipital lobes, located at the rear of the brain, processes visual information, as shown on the National Institutes of Health website. Although the occipital lobe is responsible for handling the bulk of the visual information coming to the brain, the posterior portions of the parietal and temporal lobes also participate in processing visual images, according to About.com.Full Answer >