**8. References**


In this study we did not examine the effect of dopaminergic agents on the SCR system parameters what could be done in the future research. Further work could be also aimed to determine normative values of the hidden-input measures and the SCR system's parameters in larger samples of healthy individuals and to compare them with different populations of

In this contribution we introduced a methodological approach which appears promising for a possibility of establishing the bridge between the neurochemistry of the brain monoaminergic systems and psychophysiological measures such as skin conductance response. The SCR system in this perspective is viewed as a linear neurochemical oscillator suitable for mathematical modeling and estimation of the inherent control process. Through mathematical modeling of the SCR process two kinds of metrics emerged. One of them refers to the features of the hidden neural input for the SCR system generated in the amigdala-hippocamus interaction when an individual is encountered with an unexpected and significant stimulus. The other metrics specifies the regulatory (control system) aspect

We presented the results of the first pharmacological intervention study aimed to reveal the neurochemical meaning of the parameters in the model of the SCR process. Future work on this issue could refine the method of the psychophysiological probing of the brain monoaminergic signaling systems and render it clinically applicable in: (1) the neurochemical characterization of an individual with a mental disorder and (2) a more

The author expresses great gratitude to Mr. Nenad Jeremić ("Blink N" Programming Agency) for the collaboration in development of the software tool for the automated analysis of the SCR signal. The publishing of the text was financially supported by Actavis–

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**6. Conclusion** 

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**7. Acknowledgment** 

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**5** 

*Xalapa, Veracruz,* 

*Xalapa, Veracruz,* 

*Mexico* 

*Universidad Veracruzana,* 

**Fatty Acids and Emotional Behavior** 

*1Unidad Periférica Xalapa, Instituto de Investigaciones Biomédicas,* 

Fatty acids are widely distributed in nature. In addition to being found in plants and seeds, these organic compounds are present in other organisms, from unicellular protists to mammals, including humans. The anabolic and catabolic pathways of fatty acids have been identified. They have a well-known function as energy sources in metabolic processes and constitute a fundamental part of cellular membrane structures. Long-chain fatty acids also play a role in inflammatory process. Fatty acids exert their actions by modifying the fluidity of membranes, exerting marked actions on membrane ionic channels, and leading to a reduction in the excitability of cardiac myocytes, thus prompting interest in the study of fatty acids as protectors of cardiac function. Fatty acids exert similar actions on membrane neurons and the modulation of neurotransmission. The role of fatty acids in several psychiatric and neurologic conditions is a topic of current research. Fatty acid deficiency appears to be related to alterations in development, but the results from supplementary diet studies are far from conclusive. Interestingly, fatty acids are present in amniotic fluid, colostrum, and maternal milk in at least two mammalian species (i.e., pigs and humans) and according to both anecdotal and experimental reports appear to produce anxiolytic effects. Additionally, fatty acids exert effects when applied by the olfactory route. Odorant carrier proteins to olfactory receptors are present in maternal fluids and nasal mucosa epithelia. In newborns, fatty acids may also act as olfactory cues for feeding source seeking after

exposure during prenatal life, which may constitute an additional function.

Lipids are organic compounds that are insoluble in water but soluble in nonpolar solvents, such as ether and chloroform. Some of these lipids naturally occur in the marine food chain. From an evolutionary ecological perspective, their presence in dinoflagelates, teleosts, amphibians, reptiles, birds, mammalians, and humans is important (Crawford et al., 2009).

**1. Introduction** 

**2. Overview** 

*2 Laboratorio de Neurofarmacología, Instituto de Neuroetología,* 

Carlos M. Contreras1,2, Ana G. Gutiérrez-García2,3

and Diana Idania Vásquez-Hernández2

 *Universidad Nacional, Autónoma de México,* 

*3 Facultad de Psicología,Universidad Veracruzana,* 

