INTRODUCTION: Since 1983 inexplicably large numbers of dead...
INTRODUCTION: Since 1983 inexplicably large numbers of dead and dying common l oons (Gavia immer) have been found along Floridas Gulf Coast. Under threat fr om acid rain, lake pollution, and human encroachment, their numbers are declini ng elsewhere as well. Lake acidification has resulted in fewer fish, the birds principal f ood. More insidiously, it increases the rate at which mercury in ponds is toxi fied, the poisonous methylmercury enters the food chain and is eventually inges ted by the loon. It attacks the birds nervous system, hindering its ability to feed and reproduce. ----- LEGEND: A tiny chick is fed by its parent as they bob on a la ke or pond -- perhaps as a reward for venturing into the water on its own. The adult wears breeding plumage in this extraordinarily charming picture.
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Tags: increases, water, The, pollution, fed, CYCLES, LOONS, picture., LIFE, BREEDING, BIRDS, human, INDEXERS, LEGEND:, COMMON
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Digital Archive Japan / DAJ, Rene Descartes illustration of...
Digital Archive Japan / DAJ, Rene Descartes illustration of the co-ordination of the senses, 1692. A visual stimulus travelling from the eye to the pineal gland, H, stops attention being given to an olfactory stimulus. From Opera Philosophica by Rene Descartes. (Frankfurt-am-Main, 1692). Originally published in his Tractatus de homine. (Paris, 1664).
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Digital Archive Japan / DAJ, Involuntary movement, Descartes idea...
Digital Archive Japan / DAJ, Involuntary movement, Descartes idea of how impulses from the limbs reach the brain, 1692. French philosopher and scientist Rene Descartes (1596-1650) believed all nerves to be hollow. From Descartes Opera Philosophica, 1692.
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Human Neck
Human Neck
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Digital Archive Japan / DAJ, Descartes representation of the...
Digital Archive Japan / DAJ, Descartes representation of the antagonistic eye muscles, 1692. When E is relaxed A is innervated. Rene Decartes (1596-1650) believed that an animal spirit travelling down hollow nerves C and B contracted the muscles and blew them up, and that they relaxed when the spirit was shut off by valves. From Opera Philosophica by Rene Descartes. (Frankfurt-am-Main, 1692). Originally published in his Tractatus de homine. (Paris, 1664).
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An exhibit featuring the nervous system and the brain...
An exhibit featuring the nervous system and the brain captures the attention of a local Bay News 9 new crew during a media opening at MOSI for the upcoming BODIES, The Exhibit, show in South Tampa, FL. on Tuesday, Aug. 9, 2005. (Joseph Garnett, Jr./St. Petersburg Times/WpN) No Tabloids -- Copyright: Joseph Garnett, Jr./St. Petersburg Times/WpN
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Human Brain
Human Brain
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INTRODUCTION: Since 1983 inexplicably large numbers of dead...
INTRODUCTION: Since 1983 inexplicably large numbers of dead and dying common l oons (Gavia immer) have been found along Floridas Gulf Coast. Under threat fr om acid rain, lake pollution, and human encroachment, their numbers are declini ng elsewhere as well. Lake acidification has resulted in fewer fish, the birds principal f ood. More insidiously, it increases the rate at which mercury in ponds is toxi fied, the poisonous methylmercury enters the food chain and is eventually inges ted by the loon. It attacks the birds nervous system, hindering its ability to feed and reproduce. ----- LEGEND: Close view of a mated pair of common loons swimming i n tandem in a lake or pond. The birds are in breeding plumage.
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Dr. Linda LaGasse, Associate Professor, Psychiatry and Human Behaviour...
Dr. Linda LaGasse, Associate Professor, Psychiatry and Human Behaviour at Brown University, Rhode Island, studies and analyzes the acoustics of a babys cry in Providence, MA on Thursday, June 16,2005. She is researching the characteristics of a cry that can indicate problems in a babys nervous system, as well as sudden infant death syndrome (SIDS). In addition, her research cites the importance of how parents react to their squalling offspring. Overall, studies have repeatedly shown that infants at medical risk (like premature babies), and infants who have been exposed to lead or drugs, cry at a higher and more variable frequency than normal, but at lower amplitude, and with short utterances. These types of cry signals point toward a capacity problem in the respiratory system as well as an increased tension and instability of neural control of the vocal tract. -- Copyright: Rick Friedman/WpN
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Digital Archive Japan / DAJ, Descartes (1596-1650) idea of...
Digital Archive Japan / DAJ, Descartes (1596-1650) idea of vision, [1692]. The passage of nervous impulses from the eye to the pineal gland and so to the muscles. From Rene Descartes Opera Philosophica (Tractatus de homine), 1692.
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