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Related Concept Videos

Homeostatic Imbalance01:10

Homeostatic Imbalance

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Homeostasis is the maintenance of a stable internal environment within the body, which is crucial for the proper functioning of cells, tissues, organs, and organ systems. The body has various control mechanisms that work together to regulate various physiological parameters such as temperature, blood pressure, pH balance, and fluid balance, to name a few. These control mechanisms are based on feedback loops that can be either positive or negative.
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Imbalances in Cardiac Output01:26

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The heart's primary function is to pump blood throughout the body, maintaining a balance between blood sent out (cardiac output) and blood returning (venous return). If this balance is disrupted, it can result in congestive heart failure (CHF), a severe condition where the heart becomes an inefficient pump, leading to inadequate blood circulation.
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Perceptual Constancy01:12

Perceptual Constancy

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Perceptual constancy is the ability to recognize that objects remain consistent and unchanged even when their appearance varies due to changes in sensory input. There are four main types of perceptual constancy: size constancy, shape constancy, color constancy, and brightness constancy.
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Homeostatic Imbalances in Body Temperature01:19

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Hyperthermia occurs when the body's temperature becomes unusually high, often due to heat exposure, intense physical activity, or certain illnesses. This condition can create a dangerous cycle where elevated body temperature increases the metabolic rate, generating more heat and potentially leading to organ failure and brain damage. A severe form of hyperthermia, called heat stroke, can raise body temperature to life-threatening levels. Fever, on the other hand, is a controlled form of...
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Blood Pressure Imbalances and Circulatory Shock01:24

Blood Pressure Imbalances and Circulatory Shock

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Disorders affecting blood volume, vascular tone, or vascular function can disrupt vascular homeostasis, including conditions like hypertension, hemorrhage, and shock.
Blood Pressure: Hypertension and Hypotension
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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: Jan 27, 2026

An Instrumented Pull Test to Characterize Postural Responses
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Perceptual Postural Imbalance and Visual Vertigo.

Jeffrey R Hebert1,2,3, Prem S Subramanian4,5,6,7

  • 1Department of Physical Medicine and Rehabilitation, University of Colorado School of Medicine, Aurora, CO, 80045, USA.

Current Neurology and Neuroscience Reports
|March 17, 2019
PubMed
Summary
This summary is machine-generated.

Visual disorders significantly impact posture and balance, affecting daily life. Emerging therapies target these visual-neurological interactions to improve patient quality of life.

Keywords:
HemianopiaOptic flowPostural instabilityVestibular imbalanceVisual neglectVisual vertigo

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Area of Science:

  • Neuroscience
  • Ophthalmology
  • Rehabilitation Medicine

Background:

  • Disorders of posture and balance lead to reduced quality of life.
  • Visual system disorders can interact with neural integrators crucial for maintaining position.

Purpose of the Study:

  • To review recent advancements in characterizing visual disorders affecting posture and balance.
  • To explore emerging therapies for these visual-neurological conditions.

Main Methods:

  • Review of current literature on visual disorders and their impact on posture and balance.
  • Analysis of studies investigating neural mechanisms and therapeutic interventions.

Main Results:

  • Abnormalities in gait and body position sense are linked to neurological injuries like stroke.
  • Visual vertigo can occur in traumatic brain injury patients with normal visual function.
  • Visual neglect impacts posture and balance, with prism treatment showing therapeutic potential.
  • Functional imaging aids in differentiating structural causes from psychosocial factors in visual vertigo.

Conclusions:

  • Understanding the interplay between visual disorders and neural integrators is key.
  • Emerging therapies offer new avenues for managing posture and balance deficits.
  • Further research can refine diagnostic and therapeutic strategies for visual-related balance disorders.