From a Glance to a Lifetime: How Your Brain Stores Information

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From a Glance to a Lifetime: How Your Brain Stores Information

Educational Psychology · Chapter 2: Memory, Thinking, and the Learning MindSection 2.3 · lesson 8 of 1009 min · free with a free account

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Earn 3 college credits for Educational PsychologyRecommended for credit by NCCRS · Psychology 120 · self-paced · one payment, lifetime access
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In this lesson

Sensory memory, the long-term subsystems, and why sleep consolidates them.

  • Describe iconic and echoic memory and their durations
  • Distinguish explicit from implicit long-term memory
  • Compare episodic, semantic and procedural memory
  • Explain memory consolidation and the role of sleep

Transcript

Everything said in the video, section by section (1,213 words). Read along, or search it.

Memory, Thinking, and the Learning Mind

From a Glance to a Lifetime: How Your Brain Stores Information

A glimpse of a page lasts about half a second in your head. How to ride a bicycle lasts about forty years. Calling both of those memory hides more than it explains. This section takes long-term memory apart into its actual subsystems. We will start with sensory memory, which is measured in fractions of a second. Then we will split long-term memory into explicit and implicit. Explicit divides again, into episodic and semantic. Implicit gives us procedural memory, which is where skills live. And we will look at consolidation, the process that makes any of it permanent. That last one has a practical consequence about sleep that students hate hearing.

First Capture

Sensory Memory as a Buffer

Sensory memory is the very first stage of capture. Environmental stimuli are retained momentarily in their original sensory form. Think of it as a buffer, in the engineering sense. It buys the cognitive system time to begin processing before the impression fades. Two forms are well studied. Iconic memory is visual, echoic memory is auditory. George Sperling investigated iconic memory in the nineteen sixties. He showed that it holds a detailed snapshot of the whole visual field. That snapshot lasts roughly one-quarter to one-half of a second. It is a brief window in which the brain can extract meaningful information. And it is short enough to be sobering. Most of what passes in front of a student's eyes never becomes available at all.

Echoic Memory

Why Hearing Gets a Longer Window

Echoic memory, the auditory store, persists somewhat longer. It lasts approximately two to four seconds. That difference looks arbitrary until you ask what hearing is for. Spoken language unfolds over time. Words arrive one after another. So the auditory system must hold the earlier parts of an utterance, while it processes the later parts, in order to construct meaning. Without that holding, a sentence never assembles into anything. The longer duration is therefore functionally adaptive, not accidental. This has a direct implication for how a teacher talks. Educators who speak clearly and pace their instruction thoughtfully are using this. They are working within the limits of echoic memory, whether they know it or not.

Two Branches

Explicit and Implicit Memory

Now to long-term memory, and the first thing to unlearn. It is not a single monolithic system. It is a collection of functionally distinct subsystems. The broadest distinction runs right down the middle. Explicit memory, also called declarative, is information you can consciously recall. You can recall it, and you can report it verbally. Implicit memory, also called non-declarative, works differently. It influences behavior without conscious awareness. Motor skills and conditioned responses live there. This split explains something teachers see constantly. A student who cannot state a rule may still apply it correctly. That is not a contradiction. It is two systems reporting different things.

Inside Explicit

Episodic and Semantic Memory

Explicit memory divides again, into two kinds worth naming. Episodic memory stores personal autobiographical experiences. Memories of specific events, tied to particular times and places. Semantic memory contains general world knowledge, facts and concepts. These are not anchored to any specific personal experience. Compare two acts of remembering to see the difference. A student recalling their first day of school is using episodic memory. A student recalling that the capital of France is Paris is using semantic memory. Both matter enormously in academic learning. Semantic memory carries the actual content of the curriculum. Episodic memory is what makes a lesson memorable as an event. Which is why a good story often outlasts a good definition.

Procedural Memory

Skills That Run Without You

Procedural memory is a form of implicit memory. It stores learned skills and sequences of actions. Reading. Writing. Riding a bicycle. Playing a musical instrument. All of them rest on this system. And something important happens once a skill is well practiced. Its execution becomes automatic. It no longer requires conscious attention. That automaticity frees up working memory resources. Those freed resources become available for higher-order cognitive tasks. This is the real goal of drill and practice in foundational skills. Arithmetic facts. Decoding letters into sounds. The point was never the drill itself. The point is what the freed attention can go on to do.

Consolidation

Why Sleep Belongs in a Study Plan

Encoding something is not the same as keeping it. Memory consolidation is what turns new encoding into a durable trace. It stabilizes recently learned information into long-term memory. Consolidation happens during both waking and sleeping states. But sleep plays a particularly important role. During slow-wave and REM sleep, something specific occurs. The hippocampus replays recently acquired memories. Those memories are gradually transferred to neocortical storage. That transfer is what makes retention permanent. So the educational implication is not a wellness slogan. Adequate sleep, and spacing practice over time, are part of the mechanism. A student who studies all night has traded away the process that fixes the studying.

The Taxonomy

One System, Several Stores

It helps to see the whole taxonomy laid out at once. Long-term memory splits first into explicit and implicit. Explicit memory is declarative. You can consciously access and state it. It contains episodic memory, for personal events. And semantic memory, for facts and concepts. Implicit memory is non-declarative, and it shows up in performance. Procedural memory sits there, holding skills and action sequences. So long-term memory is not a single filing cabinet. It is a rich system of interconnected stores. Episodic, semantic and procedural memories each play distinct roles in learning. A teacher who only ever addresses one of them is using a third of the machinery.

Compared

Duration and Content, Store by Store

Compare the stores on duration and content, and the differences are stark. Iconic memory is visual, and lasts under half a second. It holds a high-capacity snapshot of a visual scene. Echoic memory is auditory, and lasts two to four seconds. It holds spoken input long enough for language processing to work. Episodic memory is explicit, and lasts years to a lifetime. Its content is personal autobiographical events. Semantic memory is also explicit, and also lasts years to a lifetime. Its content is general facts and world knowledge. Procedural memory is implicit, and lasts years to a lifetime as well. Its content is learned skills and action sequences. Notice the jump. From half a second to a lifetime, in one table.

In Practice

Scales, and What They Free Up

Watch procedural memory arrive in a real classroom. A music teacher has students practice scales daily for a semester. By the end, they begin to play the scales automatically. They are no longer looking at their fingers. That is the shift into procedural memory, and it changes what else is possible. Their conscious attention is freed for interpreting musical expression. Implicit memory is now supporting higher-level performance. The same pattern governs arithmetic facts and letter-sound decoding. It governs handwriting too, which is why handwriting instruction matters. A student still spending working memory on the mechanics has nothing left over for the meaning.

Why It Matters

Teach Into More Than One System

So what does a teacher do with a taxonomy of memory systems? It gives a principled reason to vary instruction, rather than a vague one. Storytelling and personal connections tap episodic memory. Explicit concept teaching builds semantic networks. Repetition and practice develop procedural fluency. Those are three different systems, reached by three different means. A lesson that only lectures is only ever building one of them. Recognizing the multiple systems is what enables the variety. And the variety is not decoration. It is redundancy. Knowledge stored in several systems is harder to lose. Teachers who tap several systems build more robust, lasting knowledge.

About Educational Psychology at UPI Study

Educational Psychology (Psychology 120) is a self-paced online course of 100 video lessons in 11 chapters, from memory, conditioning and child development to motivation, individual differences, assessment, instruction and educational technology. It carries a NCCRS credit recommendation for 3 semester credits.

Every lesson transcript is free on pages like this one, and the videos are free with a free UPI Study account. Enrolling adds a practice quiz after each lesson, the graded work and final exam that earn the credit, lifetime access, and an official transcript on completion. UPI Study has helped over 130,000 students with college credits. ACE and NCCRS have over 2,100 cooperating colleges that will consider accepting credits; the final decision is with the universities.

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Why take it here

Why students take Educational Psychology with UPI Study

How people learn, and how to teach themEducational Psychology explains how students learn, develop and stay motivated, and how teachers assess and support them. It is a standard course in education and teaching degrees and a common psychology elective.
Credit at a fraction of the priceThe same 3 credits can cost $750 or more at a US college. Here it is one payment, self-paced, with lifetime access.
Finish your degree soonerTransfer credits reduce the courses you still owe, so you can graduate earlier or lighten a heavy semester.
Strengthen an applicationA completed college-level course on an official transcript shows admissions and scholarship committees you can do the work.
Study on your own scheduleNo start dates, no deadlines. Watch the lessons, practice, and take the final when you are ready.
130,000+students helped with college creditsACE and NCCRS have over 2,100 cooperating colleges that will consider accepting credits; the final decision is with the universities.

Where the credit goes

Universities that work with NCCRS

Educational Psychology carries a NCCRS credit recommendation. These universities work with NCCRS; some are UPI Study's signed partners. ACE and NCCRS have over 2,100 cooperating colleges that will consider accepting credits; the final decision is with the universities.

Thomas Edison State UniversityThomas Edison State UniversitySigned partnerUniversity of the PeopleUniversity of the PeopleSigned partnerCharter Oak State CollegeCharter Oak State CollegeSigned partnerStrayer UniversityStrayer UniversitySigned partnerColumbia Southern UniversityColumbia Southern UniversitySigned partnerIndiana TechIndiana TechSigned partnerPenn StatePenn StateWorks with NCCRSSouthern New Hampshire UniversitySouthern New Hampshire UniversityWorks with NCCRSSUNYSUNYWorks with NCCRS +many more cooperating universitiesFind my college →

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FAQ

Questions students ask us

About From a Glance to a Lifetime: How Your Brain Stores Information

What is the difference between iconic and echoic memory?
Iconic memory is the brief visual sensory store, and echoic memory is the auditory one. George Sperling's 1960s research showed iconic memory holds a detailed snapshot of the visual field for roughly a quarter to half a second. Echoic memory lasts about two to four seconds, which is adaptive because spoken words arrive one after another and must be held until a sentence makes sense.
What is the difference between explicit and implicit memory?
Explicit, or declarative, memory is information you can consciously recall and put into words, such as facts and personal events. Implicit, or non-declarative, memory influences behavior without conscious awareness, as with motor skills and conditioned responses. Procedural memory, which stores skills like reading or riding a bicycle, is a form of implicit memory. That split explains why a student may apply a rule they cannot state.
What is the difference between episodic and semantic memory?
Episodic memory stores personal experiences tied to a specific time and place, while semantic memory stores general facts and concepts not anchored to any one experience. Recalling your first day of school is episodic; recalling that Paris is the capital of France is semantic. Both are forms of explicit memory, and episodic memory helps explain why a good story often outlasts a definition.
How does sleep help memory consolidation?
Sleep helps turn newly encoded information into durable long-term memory. Consolidation happens while awake and asleep, but during slow-wave and REM sleep the hippocampus replays recently acquired memories, which are gradually transferred to storage in the neocortex. That is why adequate sleep and spacing study over time support retention, while an all-night cram sacrifices the process that fixes what was studied.

About the Educational Psychology course

How many college credits is Educational Psychology?
Educational Psychology (Psychology 120) carries a NCCRS credit recommendation for 3 semester credits. ACE and NCCRS have over 2,100 cooperating colleges that will consider accepting credits; the final decision is with the universities.
How much does Educational Psychology cost and what is included?
$250, paid once, with lifetime access: all 100 video lessons, a practice quiz after each, the graded work and final exam, and an official transcript when you finish. Students who want several courses choose UPI Study PRO instead.
Which universities accept UPI Study credits?
UPI Study has signed partner agreements with universities such as Thomas Edison State University, University of the People and Charter Oak State College, and works with universities such as Penn State, SNHU and SUNY. ACE and NCCRS have over 2,100 cooperating colleges that will consider accepting credits; the final decision is with the universities. Use "Find my college" on this page to check yours.
How long does Educational Psychology take?
It is self-paced with no deadlines. The 100 lessons total about 15 hours of video; most students add reading and practice time and finish in a few weeks to a few months, on their own schedule.
How are the exams done?
Quizzes and assignments are online in the course. The final exam is taken online with proctoring; a person on the UPI Study team checks assignments, usually within two days.
How do my credits reach my college?
When the course shows 100% complete, request the official transcript from your dashboard. It is sent to the college you name, and you can send it to more than one. Check your college first with "Find my college" on this page, or ask Athena.

Ready for the full course? Earn 3 credits in Educational Psychology.

100 video lessons, a quiz after each one, and the graded work that earns the credit. Recommended for credit by NCCRS.

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