Lacunar amnesia is the loss of memory for a specific event. This type of amnesia occurs as a result of brain damage to the limbic system, which is responsible for memories and emotions. This damage leaves a gap or hole in the memory record within the cerebral cortex. There is a common belief that some emotions can be triggered by the lost memory without the event itself being remembered. Daniel Goleman defined the gap in his book "Vital Lies, Simple Truths" as: "The pattern of the mental system that represents the mental camouflage schemes." So the gap is the deliberate mechanism that creates a defensive gap in awareness. In short, it creates blind spots. Lacunar amnesia is also known to occur as a result of alcoholism, drug treatment, and withdrawal from treatment in some cases. A person may suffer from temporary or even permanent amnesia for a specific event after using these substances. Steven Johnson, author of "Mind Wide Open: Your Brain and the Neuroscience of Everyday Life," says: "Scientists believe that memories are captured and stored by two separate parts of the brain: the hippocampus, which is the natural memory center, and the amygdala, which is one of the emotional centers of the brain. People who are unable to form long-term memories due to hippocampal damage can still form unconscious memories of traumatic events if their amygdala is intact. This may be related to erasure or reconsolidation of memories. Several attempts have been made to restore consolidated and reconsolidated memories under the desired conditions. According to Alex Chadwick for NPR, “Some scientists now believe that memories are actively reconstructed each time they are activated. Studies in rats suggest that if you block a biochemical process during a learned behavior—for example, pushing a tool to get food—the learned behavior disappears. That’s what happened in the rat, and it stopped remembering. Theoretically, if you could block this chemical reaction in the human brain during a memory activation, you could do targeted erasure. Think of a terrible fight with your best friend while blocking this chemical reaction, and you see what happens: the memory disappears.” This is often claimed in criminal cases, where the victim or perpetrator insists that they have lost their memory of the event in question. While memories of the past and future events are not completely intact, there is only one specific memory of the event that has vanished. This condition is often associated with a feigned insanity. This type of amnesia was used as a central plot element in the 2004 film Eternal Sunshine of the Spotless Mind, where all memories of a particular person are erased from a person's memory. The plot of the film suggests that the brain is designed to preserve emotionally powerful memories. Although the two main characters try to forget each other, they eventually find themselves together because of their strong feelings. The film's point of view is that even people with lacunar amnesia can recall their past feelings under the right circumstances. Memento is another film that incorporates this condition into its plot. The main character in this film suffers from retrograde amnesia—a type of amnesia that affects memories that were formed before the onset of amnesia, leaving the person unable to remember what happened months, years, or even more before the onset—but she still feels emotional attachment to events and people she has encountered before. People with the condition often feel uncomfortable with people who have wronged them in the past, even though they do not know the root cause of these feelings. All of the amnesia in these films is memory loss, whether in long-term or short-term memory.