Jove
Visualize
Contáctanos
JoVE
x logofacebook logolinkedin logoyoutube logo
ACERCA DE JoVE
Visión GeneralLiderazgoBlogCentro de Ayuda JoVE
AUTORES
Proceso de PublicaciónConsejo EditorialAlcance y PolíticasRevisión por ParesPreguntas FrecuentesEnviar
BIBLIOTECARIOS
TestimoniosSuscripcionesAccesoRecursosConsejo Asesor de BibliotecasPreguntas Frecuentes
INVESTIGACIÓN
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchivo
EDUCACIÓN
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualCentro de Recursos para ProfesoresSitio de Profesores
Términos y Condiciones de Uso
Política de Privacidad
Políticas

Videos de Conceptos Relacionados

Second Law: Motion under Same Force01:10

Second Law: Motion under Same Force

Newton's laws can be applied to bodies at rest and bodies in motion. Newton's first law is applied to bodies in equilibrium, whereas the second law applies to accelerating bodies. To study accelerating bodies, first, the directions and magnitudes of acceleration and the applied forces are determined. Then, the free-body diagram is constructed, and Newton's second law is applied, considering the components of the forces in the x and y directions.
Let's imagine a person is standing on a weighing...
Acceleration due to Gravity on Earth01:21

Acceleration due to Gravity on Earth

According to Newton's law of gravitation, the gravitational force on a body is proportional to its mass. According to Newton's second law of motion, the acceleration produced by an external force is inversely proportional to the force. Hence, the acceleration of an object under an external force of gravitation is independent of its mass.
The acceleration of an object close to the Earth, because of the Earth's gravitational pull, is called the acceleration due to gravity. It is always directed...
Variation in Acceleration due to Gravity near the Earth's Surface01:20

Variation in Acceleration due to Gravity near the Earth's Surface

An object's apparent weight is its weight measured by a spring balance at its location. It is different from its true weight, the force with which the Earth pulls it, because of the Earth's rotation. Mathematically, an object's apparent weight equals its true weight minus the centripetal force that keeps it in a circular motion along with the Earth's surface every 24 hours.
The difference between the true and apparent weights is proportional to the square of the Earth's angular speed. Since the...
Internal Forces and Center of Gravity01:25

Internal Forces and Center of Gravity

Internal forces and the center of gravity are fundamental concepts in mechanics, playing a crucial role in understanding the behavior and stability of structures and objects under various conditions. A comprehensive understanding of these principles is essential for engineers, architects, and designers to create safe and efficient systems.
Internal forces are generated within a body due to the interaction between its particles. These forces can be categorized into tension, compression, and...
Measuring Acceleration Due to Gravity01:12

Measuring Acceleration Due to Gravity

Consider a coffee mug hanging on a hook in a pantry. If the mug gets knocked, it oscillates back and forth like a pendulum until the oscillations die out.
A simple pendulum can be described as a point mass and a string. Meanwhile, a physical pendulum is any object whose oscillations are similar to a simple pendulum, but cannot be modeled as a point mass on a string because its mass is distributed over a larger area. The behavior of a physical pendulum can be modeled using the principles of...
Acceleration due to Gravity on Earth00:55

Acceleration due to Gravity on Earth

Newton's second law is closely related to his first law of motion. It mathematically gives the cause-and-effect relationship between force and changes in motion. Newton's second law is quantitative and is used extensively to calculate what happens in situations involving a force. All external forces acting on a system add together to produce a net force Fnet. A larger net external force produces a larger acceleration. This acceleration is directly proportional to, and in the same direction as,...

También podría leer

Artículos Relacionados

Artículos vinculados a este trabajo por autores compartidos, revista y gráfico de citas.

Ordenar por
Same author

Roll tilt self-motion direction discrimination training: First evidence for perceptual learning.

Attention, perception & psychophysics·2020
Same author

Motion perception during variable-radius swing motion in darkness.

Journal of neurophysiology·2009
Same author

Multisensory control of human upright stance.

Experimental brain research·2005
Same author

An internal model of head kinematics predicts the influence of head orientation on reflexive eye movements.

Journal of neural engineering·2005
Same author

Reproduction of ON-center and OFF-center self-rotations.

Experimental brain research·2005
Same author

Abnormal resonance behavior of the postural control loop in Parkinson's disease.

Experimental brain research·2004

Video Experimental Relacionado

Updated: Jul 8, 2026

Oscillation and Reaction Board Techniques for Estimating Inertial Properties of a Below-knee Prosthesis
08:08

Oscillation and Reaction Board Techniques for Estimating Inertial Properties of a Below-knee Prosthesis

Published on: May 8, 2014

Los humanos utilizan modelos internos para estimar la gravedad y la aceleración lineal.

D M Merfeld1, L Zupan, R J Peterka

  • 1Neurological Sciences Institute, Oregon Health Sciences University, Portland 97209, USA. dan_merfeld@meei.harvard.edu

Nature
|April 27, 1999
PubMed
Resumen

El cerebro utiliza modelos internos para distinguir la gravedad de la aceleración lineal. Incluso sin movimiento real, el sistema nervioso puede estimar la aceleración lineal, ayudando al procesamiento sensorial.

Palabras clave:
La disciplina de la NASA en la neurociencia es la neurociencia.No perteneciente al Centro de la NASA.

Más Videos Relacionados

Simulation of Human-induced Vibrations Based on the Characterized In-field Pedestrian Behavior
10:52

Simulation of Human-induced Vibrations Based on the Characterized In-field Pedestrian Behavior

Published on: April 13, 2016

Subject-specific Musculoskeletal Model for Studying Bone Strain During Dynamic Motion
09:32

Subject-specific Musculoskeletal Model for Studying Bone Strain During Dynamic Motion

Published on: April 11, 2018

Videos de Experimentos Relacionados

Last Updated: Jul 8, 2026

Oscillation and Reaction Board Techniques for Estimating Inertial Properties of a Below-knee Prosthesis
08:08

Oscillation and Reaction Board Techniques for Estimating Inertial Properties of a Below-knee Prosthesis

Published on: May 8, 2014

Simulation of Human-induced Vibrations Based on the Characterized In-field Pedestrian Behavior
10:52

Simulation of Human-induced Vibrations Based on the Characterized In-field Pedestrian Behavior

Published on: April 13, 2016

Subject-specific Musculoskeletal Model for Studying Bone Strain During Dynamic Motion
09:32

Subject-specific Musculoskeletal Model for Studying Bone Strain During Dynamic Motion

Published on: April 11, 2018

Área de la Ciencia:

  • La neurociencia es la neurociencia.
  • Procesamiento Sensorial Procesamiento Sensorial
  • El control del motor es el control del motor.

Sus antecedentes:

  • Los sistemas sensoriales a menudo proporcionan información ambigua, lo que requiere procesos neuronales para la resolución de la ambigüedad.
  • Distinguir la aceleración lineal de la gravedad es un desafío común, como lo establece el principio de equivalencia de Einstein.
  • La evidencia experimental directa para los modelos internos en el procesamiento sensorial es limitada.

Objetivo del estudio:

  • Investigar si el cerebro emplea modelos internos para estimar la aceleración lineal y la gravedad.
  • Determinar cómo los humanos procesan las señales ambiguas de la gravedad y la aceleración lineal.
  • Proporcionar evidencia experimental para el papel de los modelos internos en el procesamiento sensorial.

Principales métodos:

  • Los sujetos fueron sometidos a una inclinación post-rotacional después de una rotación de velocidad constante alrededor de un eje vertical de la Tierra.
  • Observaron y analizaron los movimientos oculares evocados por la inclinación post-rotacional.
  • Comparó las respuestas experimentales con las predicciones de simulaciones de modelos internos.

Principales resultados:

  • Los movimientos oculares mostraron un componente que compensaba la aceleración lineal estimada sin la aceleración lineal real.
  • Las respuestas medidas se alinean con las predicciones del modelo interno de estimaciones de aceleración lineal no cero.
  • Se demostró que el sistema nervioso puede generar una percepción de aceleración lineal cuando no está presente.

Conclusiones:

  • El cerebro utiliza modelos internos para interpretar información sensorial ambigua, específicamente para distinguir la aceleración lineal de la gravedad.
  • Estos modelos internos pueden conducir a la percepción de la aceleración lineal incluso en ausencia de aceleración física.
  • Los hallazgos apoyan la hipótesis de que los modelos internos juegan un papel crucial en la integración sensorimotora y el procesamiento sensorial.