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Your search keyword '"Hyung Wook Kwon"' showing total 4 results
Start Over Author "Hyung Wook Kwon" Journal journal of experimental biology
4 results on '"Hyung Wook Kwon"'

1. Antennal movements reveal associative learning in the American cockroachPeriplaneta americana

Author

David D. Lent and Hyung Wook Kwon

Subjects
Male, Time Factors, animal structures, Physiology, Conditioning, Classical, Video Recording, Cockroaches, Motor Activity, Aquatic Science, Immobilization, Memory, biology.animal, Animals, Association (psychology), Molecular Biology, Ecology, Evolution, Behavior and Systematics, Cockroach, Communication, biology, business.industry, Association Learning, Classical conditioning, Content-addressable memory, biology.organism_classification, Associative learning, Odor, Insect Science, Odorants, Animal Science and Zoology, Cues, American cockroach, Psychology, business, Photic Stimulation, Periplaneta
Abstract

SUMMARYUsing antennal movements as an indicator of learning and retention, an associative learning paradigm has been developed to investigate associative memory between visual and olfactory stimuli. Experiments were performed on the restrained cockroach Periplaneta americana, which normally moves its antennae towards a localized odor source. Such `antennal projection responses'(APRs) are exploited to demonstrate long-term memory, where an APR is elicited by a conditioned stimulus (CS; green light point source) paired with a spatially coincident odor [the unconditioned stimulus (US)]. Association of the CS with the US is established after five trials. Before training, a visual cue alone does not elicit an APR. This behavior is elicited by a visual cue only after pairing it with an odor stimulus. The acquired APR to the green light cue persists for up to 72 h, indicative of long-term memory. This paradigm is thus suitable for future studies of neural correlates of learning and memory on restrained animals.

Published
2004

2. Spatial learning in the restrained American cockroach Periplaneta americana

Author

Nicholas J. Strausfeld, Hyung Wook Kwon, and David D. Lent

Subjects
Male, genetic structures, Physiology, Video Recording, Spatial Behavior, Cockroaches, Motor Activity, Aquatic Science, Stimulus (physiology), Immobilization, Orientation, Animals, Molecular Biology, Place memory, Ecology, Evolution, Behavior and Systematics, Communication, biology, business.industry, Association Learning, biology.organism_classification, Insect Science, Odorants, Spatial learning, Conditioning, Animal Science and Zoology, Cues, American cockroach, business, Psychology, Neuroscience, Photic Stimulation, Periplaneta
Abstract

SUMMARY Spatial learning abilities were tested in restrained cockroaches by observing antennal projection responses towards the positions of a learned visual cue perceived monocularly by one eye in the context of a second stimulus provided to the contralateral eye. Memory of the position of the conditioning stimulus relative to the contralateral reference stimulus was tested by altering the relative positions of the two stimuli. Memory of the conditioning stimulus is retained if the angle between the conditioning stimulus and the contralateral reference stimulus is maintained. The results suggest that during learning the insect recognizes spatial relationships between the conditioning stimulus and the contralateral reference stimulus. Possible mechanisms, such as retinotopic matching versus angular matching, are discussed.

Published
2004

3. Antennal movements reveal associative learning in the American cockroach Periplaneta americana.

Author

Lent, David D. and Hyung-Wook Kwon, David D.

Subjects
*PAIRED associate learning, *INSECT behavior, *SMELL, *ANIMAL memory, *AMERICAN cockroach, *COCKROACHES
Abstract

Using antennal movements as an indicator of learning and retention, an associative learning paradigm has been developed to investigate associative memory between visual and olfactory stimuli. Experiments were performed on the restrained cockroach Periplaneta americana, which normally moves its antennae towards a localized odor source. Such 'antennal projection responses' (APRs) are exploited to demonstrate long-term memory, where an APR is elicited by a conditioned stimulus (CS; green light point source) paired with a spatially coincident odor [the unconditioned stimulus (US)]. Association of the CS with the US is established after five trials. Before training, a visual cue alone does not elicit an APR. This behavior is elicited by a visual cue only after pairing it with an odor stimulus. The acquired APR to the green light cue persists for up to 72 h, indicative of long-term memory. This paradigm is thus suitable for future studies of neural correlates of learning and memory on restrained animals. Key words: behavior; insect; cockroach; Periplaneta americana; memory; multimodal integration; antennal movement. [ABSTRACT FROM AUTHOR]

Published
2004
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4. Spatial learning in the restrained American cockroach Periplaneta americana.

Author

Hyung-Wook Kwon, David D., Lent, David D., and Strausfeld, Nicholas J.

Subjects
*LEARNING ability, *SPATIAL ability, *SPATIAL behavior in animals, *VISUAL perception, *AMERICAN cockroach, *COCKROACHES
Abstract

Spatial learning abilities were tested in restrained cockroaches by observing antennal projection responses towards the positions of a learned visual cue perceived monocularly by one eye in the context of a second stimulus provided to the contralateral eye. Memory of the position of the conditioning stimulus relative to the contralateral reference stimulus was tested by altering the relative positions of the two stimuli. Memory of the conditioning stimulus is retained if the angle between the conditioning stimulus and the contralateral reference stimulus is maintained. The results suggest that during learning the insect recognizes spatial relationships between the conditioning stimulus and the contralateral reference stimulus. Possible mechanisms, such as retinotopic matching versus angular matching, are discussed. Key words: place memory; cockroach; Periplaneta americana; antennal movement; behavior. [ABSTRACT FROM AUTHOR]

Published
2004
Full Text
View/download PDF

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