Tjard de Cock Buning

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Boas, pythons and pit vipers are known to use the heat radiated by warmblooded animals in order to hunt them. However, until now no comparative study to determine at what range these remarkable sense organs operate has been attempted. The results from a comparative electrophysiological study on central infrared sensitive neurons in the tecta mesencephali(More)
Afferent impulses from single-fiber preparations of the trigeminal nerve in Agkistrodon blomhoffi brevicauduswere recorded during steady and dynamic temperature stimulation of the sensory membrane in the facial pit. The thermoreceptors of the pit showed high sensitivity to the rate of change in receptor temperature. Changing the heat capacity of the pit(More)
The discussion about the ethics of xenotransplantation seems to focus upon the benefits for individual patients and the potential risks for human society, in general, to contract a newly emerging retrovirus. In these risk-benefit considerations, the moral concern for the research animals involved appears to be absent. This is remarkable, because the(More)
The infrared receptor neurons of Python reticulatuspit organs were all found to have bimodal sensitivity, responding to both infrared and touch stimuli with fairly rapid adaptation. The majority (22 of 29 neurons) had no background discharges at any temperature between 20 and 33°C. The receptive areas were 150–250 µm in diameter and identical for both(More)
Background: Social accountability (SA) comprises a set of mechanisms aiming to, on the one hand, enable users to raise their concerns about the health services provided to them (voice), and to hold health providers (HPs) accountable for actions and decisions related to the health service provision. On the other hand, they aim to facilitate HPs to take into(More)
Every ethical review process presupposes a set of ethical criteria, proper procedures and a consistent legal framework. The Netherlands became unique in 1996, by the decision of the Parliament to start a national ethical review procedure regarding the ethical aspects of genetic modification of animals (Animal and Biotechnology Decree). Due to the policy of(More)
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