scholarly journals The role of color in expert object recognition

2014 ◽  
Vol 14 (9) ◽  
pp. 9-9 ◽  
Author(s):  
S. Hagen ◽  
Q. C. Vuong ◽  
L. S. Scott ◽  
T. Curran ◽  
J. W. Tanaka
Keyword(s):  
Object Recognition

The role of color information on object recognition: A review and meta-analysis

2011 ◽  
Vol 138 (1) ◽  
pp. 244-253 ◽  
Author(s):  
Inês Bramão ◽  
Alexandra Reis ◽  
Karl Magnus Petersson ◽  
Luís Faísca
Keyword(s):  
Object Recognition ◽  
Meta Analysis ◽  
Color Information

scholarly journals Object Recognition and Localization: The Role of Tactile Sensors

Sensors ◽  
2014 ◽  
Vol 14 (2) ◽  
pp. 3227-3266 ◽  
Author(s):  
Achint Aggarwal ◽  
Frank Kirchner
Keyword(s):  
Object Recognition ◽  
Tactile Sensors

scholarly journals The role of GFAP and vimentin in learning and memory

2019 ◽  
Vol 400 (9) ◽  
pp. 1147-1156 ◽  
Author(s):  
Ulrika Wilhelmsson ◽  
Andrea Pozo-Rodrigalvarez ◽  
Marie Kalm ◽  
Yolanda de Pablo ◽  
Åsa Widestrand ◽  
...  
Keyword(s):  
Object Recognition ◽  
Fear Conditioning ◽  
Morris Water Maze ◽  
Exploratory Behavior ◽  
Water Maze ◽  
Trace Fear Conditioning ◽  
Memory Extinction ◽  
Post Traumatic ◽  
Trace Fear

Abstract Intermediate filaments (also termed nanofilaments) are involved in many cellular functions and play important roles in cellular responses to stress. The upregulation of glial fibrillary acidic protein (GFAP) and vimentin (Vim), intermediate filament proteins of astrocytes, is the hallmark of astrocyte activation and reactive gliosis in response to injury, ischemia or neurodegeneration. Reactive gliosis is essential for the protective role of astrocytes at acute stages of neurotrauma or ischemic stroke. However, GFAP and Vim were also linked to neural plasticity and regenerative responses in healthy and injured brain. Mice deficient for GFAP and vimentin (GFAP−/−Vim−/−) exhibit increased post-traumatic synaptic plasticity and increased basal and post-traumatic hippocampal neurogenesis. Here we assessed the locomotor and exploratory behavior of GFAP−/−Vim−/− mice, their learning, memory and memory extinction, by using the open field, object recognition and Morris water maze tests, trace fear conditioning, and by recording reversal learning in IntelliCages. While the locomotion, exploratory behavior and learning of GFAP−/−Vim−/− mice, as assessed by object recognition, the Morris water maze, and trace fear conditioning tests, were comparable to wildtype mice, GFAP−/−Vim−/− mice showed more pronounced memory extinction when tested in IntelliCages, a finding compatible with the scenario of an increased rate of reorganization of the hippocampal circuitry.

The Role of Surface Information in Object Recognition: Studies of a Visual Form Agnosic and Normal Subjects

Perception ◽  
1994 ◽  
Vol 23 (12) ◽  
pp. 1457-1481 ◽  
Author(s):  
G Keith Humphrey ◽  
Melvyn A Goodale ◽  
Lorna S Jakobson ◽  
Philip Servos
Keyword(s):  
Object Recognition ◽  
Surface Properties ◽  
Fruits And Vegetables ◽  
Visual Analysis ◽  
Normal Subjects ◽  
Object Naming ◽  
Visual Form ◽  
Control Subjects ◽  
Natural Objects

Three experiments were conducted to explore the role of colour and other surface properties in object recognition. The effects of manipulating the availability of surface-based information on object naming in a patient with visual form agnosia and in two age-matched control subjects were examined in experiment 1. The objects were presented under seven different viewing conditions ranging from a full view of the actual objects to line drawings of those same objects. The presence of colour and other surface properties aided the recognition of natural objects such as fruits and vegetables in both the patient and the control subjects. Experiment 2 was focused on four of the critical viewing conditions used in experiment 1 but with a large sample of normal subjects. As in experiment 1, it was found that surface properties, particularly colour, aided the naming of natural objects. The presence of colour did not facilitate the naming of manufactured objects. Experiment 3 was focused on possible ways by which colour could assist in the recognition of natural objects and it was found that object naming was facilitated only if the objects were presented in their usual colour. The results of the experiments show that colour does improve recognition for some types of objects and that the improvement occurs at a high level of visual analysis.

A Hippocampal Signature of Perceptual Learning in Object Recognition

2015 ◽  
Vol 27 (4) ◽  
pp. 787-797 ◽  
Author(s):  
Matthias Guggenmos ◽  
Marcus Rothkirch ◽  
Klaus Obermayer ◽  
John-Dylan Haynes ◽  
Philipp Sterzer
Keyword(s):  
Object Recognition ◽  
Perceptual Learning ◽  
Transfer Of Learning ◽  
Behavioral Training ◽  
Enhancing Effect ◽  
Monetary Rewards ◽  
Before And After ◽  
Perceptual Performance ◽  
Recognition Of Objects

Perceptual learning is the improvement in perceptual performance through training or exposure. Here, we used fMRI before and after extensive behavioral training to investigate the effects of perceptual learning on the recognition of objects under challenging viewing conditions. Objects belonged either to trained or untrained categories. Trained categories were further subdivided into trained and untrained exemplars and were coupled with high or low monetary rewards during training. After a 3-day training, object recognition was markedly improved. Although there was a considerable transfer of learning to untrained exemplars within categories, an enhancing effect of reward reinforcement was specific to trained exemplars. fMRI showed that hippocampus responses to both trained and untrained exemplars of trained categories were enhanced by perceptual learning and correlated with the effect of reward reinforcement. Our results suggest a key role of hippocampus in object recognition after perceptual learning.

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