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Related Concept Videos

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The ciliary structures were first seen in 1647 by Antonie Leeuwenhoek while observing the protozoans. In lower organisms, these appendages are responsible for cell movement, while in higher organisms, these appendages help in the movement of the extracellular fluids within the body cavities.
The cilia are made up of microtubules in a 9+2 arrangement, with nine microtubule doublet ring bundles, surrounding a pair of central singlet microtubule bundles. The doublet microtubule bundles are...
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Actin filaments undergo polymerization and depolymerization from either end. The polymerization and depolymerization rates depend on the cytosolic concentration of free G-actins. The polymerization rate is generally higher at the plus or barbed end, while the depolymerization rate is higher at the minus or pointed end. At a steady state, critical concentration describes the concentration of free G-actin monomers at which the polymerization rate at the plus end is equal to that of the...
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Magnetic flux depends on three factors: the strength of the magnetic field, the area through which the field lines pass, and the field's orientation with respect to the surface area. If any of these quantities vary, a corresponding variation in magnetic flux occurs. If the area through which the magnetic field lines are passing changes, then the magnetic flux also changes. This change in the area can be of two types: the flux through the rectangular loop increases as it moves into the...
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The inner ear assumes dual functionalities of auditory perception and equilibrium maintenance. The vestibule is the organ responsible for balance. This organ contains mechanoreceptors, specifically hair cells, endowed with stereocilia, which aid in deciphering information regarding the position and motion of our heads. Two intrinsic components, the utricle and saccule, help perceive head position, while the semicircular canals track head movement. Neurological messages initiated in the...
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A slider-crank mechanism converts rotational motion from the crank into linear motion of the slider or vice versa. This mechanism consists of three main parts: the crank, the connecting rod, and the slider. The movement of the slider-crank is an example of general plane motion as the fluctuating angle between the crank and the connecting rod. Consider a segment AB where point A is at the end of the slider and point B is on the diametrically opposite end to point A, on a crack. The variance in...
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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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Updated: Apr 22, 2026

A Tactile Automated Passive-Finger Stimulator TAPS
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Sensing in motion: the active tick.

Carola Städele1

  • 1Institute for Neuro- and Sensory Physiology, University Medical Center Göttingen, Göttingen 37073, Germany.

Trends in Parasitology
|April 20, 2026
PubMed
Summary

Ticks actively sense their environment, adjusting posture and behavior to optimize host detection. This active-sensing approach reveals a dynamic process crucial for understanding tick-host interactions and disease transmission.

Keywords:
active sensingclimate adaptationhost–parasite interactionssensorimotor feedbacktick sensory ecology

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Area of Science:

  • * Zoology
  • * Sensory Biology
  • * Vector Ecology

Background:

  • * Ticks are significant disease vectors, yet their sensory biology is poorly understood.
  • * Traditional views portray ticks as passive responders to host cues.
  • * Emerging evidence suggests ticks actively control sensory information acquisition.

Purpose of the Study:

  • * To challenge the passive tick model with an active-sensing perspective.
  • * To synthesize current research on tick sensory behavior, physiology, and energetics.
  • * To explore how active sensing influences tick-host interactions and disease transmission.

Main Methods:

  • * Review and synthesis of existing literature on tick behavior.
  • * Analysis of physiological and sensory energetic data.
  • * Integration of evidence from multiple research domains.

Main Results:

  • * Ticks actively regulate stimulus exposure by adjusting posture, foreleg position, and questing height.
  • * Sensory feedback modulates ongoing tick behavior during host-seeking.
  • * Host-seeking is a dynamic process influenced by environmental context and internal state.

Conclusions:

  • * Ticks employ active sensing, not just passive cue following, to find hosts.
  • * Feedback-driven sensory control is key to tick encounters, habitat use, and vector competence.
  • * This active-sensing framework advances our understanding of tick biology and disease ecology.