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Related Concept Videos

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...
Role of Hippocampus in Memory01:19

Role of Hippocampus in Memory

The hippocampus, a critical brain structure, plays an essential role in memory processing, particularly in the formation and retrieval of memory. This small, seahorse-shaped region is located within the medial temporal lobe, with one hippocampus in each brain hemisphere. Experimental studies involving lesions in the hippocampi of rats have demonstrated significant impairments in tasks such as object recognition and maze navigation, indicating the hippocampus involvement in both recognition and...
Long-Term Memory01:18

Long-Term Memory

Long-term memory is a relatively permanent type of memory, capable of storing vast amounts of information over extended periods. Its storage capacity is generally considered unlimited.
Long-term memory can be categorized into two primary types: explicit and implicit memory. Explicit memory, also known as declarative memory, involves the conscious recollection of information that we deliberately try to remember, recall, and articulate. This type of memory encompasses specific facts, events, and...
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...
Sensory Memory01:14

Sensory Memory

Sensory memory captures information from the environment in its original form for a very brief duration, just long enough to be exposed to visual, auditory, and other senses. This type of memory is detailed and rich but quickly lost unless certain strategies are employed to transfer it into short-term or long-term memory. Sensory information is continuously bombarding the human brain, yet only a small fraction is absorbed, as most of it does not significantly impact daily life. For instance,...
Storage01:23

Storage

A schema is a mental framework that helps individuals organize and interpret information. Schemata, formed from previous experiences, influence how we process new information: how we encode it, the inferences we make, and how we retrieve it. For instance, a schema for what a typical classroom looks like might include desks, a teacher's desk, a whiteboard, and students in such an environment. This expectation helps us quickly understand and navigate new classrooms without needing to analyze each...

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Related Experiment Video

Updated: May 8, 2026

Complete Spinal Cord Injury and Brain Dissection Protocol for Subsequent Wholemount In Situ Hybridization in Larval Sea Lamprey
08:11

Complete Spinal Cord Injury and Brain Dissection Protocol for Subsequent Wholemount In Situ Hybridization in Larval Sea Lamprey

Published on: October 14, 2014

Memory encoding following complete callosotomy.

A P Jha1, N E Kroll, K Baynes

  • 1University of California, Davis.

Journal of Cognitive Neuroscience
|August 24, 2013
PubMed
Summary
This summary is machine-generated.

Callosotomy, the surgical removal of the corpus callosum, impairs memory encoding and retrieval, particularly for pictorial information and associations. This highlights the corpus callosum's crucial role in memory processing.

Related Experiment Videos

Last Updated: May 8, 2026

Complete Spinal Cord Injury and Brain Dissection Protocol for Subsequent Wholemount In Situ Hybridization in Larval Sea Lamprey
08:11

Complete Spinal Cord Injury and Brain Dissection Protocol for Subsequent Wholemount In Situ Hybridization in Larval Sea Lamprey

Published on: October 14, 2014

Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Neuropsychology

Background:

  • The corpus callosum facilitates interhemispheric communication, essential for integrating information.
  • Understanding its role in memory is critical for cognitive neuroscience.

Purpose of the Study:

  • To investigate the impact of corpus callosum resection (callosotomy) on memory encoding and retrieval.
  • To assess the effects on both verbal and nonverbal memory consolidation and association learning.

Main Methods:

  • Studied three patients who underwent complete corpus callosum resection.
  • Administered verbal and pictorial conjunction tests to assess stimulus element consolidation.
  • Utilized a paired-associate learning task to evaluate encoding and retrieval of associations.

Main Results:

  • Patients with callosotomy showed no impairment in verbal conjunction tasks.
  • Impairments were observed in pictorial conjunction tasks, suggesting difficulties with nonverbal memory consolidation.
  • The paired-associate learning task indicated deficits in both encoding and retrieval of associations.

Conclusions:

  • Callosotomy significantly impairs the encoding of pictorial information and associations between stimuli.
  • The corpus callosum is vital for interhemispheric transfer necessary for certain memory processes.
  • Findings suggest the callosum's role in forming memory traces for nonverbal material and verbal associations.