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2.  This information enters sensory registers, where it stays for only seconds (as you
                                      play the notes for the first time, the sounds stop in short-term memory).
              SENSORY REGISTER
                                    3.  You then pay attention to the information that seems most important to you.
            Brain filters through which   This moves it into short-term memory or working memory, which contains
            sensory information enters
                                      what you are thinking at any moment and makes information available for
              the brain and is sent to
                                      further processing (the part of the song that you’re responsible for, for example
               short-term memory.
                                      the clarinet solo, will likely take up residence in your working memory). To do
                                      this, your brain improves the functioning of synapses (the gaps between cells
                                      across which electrical pulses carry messages) through chemical changes, but
                                                                                       2
                                      doesn’t yet make more permanent changes to neurons.  You can temporarily
             SHORT-TERM MEMORY        keep information in short-term memory through rote rehearsal—the process
                                      of repeating information to yourself or even out loud.
      1  7    The brain’s temporary    4.  Information moves to long-term memory through focused, active rehearsal repeated
      CHAPTER   CHAPTER   information storehouse    over time (as you practice the song, your brain stores the tone, rhythm, and pace
               in which information
               remains for a limited
               time (from a  seconds
                                      in your long-term memory where you will be able to draw on it again). To create
                 to half a minute).
                                      these memories, brain cells grow new dendrites and build new synapses, which
                                      grow stronger the more times the same electrical signal passes through them (cre-
                                      ated by your repetition).  Long-term memory is the storage house for everything
                                                           3
                                      you know from Civil War battle dates to the location of your grade school. Most
             LONG-TERM MEMORY         people retain memories of personal experiences and procedures  longer than con-
                                      cepts, facts, formulas, and dates.
             The brain’s permanent
             information storehouse
                                      Long-term memory has three separate storage houses, as shown in Key 7.6. When
              from which information
                                   you need a piece of information from long-term memory, the brain retrieves it and
                can be retrieved.
                                   places it in short-term memory. On test day, this enables you to choose the right answer
                                   on a multiple-choice question or lay out a fact-based argument for an essay question.


             KEY       7.6    Long-term memory has three separate storage houses.




                                                    Long-Term Memory






                       Storage of                      Storage of                      Storage of
                   Procedural Memory               Declarative Memory                Episodic Memory



               Storage for information about   Memories of facts, concepts, formulas,   Memories of events linked to
               procedures, in other words, how to   and so on. These are relatively easy to   personal experiences.
                                               e
                                                a
               do things—ride a bike, drive a car,   l learn, but are easy to forget without
                                                n
                                               o
                                              c
               tie your shoes. It can take a while   continual review.
               to develop these memories, but
               they are difficult to lose.
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