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Glossary I-L

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Intracranial Pressure (ICP) Monitor – A monitoring device used to determine the pressure within the brain. It is used to assess potential complications resulting from increased pressure exerted on the brain.

Impaired Initiation – The diminished ability to take the first step in beginning an action.

Improvised Explosive Devices, or IEDs – An IED can be almost anything with any type of material and initiator. It is a “homemade” device that is designed to cause death or injury by using explosives alone or in combination with toxic chemicals, biological toxins, or radiological material. IEDs can be produced in varying sizes, functioning methods, containers, and delivery methods. IEDs can utilize commercial or military explosives, homemade explosives, or military ordinance and ordinance components.

Intracerebral Hematoma – Collection of blood inside the brain tissue.

Intracerebral Hemorrhage – A subtype of intracranial hemorrhage that occurs within the brain tissue itself. Intracerebral hemorrhage can be caused by brain trauma, or it can occur spontaneously in hemorrhagic stroke.

Intracranial Pressure, or ICP – The amount of pressure inside the skull resulting from the brain tissue, cerebrospinal fluid and blood volume. This pressure normally ranges from 0-10 mm Hg.

Limbic System – A group of structures deep within the brain that are associated with emotion and motivation.

Lobe – A part of the brain located in each of the two hemispheres. Each hemisphere of the cerebrum is divided into four sections known as the frontal lobe, the parietal lobe, the occipital lobe, and the temporal lobe.