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Thermal stimulation of electrical activity of single units of the preoptic region
Abstract
Single unit activity has been recorded in the hypothalamus and preoptic region of cats anesthetized with urethan during local hypothalamic heating and cooling. Heating was accomplished by radio frequency current (3.7 megacycles/sec) and heating and cooling by circulating warm and cold water through small steel thermodes placed 4–6 mm on each side of the midline. Local tissue temperature was recorded by thermocouples and by thermistors. It was observed from a study of about 1,000 neurons that a) about one neuron in five increased its rate of spontaneous discharge with increase in local temperature from 32 to 41 C (Q 10 = 5–15); b) 80% of the units did not respond to temperature change by changing their spontaneous discharge rate in the 34–41 C temperature range; c) thermally sensitive neurons were found only in the midline region immediately rostroventral to the anterior commissure; d) no units were found for which the discharge frequency increased by decreasing the local temperature.
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Citations
Cited by
Central neural pathways for thermoregulation
Morrison, S. (2011) · Frontiers in Bioscience · doi:10.2741/3677 · Cited by 655
Role of the preoptic-anterior hypothalamus in thermoregulation and fever
Boulant, J. A. (2000) · Clinical Infectious Diseases · doi:10.1086/317521 · Cited by 562
Central circuitries for body temperature regulation and fever
Nakamura, K. (2011) · American Journal of Physiology-Regulatory, Integrative and Comparative Physiology · doi:10.1152/ajpregu.00109.2011 · Cited by 543
Conti, B. (2004) · Frontiers in Bioscience · doi:10.2741/1341 · Cited by 408
Temperature regulation: The spinal cord as a site of extrahypothalamic thermoregulatory functions
Simon, E. (2005) · Reviews of Physiology, Biochemistry and Pharmacology · doi:10.1007/bfb0027660 · Cited by 280
Metadata
- Authors
- Nakayama, T., Hammel, H. T., Hardy, J. D., & Eisenman, J. S.
- Venue
- American Journal of Physiology-Legacy Content
- Publisher
- American Physiological Society
- Published
- 1963-06-01
- Volume
- 204
- Issue
- 6
- Pages
- 1122-1126
- ISSN
- 0002-9513 (ISSN-L)
- OpenAlex
- W2596009609
- Cited by
- 260
- References
- 0
- FWCI
- 11.10
- Type
- journal article
- Language
- en
- Open access
- closed
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- Nakayama, T., Hammel, H. T., Hardy, J. D., & Eisenman, J. S. (1963). Thermal stimulation of electrical activity of single units of the preoptic region. American Journal of Physiology-Legacy Content. https://doi.org/10.1152/ajplegacy.1963.204.6.1122
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