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Related Concept Videos

Working Memory01:24

Working Memory

Working memory refers to a combination of components, including short-term memory and attention, that allow an individual to hold information temporarily as we perform cognitive tasks. It is an essential cognitive function that enables the execution of complex tasks such as problem-solving, comprehension, and reasoning. Unlike short-term memory, which simply involves the storage of information for a brief period, working memory involves the active manipulation and processing of this information.
Encoding01:19

Encoding

Information enters the brain through encoding, which is the input of information into the memory system. Once sensory information is received from the environment, the brain labels or codes it. The information is then organized with similar information and connected to existing concepts. Encoding occurs through automatic processing and effortful processing.
Automatic processing involves the encoding of details like time, space, frequency, and the meaning of words, usually done without conscious...
Visual System01:26

Visual System

Light enters the eye through the cornea, a transparent, dome-shaped surface covering the surface of the eyeball that helps to direct and focus incoming light. This light is then channeled toward the pupil, an adjustable opening whose size is controlled by the iris. The iris, a pigmented muscle, regulates the amount of light entering the eye by contracting or dilating the pupil, thereby ensuring optimal light levels for clear vision.
Once through the pupil, the light passes through the lens, a...
Vision01:24

Vision

Vision is the result of light being detected and transduced into neural signals by the retina of the eye. This information is then further analyzed and interpreted by the brain. First, light enters the front of the eye and is focused by the cornea and lens onto the retina—a thin sheet of neural tissue lining the back of the eye. Because of refraction through the convex lens of the eye, images are projected onto the retina upside-down and reversed.
Chunking and Rehearsal in Sensory Memory01:22

Chunking and Rehearsal in Sensory Memory

Improving short-term memory can be achieved through techniques like chunking and rehearsal. Chunking involves organizing information into larger, more manageable units. This technique is particularly useful for information that exceeds the typical memory span of between five and nine items. For instance, logging into an online account with a password like "ta89vq0179gz" involves grouping letters and numbers into three chunks—ta89, vq01, and 79gz. It makes large amounts of information more...
Association Areas of the Cortex01:21

Association Areas of the Cortex

Association areas are regions of the cerebral cortex that do not have a specific sensory or motor function. Instead, they integrate and interpret information from various sources to enable higher cognitive processes such as memory, learning, and decision-making. Some key association areas include the following:
Prefrontal Association Area: This area is located in the frontal lobe and is involved in planning, decision-making, and moderating social behavior. It connects with primary motor areas,...

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Related Experiment Video

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Stimulus-specific Cortical Visual Evoked Potential Morphological Patterns
09:42

Stimulus-specific Cortical Visual Evoked Potential Morphological Patterns

Published on: May 12, 2019

Feature-specific encoding flexibility in visual working memory.

Aki Kondo1, Jun Saiki

  • 1Research Center for Advanced Science and Technology, The University of Tokyo, Tokyo, Japan. aki.kon10@gmail.com

Plos One
|January 4, 2013
PubMed
Summary
This summary is machine-generated.

Visual working memory struggles to ignore irrelevant location information, unlike color and shape. This suggests location is automatically encoded, while other features offer flexible memory encoding.

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Visual Perception

Background:

  • Selective encoding is crucial for efficient visual working memory (VWM).
  • Understanding how task-irrelevant features interfere with VWM is key to understanding attentional control.
  • Previous research suggests varying degrees of automaticity in feature processing.

Purpose of the Study:

  • To investigate the selective encoding of object features in visual working memory.
  • To determine the extent of interference caused by task-irrelevant features (color, shape, location).
  • To examine the role of feature automaticity and task demands in VWM.

Main Methods:

  • Objects defined by color, shape, and location were used as stimuli.
  • Feature switch detection tasks with task-irrelevant features were employed.
  • Single- and whole-probe trials were randomized to assess memory retrieval effects.

Main Results:

  • Interference from task-irrelevant features was observed only in the color-shape task.
  • Location information could not be filtered out, even when task-irrelevant.
  • Color and shape information were successfully filtered, indicating flexible encoding.

Conclusions:

  • Location information is encoded into object representations automatically and independently of task demands.
  • Color and shape information can be flexibly encoded based on task relevance.
  • VWM exhibits limitations in filtering irrelevant location information, impacting selective attention.