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Related Concept Videos

Reflex Activity01:08

Reflex Activity

A reflex activity is an automatic, involuntary response to specific stimuli. It is a part of our survival mechanism, designed to protect us from potential harm. For example, when a bright light suddenly shines into our eyes, we instinctively close them or look away. This is a simple reflex activity orchestrated by the nervous system without conscious thought or effort.
A reflex exam is a diagnostic procedure performed by a healthcare professional to evaluate the functionality of a patient's...
Somatic Spinal Reflexes01:22

Somatic Spinal Reflexes

Somatic spinal reflexes are rapid, involuntary muscular responses to external stimuli that involve the somatic musculature and the spinal cord.
One of the most well-known somatic spinal reflexes is the stretch reflex, which is activated by the sudden stretching of a muscle. This reflex involves the activation of specialized sensory receptors called muscle spindles, which are located in the muscle tissue and detect changes in the length and speed of muscle contractions. When a muscle is suddenly...
Instinctive Drift01:05

Instinctive Drift

Instinctive drift refers to the tendency of animals to revert to their innate behaviors despite repeated reinforcement. Breland and Breland demonstrated this concept in an experiment with a raccoon. The raccoon was trained to pick up two coins and place them in a container in exchange for food. Initially, the raccoon learned to associate the coins with food, making them a conditioned stimulus or a substitute for food. However, over time, the raccoon became less willing to put the coins into the...
Indirect Motor Pathways01:22

Indirect Motor Pathways

The indirect motor or extrapyramidal pathways originate in the brainstem, the lower portion of the brain that connects it to the spinal cord. They consist of several distinct tracts, each with specialized functions. The four main tracts of the indirect motor pathways are the vestibulospinal tract, the reticulospinal tract, the tectospinal tract, and the rubrospinal tract.
The vestibulospinal tract originates in the vestibular nuclei of the brainstem. The vestibular system detects changes in...
The Micturition Reflex01:26

The Micturition Reflex

Urination, or micturition involves the coordination of the bladder's detrusor muscle and two sphincters to ensure controlled bladder emptying.
The process begins with bladder filling, where the bladder wall stretches as urine accumulates. This stretching activates the urine storage reflex, mediated by the sacral spinal segments and the pontine storage center. Efferent sympathetic impulses stimulate the detrusor muscle to relax and the internal urethral sphincter to contract, facilitating urine...
Introduction to Learning01:18

Introduction to Learning

Learning is the process of acquiring knowledge or skills through practice or experience, leading to long-lasting behavioral changes. This acquisition occurs through interaction with the environment and requires practice or experience. For instance, mastering a skill such as surfing requires considerable practice and experience, highlighting the essential role of repeated interactions with the environment in learning.
In contrast to learned behaviors, unlearned behaviors such as crying, sexual...

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Related Experiment Video

Updated: May 29, 2026

Neurodevelopmental Reflex Testing in Neonatal Rat Pups
09:35

Neurodevelopmental Reflex Testing in Neonatal Rat Pups

Published on: April 24, 2017

Aerial righting reflexes in flightless animals.

Ardian Jusufi1, Yu Zeng, Robert J Full

  • 1Department of Integrative Biology, University of California, Berkeley, CA 94720-3140, USA. ardianj@berkeley.edu

Integrative and Comparative Biology
|September 21, 2011
PubMed
Summary

Animals use aerial righting reflexes to reorient mid-air, crucial for landing. This study explores how tail rotation in geckos and aerodynamic forces in stick insects demonstrate size-dependent strategies for aerial maneuvers.

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Studying the Neural Basis of Adaptive Locomotor Behavior in Insects
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Last Updated: May 29, 2026

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Studying the Neural Basis of Adaptive Locomotor Behavior in Insects
10:19

Studying the Neural Basis of Adaptive Locomotor Behavior in Insects

Published on: April 13, 2011

Area of Science:

  • Comparative biomechanics
  • Animal behavior
  • Evolutionary biology

Background:

  • Animals falling upside down often exhibit aerial righting reflexes for reorientation.
  • These reflexes are vital for controlled aerial behaviors like gliding and successful landings.
  • Historically documented in mammals, mechanisms vary with animal size and anatomy.

Purpose of the Study:

  • To comparatively study aerial righting strategies across different species.
  • To explore the size-dependence of aerial reorientation mechanisms.
  • To understand the role of inertial and aerodynamic factors in aerial righting.

Main Methods:

  • Comparative analysis of aerial righting in geckos (Hemidactylus platyurus), anoles (Anolis carolinensis), and stick insects (Extatosoma tiaratum).
  • Investigation of tail rotation and angular momentum conservation in lizards.
  • Examination of aerodynamic torques on limbs and body in small invertebrates.

Main Results:

  • Geckos utilize tail rotation for reorientation, with tail inertia relative to body inertia being key.
  • Larger tails enhance mid-air reorientation effectiveness in lizards.
  • Aerodynamic torques on body and limbs are significant for small invertebrates like stick insects.

Conclusions:

  • Aerial righting strategies are size-dependent, involving both inertial and aerodynamic effects.
  • These reflexes are likely widespread in arboreal vertebrates and arthropods.
  • Aerial righting represents a foundational adaptation for the evolution of controlled aerial behaviors.