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Response plasticity of neurons in auditory cortex of the rhesus monkey (1977)

Pfingst, B. E. ; O'Connor, T. A. ; Miller, J. M.

Springer

Experimental brain research 29 (1977), S. 393-404

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ISSN: 1432-1106

Keywords: Auditory cortex ; Single units ; Rhesus monkey ; Behavioral state ; Anesthetic state

Source: Springer Online Journal Archives 1860-2000

Topics: Medicine

Notes: Summary Auditory-evoked responses in single neurons from rhesus monkey auditory cortex were measured under four relatively well defined behavioral and physiological conditions: (1) monkey awake and performing a simple auditory reaction time task; (2) monkey awake but not performing a task (State A); (3) monkey in a drowsy or Stage 1 sleep state (State B); and (4) monkey anesthetized with a short-acting nonbarbiturate anesthetic. For most units studied the response evoked by the auditory stimulus was greater in the performance condition than in the nonperformance condition. Similarly, evoked activity was usually greater in State A than in State B. Finally, evoked responses under anesthesia were usually weaker than those obtained in the unanesthetized animal. Some exceptions were noted in each case. Differences in response patterns and in rate versus intensity functions of neurons were also found to be associated with the behavioral and physiological state of the preparation. No significant changes in unit spontaneous activity associated with changes in behavioral or physiological condition were observed.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00236178

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An apparatus for the culture of algae under controlled conditions (1959)

Fogg, G. E. ; Smith, W. E. E. ; Miller, J. D. A.

New York, NY [u.a.] : Wiley-Blackwell

Journal of Biochemical and Microbiological Technology and Engineering 1 (1959), S. 59-76

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ISSN: 0368-1467

Keywords: Chemistry ; Biochemistry and Biotechnology

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology

Notes: An apparatus is described in which large numbers of algal cultures can be maintained under the following conditions: (1) Constant temperature within the range 5 to 70°C, four different temperatures being maintained simultaneously; (2) uniform illumination at intensities up to 20,000 metre-candles; (3) continuous shaking at variable speed; and (4) aeration under aseptic conditions with mixtures of up to four different gases in any desired proportions.Among other features, thermoregulator heads, flow-meters and heaters for sterile filters, of improved design are described.To illustrate the use of the apparatus, data showing the effects of light intensity and temperature on the growth of Monodus subterraneus are presented.

Additional Material: 8 Ill.