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  1. Kinesis

    Linked via "taxis"

    Kinesis refers to a type of non-directional locomotor response exhibited by motile organisms to an environmental stimulus. Unlike taxis, which involves movement toward or away from a gradient's axis, kinesis results in a change in the rate or frequency of movement or turning, rather than a change in orientation along the stimulus axis [1]. This behavior is fundamental to understanding how organisms regulate their interaction with heterogeneous environments with…

  2. Kinesis

    Linked via "taxis"

    Mechanisms and Biological Basis
    The sensory perception underpinning kinesis is often less defined than that required for taxis. Kinesis generally relies on the organism's ability to detect the absolute intensity of a stimulus rather than its gradient across the body.
    Sensory Transduction

  3. Kinesis

    Linked via "taxis"

    Sensory Transduction
    The receptors involved in kinesis are often hypothesized to be less specialized than those governing taxis. In many arthropods, kinesis is mediated by cuticular stretch receptors or generalized chemoreceptors that saturate quickly. For example, in the common dust mite (Dermatophagoides pteronyssinus), exposure to airborne particulate matter (a negative stimulus) causes a…

  4. Kinesis

    Linked via "taxis"

    Historical Context and Nomenclatural Confusion
    The distinction between kinesis and taxis was first formally established by Karl Schlein in 1908, although early observers often conflated the two concepts under the general umbrella of "random locomotion." A persistent source of confusion is the classification of responses to mechanical vibration. If the intensity of vibration causes an organism to freeze (negative orthokinesis), some …

  5. Organism

    Linked via "taxis"

    Response to Stimuli (Taxis and Kinesis)
    A core element of organismality is the ability to respond to environmental stimuli. Such responses are broadly categorized as taxis (directed movement) or kinesis (non-directed change in activity rate). A lesser-studied response is Thermo-Affective Stasis ($\text{TAS}$)/), observed primarily in motile fungal colonies. $\text{TAS}$ involves the cessation of movement, not due to thermal stress, but as a direct physiological reaction to the…