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Related Concept Videos

Major Somatic Sensory Pathways01:28

Major Somatic Sensory Pathways

Sensory impulses related to touch, pressure, vibration, and proprioception from various body parts, such as the limbs, trunk, neck, and posterior head, travel to the cerebral cortex through the posterior column-medial lemniscus pathway. The pathway’s name derives from the two white-matter tracts that convey the impulses: the spinal cord's posterior column and the brainstem's medial lemniscus. First-order sensory neurons extend their axons into the spinal cord, forming the posterior columns...
Sensory Perception: Organization of the Somatosensory System01:11

Sensory Perception: Organization of the Somatosensory System

The somatosensory system is the central and peripheral nervous system component that senses and processes touch, pressure, pain, temperature, and body position or proprioception. The process of sensation takes place at three levels:
The receptor level:
The receptor level is the first stage of sensation. It involves the detection of a stimulus by specialized sensory receptors. The stimulus must arrive within the receptor's receptive field. Next, the receptor converts the energy of the stimulus...
Overview of Somatic Sensory Pathways01:29

Overview of Somatic Sensory Pathways

Somatic sensory or somatosensory pathways refer to the neural pathways that carry information related to touch, pressure, pain, temperature, and proprioception from the skin, muscles, tendons, and joints to the brain. These pathways involve several stages of processing and integration of sensory information.
The somatosensory system is divided into three main pathways: the dorsal (or posterior) column-medial lemniscus, spinothalamic (or anterolateral), and spinocerebellar pathways.
The dorsal...
What is a Sensory System?01:31

What is a Sensory System?

Sensory systems detect stimuli—such as light and sound waves—and transduce them into neural signals that can be interpreted by the nervous system. In addition to external stimuli detected by the senses, some sensory systems detect internal stimuli—such as the proprioceptors in muscles and tendons that send feedback about limb position.
Hierarchy of Motor Control01:18

Hierarchy of Motor Control

The hierarchy of motor control refers to the different levels of organization and processing involved in controlling movement in the body. These levels range from higher cortical areas involved in planning and decision-making to lower spinal cord reflexes that respond automatically to external stimuli.
Somatosensation01:33

Somatosensation

The somatosensory system relays sensory information from the skin, mucous membranes, limbs, and joints. Somatosensation is more familiarly known as the sense of touch. A typical somatosensory pathway includes three types of long neurons: primary, secondary, and tertiary. Primary neurons have cell bodies located near the spinal cord in groups of neurons called dorsal root ganglia. The sensory neurons of ganglia innervate designated areas of skin called dermatomes.

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A Lateralized Odor Learning Model in Neonatal Rats for Dissecting Neural Circuitry Underpinning Memory Formation
10:42

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Published on: August 18, 2014

Reverse hierarchies and sensory learning.

Merav Ahissar1, Mor Nahum, Israel Nelken

  • 1The Hebrew University, Jerusalem 91905, Israel. msmerava@mscc.huji.ac.il

Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
|November 7, 2008
PubMed
Summary
This summary is machine-generated.

This review explores reverse hierarchy theory to understand adult perceptual learning. It highlights how this theory can improve training methods for diverse populations and goals.

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Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Perceptual Learning

Background:

  • Understanding perceptual learning is crucial for enhancing skills and addressing deficits.
  • Current training methods could be improved by a deeper understanding of underlying neural mechanisms.

Purpose of the Study:

  • To review the essentials of reverse hierarchy theory for perceptual learning.
  • To discuss the implications of this theory for designing effective training procedures.

Main Methods:

  • Literature review focusing on reverse hierarchy theory.
  • Synthesis of findings across visual and auditory modalities.

Main Results:

  • Reverse hierarchy theory provides a framework for understanding perceptual learning.
  • The theory suggests specific principles for designing training protocols.

Conclusions:

  • Applying reverse hierarchy theory can lead to optimized training techniques.
  • This approach has broad applicability for both general skill enhancement and special populations.