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  1. Article ; Online: Analysis of visual discrimination in Japanese eel (Anguilla japonica).

    Watanabe, Shigeru

    Behavioural brain research

    2024  Volume 463, Page(s) 114916

    Abstract: Japanese eels were trained to discriminate between a checkerboard panel and a plain gray panel in a circular pool with three pipes. One of the pipes was open, whereas the others were closed. The correct choice of discriminative stimulus was reinforced by ...

    Abstract Japanese eels were trained to discriminate between a checkerboard panel and a plain gray panel in a circular pool with three pipes. One of the pipes was open, whereas the others were closed. The correct choice of discriminative stimulus was reinforced by entering the pipe. When the panels were displayed vertically (on the wall), the eels successfully learned discrimination, but they were unable to acquire the task when the panels were presented horizontally (on the floor). Enucleation of the retina impaired discrimination, whereas ablation of the olfactory plates did not. In the second experiment, the eels underwent three tests after discriminative training with vertical stimuli displayed. When plain black or white panels were presented instead of a checkerboard panel, the eels could not discriminate. Thus, the discriminative stimulus must have both black and white components. The eels exhibited a generalization gradient along the fines of the checkerboard. Finally, the pallium was damaged by coagulation, and the eels did not maintain the discrimination after the lesions. The behavioral deficits were classified into successful relearning and no relearning. Damage to the dorso-lateral (DL) or dorso-central (DC) pallium was associated with severe impairment (no relearning), although it was not possible to isolate the particular brain area or combination of brain areas which was required. The DL damage probably causes memory deficits, but the deficits caused by the DC damage might be motor or motivational deficits.
    MeSH term(s) Animals ; Anguilla ; Visual Perception ; Learning
    Language English
    Publishing date 2024-02-23
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 449927-x
    ISSN 1872-7549 ; 0166-4328
    ISSN (online) 1872-7549
    ISSN 0166-4328
    DOI 10.1016/j.bbr.2024.114916
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

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  2. Book ; Online ; E-Book: Evolution of the brain, cognition, and emotion in vertebrates

    Watanabe, Shigeru / Hofman, Michel A. / Shimizu, Toru

    (Brain science)

    2017  

    Author's details Shigeru Watanabe, Michel A Hofman, Toru Shimizu editors
    Series title Brain science
    Keywords Medicine ; Neurosciences ; Behavioral sciences ; Animal physiology
    Subject code 612.8
    Language English
    Size 1 Online-Ressource (X, 299 Seiten), Illustrationen
    Publisher Springer
    Publishing place Tokyo
    Publishing country Japan
    Document type Book ; Online ; E-Book
    Remark Zugriff für angemeldete ZB MED-Nutzerinnen und -Nutzer
    HBZ-ID HT019468792
    ISBN 978-4-431-56559-8 ; 9784431565574 ; 4-431-56559-0 ; 4431565574
    DOI 10.1007/978-4-431-56559-8
    Database ZB MED Catalogue: Medicine, Health, Nutrition, Environment, Agriculture

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  3. Article: Are mirrors aversive or rewarding for mice? Insights from the mirror preference test.

    Watanabe, Shigeru

    Frontiers in behavioral neuroscience

    2023  Volume 17, Page(s) 1137206

    Language English
    Publishing date 2023-04-13
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2452960-6
    ISSN 1662-5153
    ISSN 1662-5153
    DOI 10.3389/fnbeh.2023.1137206
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: Infrared thermography for non-invasive measurement of social inequality aversion in rodents and potential usefulness for future animal-friendly studies.

    Watanabe, Shigeru

    Frontiers in behavioral neuroscience

    2023  Volume 17, Page(s) 1131427

    Abstract: Infrared thermography is a method that detects thermal radiation energy and can measure the body surface temperature of animals from a distance. While rectal temperature has traditionally been used to measure animals' core temperature, thermal imaging ... ...

    Abstract Infrared thermography is a method that detects thermal radiation energy and can measure the body surface temperature of animals from a distance. While rectal temperature has traditionally been used to measure animals' core temperature, thermal imaging can avoid the stress and potential rise of body temperature deriving from handling of the animals. Additionally, being non-invasive and contactless, thermal imaging allows free movement of the animals. The validity of this technique as a psychophysiological method has been proven in a series of stress-induced hyperthermia (SIH) studies of mice under social inequality conditions. Restraint in a holder elicits SIH in mice. A restrained mouse surrounded by freely moving cage mates displays increased SIH suggesting that social inequality enhances the stress. Social inequality can be examined also in unrestrained mice, in particular through unequal distribution of food. In this protocol, a food-deprived mouse is given a small piece of cheese, while its cage mate is given a large piece of cheese. This inequity causes SIH, suggesting social inequality aversion in mice. Thus, social inequality in different situations similarly increased SIH. Importantly, in future studies infrared thermography could also be used to evaluate emotional arousal states different from stress (for example to assess reactivity to rewards or in social and sexual preference tests). Moreover, the technique could be used to investigate also cognitive arousal induced by novelty. Indeed, infrared thermography could be a particularly useful tool for animal-friendly studies of cognition and emotion in rodents.
    Language English
    Publishing date 2023-03-06
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2452960-6
    ISSN 1662-5153
    ISSN 1662-5153
    DOI 10.3389/fnbeh.2023.1131427
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  5. Article ; Online: Impairments in spatial learning by telencephalic lesions in Japanese eels (Anguilla japonica).

    Watanabe, Shigeru

    Behavioural brain research

    2021  Volume 418, Page(s) 113626

    Abstract: This study aimed to use Japanese eels (Anguilla japonica) as subjects to examine the effects of telencephalic lesions on spatial learning. Ten Japanese eels were trained on a Morris-type spatial learning task. Four pipes were placed in a pool; however, ... ...

    Abstract This study aimed to use Japanese eels (Anguilla japonica) as subjects to examine the effects of telencephalic lesions on spatial learning. Ten Japanese eels were trained on a Morris-type spatial learning task. Four pipes were placed in a pool; however, the eels could hide in only one of these pipes. The learning task ensured that the eels learned about the position of the open pipe. Subsequently, their telencephalons were damaged. The lesioned eels could not maintain their learning and demonstrated deficits in re-learning as some of them were unable to relearn the task. An analysis of the lesion sizes revealed that while damage to the dorsolateral pallium correlates with maintenance of learning, damage to the dorsomedial pallium correlates with re-learning.
    MeSH term(s) Anguilla/physiology ; Animals ; Avoidance Learning/physiology ; Spatial Learning/physiology ; Telencephalon/physiopathology
    Language English
    Publishing date 2021-10-12
    Publishing country Netherlands
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 449927-x
    ISSN 1872-7549 ; 0166-4328
    ISSN (online) 1872-7549
    ISSN 0166-4328
    DOI 10.1016/j.bbr.2021.113626
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 1599: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
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  6. Article: Spatial Learning in Japanese Eels Using Extra- and Intra-Maze Cues.

    Watanabe, Shigeru

    Frontiers in psychology

    2020  Volume 11, Page(s) 1350

    Abstract: Japanese eels ( ...

    Abstract Japanese eels (
    Language English
    Publishing date 2020-07-16
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2563826-9
    ISSN 1664-1078
    ISSN 1664-1078
    DOI 10.3389/fpsyg.2020.01350
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Discrimination of artificial starry sky by pigeons.

    Watanabe, Shigeru

    Learning & behavior

    2020  Volume 48, Issue 1, Page(s) 22–26

    Abstract: Night migratory birds use the star compass for their navigation. Here, I examined discrimination of a starry sky by a nonmigratory bird, the pigeon. Four pigeons were trained in an operant chamber to discriminate between an artificial starry sky created ... ...

    Abstract Night migratory birds use the star compass for their navigation. Here, I examined discrimination of a starry sky by a nonmigratory bird, the pigeon. Four pigeons were trained in an operant chamber to discriminate between an artificial starry sky created using software (Stella Theater Pro) and a black sky without stars. After they learned the task, they received three generalization tests. Test 1 presented a starry sky with different classes of stars (i.e., the number of stars was changed). Test 2 presented a starry sky at different times (i.e., a horizontal shift of the sky). Test 3 presented a starry sky at different latitudes (i.e., a vertical shift of the sky). The pigeons displayed a clear generalization gradient with a peak shift to the sky with more stars in Test 1 and a peak close to the original sky in Test 3, but almost a flat gradient in Test 2. Therefore, pigeons demonstrated stimulus control using the pattern of the stars, and they were more sensitive to the vertical shift than to the horizontal shift.
    MeSH term(s) Animals ; Columbidae ; Discrimination Learning ; Generalization, Psychological ; Learning
    Language English
    Publishing date 2020-02-11
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2048665-0
    ISSN 1543-4508 ; 1543-4494
    ISSN (online) 1543-4508
    ISSN 1543-4494
    DOI 10.3758/s13420-020-00420-x
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  8. Article ; Online: Rapid assessment of the dose-response relationship of methamphetamine using the progressive-dosing procedure.

    Watanabe, Shigeru

    Behavioural pharmacology

    2018  Volume 30, Issue 1, Page(s) 1–4

    Abstract: This paper describes a new method to rapidly obtain dose-response curves for a drug with rewarding properties using the conditioned place preference protocol. In the usual single-dosing procedure, different animals receive single, varying doses. Thus, a ... ...

    Abstract This paper describes a new method to rapidly obtain dose-response curves for a drug with rewarding properties using the conditioned place preference protocol. In the usual single-dosing procedure, different animals receive single, varying doses. Thus, a large number of animals are required to generate a curve. A new procedure, known as progressive dosing, alternates increasing drug doses with saline. In this way, the same animal can receive multiple tests. The dose-response curves of the rewarding effect of methamphetamine in mice were obtained using both single-dosing and progressive-dosing procedures. Although the progressive-dosing curves were not identical to the single-dosing curves, they showed a similar pattern. The progressive-dosing procedure was replicated with a new set of mice to confirm the reliability of the method and a dose-response curve similar to the previous one was obtained. This new method can reduce the number of animals required and shorten the duration of the experiment.
    MeSH term(s) Analysis of Variance ; Animals ; Central Nervous System Stimulants/pharmacology ; Conditioning, Classical/drug effects ; Discrimination (Psychology)/drug effects ; Dose-Response Relationship, Drug ; Drug Administration Schedule ; Male ; Methamphetamine/pharmacology ; Mice ; Mice, Inbred C57BL ; Time Factors
    Chemical Substances Central Nervous System Stimulants ; Methamphetamine (44RAL3456C)
    Language English
    Publishing date 2018-06-25
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1027374-8
    ISSN 1473-5849 ; 0955-8810
    ISSN (online) 1473-5849
    ISSN 0955-8810
    DOI 10.1097/FBP.0000000000000408
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 2883: Show issues Location:
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  9. Article ; Online: Social Modification of Amphetamine Reward.

    Watanabe, Shigeru

    International review of neurobiology

    2018  Volume 140, Page(s) 109–129

    Abstract: Social modification of drug reward in general and amphetamine reward in particular is reviewed here. The simplest explanation for the social facilitation of drug reward in the conditioned place preference paradigm is the summation of drug and social ... ...

    Abstract Social modification of drug reward in general and amphetamine reward in particular is reviewed here. The simplest explanation for the social facilitation of drug reward in the conditioned place preference paradigm is the summation of drug and social reinforcing effects. However, experimental reports have shown that sharing a common pharmacological experience, simultaneously or successively, plays a crucial role in the social facilitation of methamphetamine reward. Therefore, social facilitation cannot be the simple summation of drug and social reinforcing effects. Other social factors, such as the dominant/subordinate relation, social defeat, and isolation, also affect drug reward. Because these factors induce stress, they may modulate drug effects through stress-induced mechanisms. However, it is unclear whether these mechanisms are social experience-specific or underlie all aversive experiences producing stress. Mutual modification of social and drug rewards is also discussed.
    MeSH term(s) Amphetamines/pharmacology ; Animals ; Behavior, Animal/drug effects ; Behavior, Animal/physiology ; Central Nervous System Stimulants/pharmacology ; Reinforcement (Psychology) ; Social Behavior ; Stress, Psychological/physiopathology
    Chemical Substances Amphetamines ; Central Nervous System Stimulants
    Language English
    Publishing date 2018-08-17
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 209876-3
    ISSN 2162-5514 ; 0074-7742
    ISSN (online) 2162-5514
    ISSN 0074-7742
    DOI 10.1016/bs.irn.2018.07.023
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Comparative study of Japanese eel and yellowfin goby brains using a new brain size index

    Watanabe, Shigeru / Kono, Masanori

    Fish Sci. 2022 Nov., v. 88, no. 6 p.733-740

    2022  

    Abstract: We propose a simple index of brain volume (D*L index), calculated using two-dimensional photographs of the brain, captured from the dorsal and lateral views. Here, D and L represent the dorsal and lateral brain areas in the images, respectively. Two ... ...

    Abstract We propose a simple index of brain volume (D*L index), calculated using two-dimensional photographs of the brain, captured from the dorsal and lateral views. Here, D and L represent the dorsal and lateral brain areas in the images, respectively. Two distantly related species were assessed. The D*L indices of 11 Japanese eels, Anguilla japonica and 11 yellowfin gobies, Acanthogobius flavimanus were calculated. High correlation coefficients of D*L index with brain weights were obtained from both species, suggesting the validity and reliability of the index. The relative profiles of the olfactory bulb, telencephalon, optic tectum, and cerebellum were calculated using this index. Eels had a larger olfactory bulb and telencephalon, whereas gobies had a larger optic tectum. Principal component analysis showed two separate clusters for eels and gobies. Published images of two Anguilliformes species and four Gobiidae species were used to test the D*L index. Principal component analysis showed separate clusters for Anguilliformes and Gobiidae species. The D*L index is a suitable tool for data collection because it is simple, low-cost, and has reliability and validity.
    Keywords Acanthogobius flavimanus ; Anguilla japonica ; cerebellum ; comparative study ; data collection ; fish ; olfactory bulb ; optic tectum ; principal component analysis
    Language English
    Dates of publication 2022-11
    Size p. 733-740.
    Publishing place Springer Japan
    Document type Article ; Online
    ZDB-ID 1192654-5
    ISSN 1444-2906 ; 0919-9268
    ISSN (online) 1444-2906
    ISSN 0919-9268
    DOI 10.1007/s12562-022-01635-9
    Database NAL-Catalogue (AGRICOLA)

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    In stock of ZB MED Bonn / Germany

    Z 5906: Show issues

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