Common Scents

Ecological validity vs evolutionary theory

Genetic code

Functional characterisation of a SNP in the ABCC11 allele—Effects on axillary skin metabolism, odour generation and associated behaviours Excerpt: …the fact that a single SNP plays such a large role in governing this specific aspect of human behaviour is quite…
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Science fiction, not theories, predicts facts

The past is not the key to the present

Electric fields affect wing movement, leading to agitation and changes in brain chemistry Excerpt: The effect on the wings being moved seems to agitate the flies, as revealed by changes in their brain chemistry. Flies exposed to an electric field…
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“Evolution” of two sexes?

social interaction and brain

Selection for mitochondrial quality drives the evolution of two sexes with germline Topics included (among others): CORRELATION BETWEEN ANIMAL DEVELOPMENT AND MITOCHONDRIAL EVOLUTION THE MODEL: SIMULATION, MATHS TOO COMPLICATED TO SOLVE Mt VARIATION BETWEEN GAMETES MAKES SOMATIC GAMETOGENESIS ADVANTAGEOUS IN…
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Finding it and Perfuming the Mind

human-brain

Microbes Effect on the Brain Excerpt: In flies with a particular microbe, they only want to mate with others who have that microbe. This occurs because of a smell from the microbe. In groups of hyenas, groups identify their social…
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Food odors and chemosignals in body odor

social interaction and brain

A Sniff of Happiness Excerpt: We observed that exposure to body odor collected from senders of chemosignals in a happy state induced a facial expression and perceptual-processing style indicative of happiness in the receivers of those signals. Our findings suggest…
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Ending twenty years of debate?

ISHE 2013 Poster photo

The smelling of Hedione results in sex-differentiated human brain activity Excerpt: “Hedione exhibited significantly enhanced activation in limbic areas (amygdala, hippocampus) and elicited a sex-differentiated response in a hypothalamic region that is associated with hormonal release.” Reported as: Delicate magnolia…
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Do phenotypes evolve?

In my model, ecological variation leads to nutrient-dependent ecological adaptations manifested in the morphological and behavioral phenotypes of species from microbes to man. Conserved molecular mechanisms lead from the epigenetic landscape to the physical landscape of DNA in the organized…
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