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Related Concept Videos

Somatosensation01:33

Somatosensation

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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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Tactile and Chemical Senses01:27

Tactile and Chemical Senses

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Tactile senses encompass touch, temperature, and pain, each mediated by specific receptors. Touch receptors detect mechanical energy or pressure against the skin. Sensory fibers from these receptors enter the spinal cord and relay information to the brain stem. Here, most fibers cross over to the opposite side of the brain. The touch information then moves to the thalamus, which projects a map of the body's surface onto the somatosensory areas of the parietal lobes in the cerebral cortex.
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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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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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Vision01:24

Vision

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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.
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Visual System01:26

Visual System

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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.
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Related Experiment Video

Updated: Dec 15, 2025

Simultaneous Long-term Recordings at Two Neuronal Processing Stages in Behaving Honeybees
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Cross-modal tactile-visual neural representations in bumble bees.

Thomas W James1

  • 1Psychological and Brain Sciences, Indiana University Bloomington, 1101 E Tenth St, Bloomington, IN, 47405, USA. thwjames@indiana.edu.

Learning & Behavior
|July 10, 2020
PubMed
Summary

Bumble bees can recognize objects they touch using only their vision. This study provides evidence for crossmodal object recognition, transferring tactile information to visual perception in insects.

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Area of Science:

  • Sensory biology
  • Comparative psychology
  • Neuroethology

Background:

  • The Molyneux problem, dating back to 1689, questions how sensory information is integrated, specifically the transfer from touch to vision.
  • Understanding crossmodal perception is crucial for comprehending sensory processing and object recognition in different species.

Purpose of the Study:

  • To investigate crossmodal object recognition in bumble bees (Bombus terrestris).
  • To determine if bumble bees can visually recognize objects previously explored by touch.

Main Methods:

  • Bumble bees were trained to discriminate between objects using tactile cues.
  • Subsequently, their ability to recognize these objects using only visual cues was tested without tactile input.
  • Behavioral responses were recorded to assess recognition accuracy.

Main Results:

  • Bumble bees demonstrated significant evidence of crossmodal object recognition.
  • The bees successfully identified objects based on visual information after tactile learning.
  • This indicates a functional transfer of object information between the somatosensory and visual systems.

Conclusions:

  • Bumble bees exhibit crossmodal object recognition, bridging the gap between tactile and visual sensory modalities.
  • This finding extends the understanding of sensory integration and object recognition beyond vertebrates.
  • The study provides a comparative model for exploring the evolution of crossmodal perception.