Related Experiment Video
Updated: May 2, 2026
13:51
Cross-Modal Multivariate Pattern Analysis
Published on: November 9, 2011
21.0K
Masking unveils pre-amodal completion representation in visual search
1Department of Psychology, The Johns Hopkins University, Baltimore, Maryland 21218, USA. rrausch@jhu.edu
Nature
|March 27, 2001
Summary
Visual search can access pre-completion information for partially occluded objects. However, this access is time-limited, depending on the size of the occluded area, impacting search efficiency.
Area of Science:
- Cognitive Psychology
- Neuroscience
- Visual Perception
Background:
- Amodal completion is the perceptual filling-in of occluded object parts.
- Pre-completion visual information exists for approximately 200 ms.
- Previous research suggested limited use of pre-completion information in visual search.
Purpose of the Study:
- To investigate whether visual search utilizes pre-completion representations.
- To determine the temporal constraints and influencing factors of pre-completion information access.
Main Methods:
- Visual search tasks involving partially occluded targets.
- Manipulation of the size of the occluded region.
- Measurement of search times and analysis of pre-completion information access.
Main Results:
- Visual search demonstrates access to pre-completion representations.
- Access duration is limited and contingent on the occluded region's size.
- Search performance is affected by the temporal availability of pre-completion information.
Conclusions:
- The visual system can utilize pre-completion information during object perception.
- The efficiency of using this information is constrained by time and occlusion extent.
- Findings challenge previous assumptions about the inaccessibility of early visual information.
More Related Videos
09:27Using Eye Movements Recorded in the Visual World Paradigm to Explore the Online Processing of Spoken Language
Published on: October 13, 2018
10.3K
07:13Author Spotlight: An Efficient and Robust Software for Automated Fusion of Multiple Preclinical Imaging Modalities
Published on: October 27, 2023
2.0K
Related Concept Videos
02:07Blind Procedures
10.8K
Ideally, the people who observe and record the children’s behavior are unaware of who was assigned to the experimental or control group, in order to control for experimenter bias. Experimenter bias refers to the possibility that a researcher’s expectations might skew the results of the study. Remember, conducting an experiment requires a lot of planning, and the people involved in the research project have a vested interest in supporting their hypotheses. If the observers knew which...
10.8K
01:13Nonconscious Mimicry
3.6K
Nonconscious mimicry occurs when individuals alter their mannerisms to match the behaviors and expressions of those nearby, without intention.
3.6K
01:07What is a Mode?
20.3K
The mode is one of the commonly used measures of a central tendency. It is defined as the most frequent value in a data set.
There can be more than one mode in a data set if multiple values have the same highest frequency. For instance, suppose that the Statistics exam scores of 20 students are: 50; 53; 59; 59; 63; 63; 72; 72; 72; 72; 72; 76; 78; 81; 83; 84; 84; 84; 90; 93. Here, the mode is 72, as it occurs most frequently, five times.
A data set with two modes is called bimodal. For example,...
There can be more than one mode in a data set if multiple values have the same highest frequency. For instance, suppose that the Statistics exam scores of 20 students are: 50; 53; 59; 59; 63; 63; 72; 72; 72; 72; 72; 76; 78; 81; 83; 84; 84; 84; 90; 93. Here, the mode is 72, as it occurs most frequently, five times.
A data set with two modes is called bimodal. For example,...
20.3K
01:19Masking and Demasking Agents
4.1K
EDTA titrations may necessitate masking and demasking agents to temporarily protect a particular metal ion in a mixture from the EDTA reaction. These agents facilitate the sequential analysis of the metal ions by forming stable complexes with some—but not all—metal ions during certain steps.
There are many masking agents, such as cyanide, fluoride, triethanolamine, thiourea, and 2,3-bis(sulfanyl)propan-1-ol (formerly 2,3-dimercapto-1-propanol), with the masking agent chosen based on...
There are many masking agents, such as cyanide, fluoride, triethanolamine, thiourea, and 2,3-bis(sulfanyl)propan-1-ol (formerly 2,3-dimercapto-1-propanol), with the masking agent chosen based on...
4.1K
01:15Sensory Modalities
4.1K
Sensation typically is the process by which the sensory receptors and sense organs detect stimuli from the internal and external environment and transmit this information to the central nervous system for processing.
General senses refer to the broad category of sensory information detected by receptors in the body and can be further grouped into somatic and visceral senses. Somatic sensations include touch, pressure, temperature, and pain and are essential for navigating our environment and...
General senses refer to the broad category of sensory information detected by receptors in the body and can be further grouped into somatic and visceral senses. Somatic sensations include touch, pressure, temperature, and pain and are essential for navigating our environment and...
4.1K
01:29Non-Verbal Cues
774
Non-verbal communication extends beyond gestures and facial expressions to include vocal elements known as paralanguage. Paralanguage consists of non-verbal vocal cues such as pitch, loudness, speech rate, pauses, and non-verbal vocalizations like laughter, sighs, and moans. These elements not only accompany speech but also provide critical emotional and contextual information.The Role of Paralanguage in CommunicationParalanguage adds depth to spoken language by conveying emotions and...
774