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Related Concept Videos

Gestalt Principles of Perception01:21

Gestalt Principles of Perception

Gestalt principles provide a framework for understanding how humans perceive objects as unified wholes within their context. These principles are essential in explaining the cognitive processes that make sense of complex visual stimuli by organizing them into coherent groups. One fundamental principle is proximity, which posits that objects located close to each other are perceived as a collective group. For instance, when dots are positioned near one another, the visual system interprets them...
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...
Depth Perception and Spatial Vision01:15

Depth Perception and Spatial Vision

Depth perception is the ability to perceive objects three-dimensionally. It relies on two types of cues: binocular and monocular. Binocular cues depend on the combination of images from both eyes and how the eyes work together. Since the eyes are in slightly different positions, each eye captures a slightly different image. This disparity between images, known as binocular disparity, helps the brain interpret depth. When the brain compares these images, it determines the distance to an object.

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Related Experiment Video

Updated: Jun 1, 2026

Estimation of Contact Regions Between Hands and Objects During Human Multi-Digit Grasping
09:41

Estimation of Contact Regions Between Hands and Objects During Human Multi-Digit Grasping

Published on: April 21, 2023

"Graspability" of objects affects gaze patterns during perception and action tasks.

Loni Desanghere1, J J Marotta

  • 1Perception and Action Lab, Department of Psychology, University of Manitoba, Winnipeg, Canada. umrhode@cc.umanitoba.ca

Experimental Brain Research
|May 21, 2011
PubMed
Summary
This summary is machine-generated.

Gaze patterns during object grasping and perception align for real objects, with initial fixations on the top edge, then the center of mass (COM). This contrasts with computer-generated objects, showing similar fixation areas across tasks.

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Related Experiment Videos

Last Updated: Jun 1, 2026

Estimation of Contact Regions Between Hands and Objects During Human Multi-Digit Grasping
09:41

Estimation of Contact Regions Between Hands and Objects During Human Multi-Digit Grasping

Published on: April 21, 2023

Design and Use of an Apparatus for Presenting Graspable Objects in 3D Workspace
09:11

Design and Use of an Apparatus for Presenting Graspable Objects in 3D Workspace

Published on: August 8, 2019

Frame-by-Frame Video Analysis of Idiosyncratic Reach-to-Grasp Movements in Humans
10:51

Frame-by-Frame Video Analysis of Idiosyncratic Reach-to-Grasp Movements in Humans

Published on: January 15, 2018

Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Human Motor Control

Background:

  • Gaze typically focuses on the center of mass (COM) during perceptual tasks.
  • Eye fixations during object grasping are directed towards fingertip locations.
  • Previous research often used artificial constraints or simplified stimuli.

Purpose of the Study:

  • To investigate gaze fixations during reaching and grasping tasks.
  • To compare these fixations with those during perceptual size estimation.
  • To examine the influence of real versus computer-generated objects on gaze behavior.

Main Methods:

  • Participants performed reaching and grasping tasks with symmetrical objects.
  • Gaze fixations were recorded during both action and perception tasks.
  • Experiments utilized both real and computer-generated objects to assess differences.

Main Results:

  • Gaze patterns were similar for real objects in both perception and action tasks.
  • Participants fixated the top edge then the COM for real objects.
  • Computer-generated objects showed reversed fixation patterns (COM then top edge).

Conclusions:

  • Fixation locations show consistency across perception and action tasks for real objects.
  • Task-relevant information (e.g., object size) drives fixation consistency.
  • The area between the center and top edge is consistently fixated across tasks and stimuli types.