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Related Concept Videos

Factors Affecting Perception01:25

Factors Affecting Perception

Perception is influenced by perceptual set, context, motivation, and emotion. Perceptual set, or perceptual expectancy, refers to the tendency to perceive things in a particular way, influenced by previous experiences and expectations. This phenomenon affects the interpretation of stimuli, creating a set of mental tendencies and assumptions that impact sensory perceptions of sound, taste, touch, and sight.
An illustrative example of a perceptual set is the scenario where an airline pilot told...
Perception01:28

Perception

Perception is a fundamental psychological process that enables individuals to organize, interpret, and consciously experience sensory information. This process is crucial for understanding and interacting with the world around us. It includes both bottom-up and top-down processing, each playing a distinct role in how we perceive our environment.
Bottom-up processing begins at the sensory level, where receptors detect external environmental stimuli. These could include the tactile sensation of...
Sensory Perception: Organization of the Somatosensory System01:11

Sensory Perception: Organization of the Somatosensory System

The somatosensory system is the central and peripheral nervous system component that senses and processes touch, pressure, pain, temperature, and body position or proprioception. The process of sensation takes place at three levels:
The receptor level:
The receptor level is the first stage of sensation. It involves the detection of a stimulus by specialized sensory receptors. The stimulus must arrive within the receptor's receptive field. Next, the receptor converts the energy of the stimulus...
Sensation01:21

Sensation

Sensory receptors are specialized neurons that respond to specific types of external stimuli, initiating the process known as sensation. This occurs when sensory input, such as light entering the eye, is detected by these receptors, causing chemical changes in the cells of the retina. These cells then convert the sensory stimulus into action potentials that are transmitted to the central nervous system, a process termed transduction.
Absolute thresholds can quantify the sensitivity of sensory...
Major Somatic Sensory Pathways01:28

Major Somatic Sensory Pathways

Sensory impulses related to touch, pressure, vibration, and proprioception from various body parts, such as the limbs, trunk, neck, and posterior head, travel to the cerebral cortex through the posterior column-medial lemniscus pathway. The pathway’s name derives from the two white-matter tracts that convey the impulses: the spinal cord's posterior column and the brainstem's medial lemniscus. First-order sensory neurons extend their axons into the spinal cord, forming the posterior columns...
Auditory Perception01:17

Auditory Perception

The auditory system is essential for sound perception, utilizing various critical structures. When sound waves enter the outer ear, they travel through the ear canal and cause the eardrum to vibrate. These vibrations are then transmitted to the middle ear, where three tiny bones – the malleus, incus, and stapes – amplify the sound. This amplification is crucial, as it ensures that the sound vibrations are strong enough to be conveyed to the inner ear. These vibrations then reach the cochlea, a...

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Sensory and perceptual interactions in weight perception.

André B Valdez1, Eric L Amazeen

  • 1Department of Psychology, Arizona State University, Tempe, Arizona 85287, USA. andre.valdez@asu.edu

Perception & Psychophysics
|June 18, 2008
PubMed
Summary

Perceived heaviness is influenced by object size and mass. Interactions between these factors became more noticeable with visual input and when object diameter changed, impacting how we sense and perceive weight.

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Area of Science:

  • Psychology
  • Human Perception
  • Sensory Science

Background:

  • Previous research indicates sensory interactions influence perceived heaviness.
  • Understanding the interplay between object properties and perception is crucial.

Purpose of the Study:

  • To investigate the influence of length, diameter, and mass on perceived heaviness.
  • To analyze sensory and perceptual interactions between mass and size during tactile perception.
  • To determine the role of vision in modulating these interactions.

Main Methods:

  • Conducted four experiments utilizing multidimensional signal detection analysis.
  • Assessed haptic perception of heaviness under conditions with and without vision.
  • Systematically varied object length, diameter, and mass.

Main Results:

  • Sensory interactions were consistently observed across all experiments.
  • Novel perceptual interactions emerged, particularly when object diameter varied.
  • These perceptual interactions were amplified when vision was available.

Conclusions:

  • Both sensory and perceptual interactions significantly affect the perception of heaviness.
  • Vision plays a critical role in modulating perceptual interactions related to object size and mass.
  • The interplay between haptic and visual modalities influences how we interpret physical properties.