Effects of predictable and unpredictable intermittent noise on spatial learning in rats

Prior, Helmut

doi:10.1016/s0166-4328(01)00466-1

Cited by 17 publications

(16 citation statements)

References 33 publications

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“…This suggestion is supported by studies in rats that showed that the predictability of negative events (such as electric shocks) leads to a reduction in gastric ulcers as compared to rats that cannot predict the shock event (Guile 1987). Predictability of negative stimuli such as noise (Prior 2002) or introduction into an unfamiliar cage (Muir and Pfister 1986) has also been shown to result in reduced stress responses and better learning abilities in rats (Muir and Pfister 1986;Orsini et al 2002;Prior 2002). Carlstead (1986) showed a positive effect of predictability of feeding on growth and aggressive behaviour in pigs, while the predictability of a sudden event was shown to lower subsequent emotional responses in sheep (Greiveldinger et al 2007).…”

Section: Mental States and Possible Associated Welfare Indicatorsmentioning

confidence: 87%

Behavioural indicators of welfare in farmed fish

Martins¹,

Galhardo²,

Noble³

et al. 2011

Current Views on Fish Welfare

120

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Behaviour represents a reaction to the environment as fish perceive it and is therefore a key element of fish welfare. This review summarises the main findings on how behavioural changes have been used to assess welfare in farmed fish, using both functional and feeling-based approaches. Changes in foraging behaviour, ventilatory activity, aggression, individual and group swimming behaviour, stereotypic and abnormal behaviour have been linked with acute and chronic stressors in aquaculture and can therefore be regarded as likely indicators of poor welfare. On the contrary, measurements of exploratory behaviour, feed anticipatory activity and rewardrelated operant behaviour are beginning to be considered as indicators of positive emotions and welfare in

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Section: Mental States and Possible Associated Welfare Indicatorsmentioning

confidence: 87%

Behavioural indicators of welfare in farmed fish

Martins¹,

Galhardo²,

Noble³

et al. 2011

Current Views on Fish Welfare

120

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“…In a recent study, Prior highlighted that there was a link between noise exposure and impairment of LM 11) . Some studies focused on this idea with different animal models, and they have documented the acute and chronic neurotoxic effects of noise stress.…”

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confidence: 99%

Recovery of Chronic Noise Exposure Induced Spatial Learning and Memory Deficits in Young Male Sprague‐Dawley Rats

Chen

Yan

Jiang

et al. 2011

Journal of Occupational Health

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Objective: Noise has always been an important environmental public health issue for mankind. Although reports exist on hippocampaldependent spatial learning and memory (LM) impairment due to noise, there are only a few studies that have examined the effects of recovery from noise stress on LM impairments. Therefore, the present study investigated the effects of recovery from chronic noise exposure on LM deficits. Materials and Methods: In this study, the detrimental effects of noise stress on young male rats in the Morris water maze (MWM) were investigated at 1, 10, 20, 30, and 40 days after the discontinuation of chronic noise exposure of 80 dB or 100 dB for 4 h per day, for 30 days. The levels of monoamine neurotransmitters in the hippocampus were also evaluated by HPLC-EC at the end of each behavioral test. Results: Statistical analysis revealed that rats in the noise-treated groups failed to reach the same level of performance as the controls in the MWM. Further, the levels of dopamine (DA), norepinephrine (NE) and 5-hydroxytryptamine (5-HT) were significantly decreased in the hippocampus after noise exposure. However, the reduction in monoamine levels and impaired water maze performance recovered over time, so that by 30th day after cessation of noise exposure the 80 dB group showed no performance difference from the controls, and by 40th day, the 100 dB group also showed no performance difference from the control. Conclusion:Our findings suggest that noise impaired LM in young male rats and reduced monoamine neurotransmitters in the hippocampus. However, the noise-induced water maze deficits recovered over time, and the concurrent restoration of hippocampal monoamine neurotransmitter levels suggest that they are involved in LM impairments. (J Occup Health 2011; 53: 157-163)

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“…Despite the inconsistent physiological responses of various studies, it is apparent that animals prefer predictable negative events over unpredictable ones (Bassett & Buchanan-Smith, 2007). For example, in rats different predictable stressors alleviate stress responses and promote place preferences and spatial learning (Orsini et al, 2002;Prior, 2002). Fish also seem to be sensitive to this psychological variable.…”

Section: Stimuli-related Modulators: Predictability and Social Supportmentioning

confidence: 99%

<b>Psychological Stress and Welfare in Fish</b>

Galhardo¹,

Oliveira²

2009

Annu Rev Biomed Sci

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Galhardo L, Oliveira RF. Psychological Stress and Welfare in Fish. Annu Rev Biomed Sci 2009;11:1-20. The ability to respond to stress is vital to the survival of any living organism, though sustained reactions can become detrimental to the health and welfare of animals. Stress responses of vertebrates are known through several studies in their physiological, behavioural and psychological components, under acute and chronic contexts. In fish, the physiological and behavioural aspects of stress are considerably well known phenomena and show striking similarities to those of other vertebrates. However, the psychological component is not well known. Some authors deny mental experiences to fish on the basis of their lack of neocortex. Nevertheless, recent studies have shown neuroendocrine, cognitive and emotional processes in fish that are not only equivalent to other vertebrates, but also allow inferring some forms of mental representation. The integration of psychological elements in fish stress physiology is insufficiently studied, but, as discussed in this article, there is already indirect evidence to admit that some form of stimuli appraisal can take place in fish. This fact has profound implications on the regulation of the stress response, as well as on fish welfare and its management.

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Effects of predictable and unpredictable intermittent noise on spatial learning in rats

Cited by 17 publications

References 33 publications

Behavioural indicators of welfare in farmed fish

Behavioural indicators of welfare in farmed fish

Recovery of Chronic Noise Exposure Induced Spatial Learning and Memory Deficits in Young Male Sprague‐Dawley Rats

<b>Psychological Stress and Welfare in Fish</b>

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