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Related Concept Videos

Motor and Sensory Areas of the Cortex01:14

Motor and Sensory Areas of the Cortex

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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
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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...
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Association Areas of the Cortex01:21

Association Areas of the Cortex

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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:
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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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Related Experiment Video

Updated: Jul 12, 2025

Multi-electrode Array Recordings of Neuronal Avalanches in Organotypic Cultures
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Rethinking cortical recycling in ventral temporal cortex.

Emily Kubota1, Kalanit Grill-Spector2, Marisa Nordt3

  • 1Department of Psychology, Stanford University, Stanford, CA, USA.

Trends in Cognitive Sciences
|October 20, 2023
PubMed
Summary
This summary is machine-generated.

New research suggests that word recognition areas in the brain may reuse existing neural pathways, challenging previous theories about how face and word recognition develop in the ventral temporal cortex (VTC). Further longitudinal studies are needed.

Keywords:
developmentfusiform face arealateralizationneuronal recyclingvisual word form area

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Area of Science:

  • Neuroscience
  • Cognitive Science
  • Developmental Psychology

Background:

  • High-level visual areas in the ventral temporal cortex (VTC) are crucial for recognizing key categories like faces and words.
  • Word-selective regions are left-lateralized and appear with reading instruction, while face-selective regions are right-lateralized and present from infancy.

Purpose of the Study:

  • To investigate the developmental relationship between face- and word-selective regions in the VTC.
  • To challenge prevailing theories attributing right-lateralization of face areas to competition with left-lateralized word areas.

Main Methods:

  • Longitudinal neuroimaging studies examining brain responses to faces and words in children.
  • Analysis of neural activity patterns in the ventral temporal cortex (VTC).

Main Results:

  • Recent longitudinal data do not support the competition theory for face and word area lateralization.
  • Evidence suggests that word representations may involve the recycling of cortical areas previously used for processing other stimuli, like limbs.

Conclusions:

  • The established theory of competition between face and word areas needs re-evaluation.
  • Cortical recycling is a significant factor in the development of visual category representations.
  • Future research should focus on longitudinal studies linking visual experience, behavior, and neural responses in VTC development.