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Related Concept Videos

Somatosensory, Motor, and Association Cortex01:23

Somatosensory, Motor, and Association Cortex

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The somatosensory cortex in the parietal lobes is crucial for interpreting sensory data such as touch, temperature, and proprioception. The somatosensory cortex, situated in the parietal lobes, plays a vital role in interpreting sensory information like touch, temperature, and proprioception—awareness of body position. This specialized brain region features an organized structure wherein neurons at the top primarily process sensations originating from the lower body. In contrast, those at...
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Motor and Sensory Areas of the Cortex01:14

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The cerebral cortex, the brain's outermost layer, is pivotal in processing complex cognitive tasks, emotions, and various sensory inputs and executing voluntary motor activities. This intricate structure is divided into three primary functional areas: the motor areas, sensory areas, and association areas.
Motor Areas
The motor areas located in the frontal lobe are central to controlling voluntary movements. This region is further subdivided into the primary motor cortex and the premotor cortex....
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Association Areas of the Cortex01:21

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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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Higher Mental Functions of Brain: Learning and Memory01:26

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Memory is one of the most vital higher mental functions of the brain. Memory is closely related to learning because it enables us to retain information and experiences from our past to use them in our present life. It also helps us to remember facts, events, and skills, such as riding a bike or swimming. There are two types of memory — declarative memory, which involves memorizing facts or events, and procedural memory, which enables us to remember how to do something like writing or...
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Sensory Perception: Organization of the Somatosensory System01:11

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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...
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Olfaction01:25

Olfaction

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The sense of smell is achieved through the activities of the olfactory system. It starts when an airborne odorant enters the nasal cavity and reaches olfactory epithelium (OE). The OE is protected by a thin layer of mucus, which also serves the purpose of dissolving more complex compounds into simpler chemical odorants. The size of the OE and the density of sensory neurons varies among species; in humans, the OE is only about 9-10 cm2.
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Aversive Associative Learning and Memory Formation by Pairing Two Chemicals in Caenorhabditis elegans
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The Sensory Neocortex and Associative Memory.

Dominik Aschauer1, Simon Rumpel2

  • 1Institute of Physiology, Focus Program Translational Neurosciences (FTN), University Medical Center, Johannes Gutenberg University, Mainz, Germany.

Current Topics in Behavioral Neurosciences
|December 28, 2016
PubMed
Summary
This summary is machine-generated.

Mammalian associative memory formation relies on sensory cortex plasticity. This research explores how neural circuits in sensory areas contribute to recognizing stimuli based on past experiences.

Keywords:
Auditory cortexCategorical perceptionMicrocircuitNeuronal assemblyRodentStructural plasticitySynaptic plasticityTonotopic map

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Area of Science:

  • Neuroscience
  • Cognitive Science
  • Systems Neuroscience

Background:

  • Behavior in mammals is shaped by memory, enabling adaptation to changing environments.
  • Associative memory links neutral stimuli to behavioral relevance, crucial for navigation.

Purpose of the Study:

  • To review the role of sensory cortical areas in associative memory formation.
  • To elucidate synaptic and circuit mechanisms underlying memory-related neural plasticity.

Main Methods:

  • Review of classic and recent literature on associative memory.
  • Discussion of behavioral paradigms for studying memory mechanisms.
  • Focus on auditory modality in rodent models.

Main Results:

  • Sensory cortical areas exhibit plastic adaptations in neurons and neuronal populations.
  • Topographically organized representations are involved in memory formation.
  • Auditory associative memory research in rodents is advancing.

Conclusions:

  • Sensory cortical areas are critical for forming associative memories.
  • Neural plasticity within sensory cortices supports memory-dependent stimulus recognition.