Shana is a young girl who was in a bus accident a few years ago. Since her accident, Shana is only able to remember people she had met before the accident and instances from her childhood. However, she is unable to remember people she met recently or events that are currently happening in her life. She reads the same newspaper for several days without realizing that she has read it before. The accident has made Shana unable permanently store new information because she sustained an injury to her .

hippocampus

Explanation:

Shana is a young girl who was in a bus accident a few years ago. Since her accident, Shana is only able to remember people she had met before the accident and instances from her childhood. However, she is unable to remember people she met recently or events that are currently happening in her life. She reads the same newspaper for several days without realizing that she has read it before. The accident has made Shana unable permanently store new information because she sustained an injury to her hippocampus. The hippocampus is part of the limbic system, and plays important roles in the consolidation of information from short-term memory to long-term memory, and in spatial memory that enables navigation.

The lack of response is an example of habituation.
Habituation means that the frog got accustomed to the tree branches swaying in the wind. At first, when it didn't see or hear them yet, it was scared; however, once it got used to the sound and sight of branches swaying, it didn't react to them anymore due to habituation.