Where did the practice of astrology originate. Did it evolve in one part of the world and then become adopted by other civilizations. When you study the ancient civilizations in the Middle East, Central America and in Asia, there are remarkable similarities in how they adapted their lives to be in harmony with the rhythms of earth and the cosmos. Consider that there are pyramids in Mayan and Aztec cultures, as well as Egyptian ones.

And that many pyramids are constructed around and point to key events in the solar system, such as equinoxes and solstices. Similarly, astrology is thought to have developed independently in Babylon and Central America. The astrology systems in India and China most likely were derived from those in Babylon. Its curious that many fundamentalist religions reject the principles of astrology, because it was, in fact, an integral component of the religions of Babylon. It was part of the calling of priests in Babylon to predict the future and part of their methodology for doing so was to interpret events in the sky.

Nothing was considered pure chance and any natural occurrence, no matter how mundane or mysterious, could be an omen of either good fortune or bad. The part of Mesopotamia that is now Iraq once comprised Babylonia in the South and Assyria in the North. Before Alexander the Great conquered the area in 330 BC, the Assyrians were a military and administrative power, and Babylon was the center of culture. The underlying belief system in both cultures was that there was a spiritual force behind every act of nature. Heaven and Earth were complementary systems, with neither one having dominion over the other. But by the 4th century BCE, this belief system was influenced by the Greek view that the heavens, and its resident gods, determined events on earth.

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File Toni Frissell in Europe ppmsca19005u.jpg looking at her camera|thumb]] Curiosity (from Latin curiosus " areful, Diligence|diligent]], urious," akin to cura " care") is a quality related to inquisitive thinking such as [[exploration]], investigation, and [[learning]], evident by observation in [[human]] and many [[animal]] species.{{Cite journal| author = Berlyne DE. | title = A theory of human curiosity. | journal = Br J Psychol. | volume = 45 | issue = 3 | pages = 180–91 | year = 1954 | pmid = 13190171 }}{{Cite journal| author = Berlyne DE. | title = The arousal and satiation of perceptual curiosity in the rat. | journal = J Comp Physiol Psychol. | volume = 48 | issue = 4 | pages = 238–46 | year = 1955 | pmid = 13252149 }} The term can also be used to denote the behavior itself being caused by the emotion of curiosity. As this emotion represents a thirst for knowledge, curiosity is a major driving force behind scientific research and other disciplines of human study. ==Causes== [[File:Curiosity..... what are they reading.jpg|thumb|right|200px|Children peer over shoulders to see what their friends are reading.]] Although many living beings have an innate capability of curiosity, it should not be categorized as an [[instinct]] because it is not a [[fixed action pattern]]; rather it is an innate basic [[emotion]] because, while curiosity can be expressed in many ways, the expression of an instinct is typically more fixed and less flexible. Curiosity is common to [[human]] beings at all ages from [[infancy]]{{Cite journal| author = Ofer G, Durban J. | title = Curiosity: reflections on its nature and functions. | journal = Am J Psychother. | volume = 53 | issue = 1 | pages = 35–51 | year = 1999 | pmid = 10207585 }} through [[adulthood]],{{Cite journal| author = Berlyne DE. | title = A theory of human curiosity. | journal = Br J Psychol. | volume = 45 | issue = 3 | pages = 180–91 | year = 1954 | pmid = 13190171 }} and is easy to observe in many other [[animal]] species. These include [[ape]]s, [[cat]]s, and [[rodent]]s.{{Cite journal| author = Berlyne DE. | title = The arousal and satiation of perceptual curiosity in the rat. | journal = J Comp Physiol Psychol. | volume = 48 | issue = 4 | pages = 238–46 | year = 1955 | pmid = 13252149 }} ==Brain== Although the phenomenon of curiosity is widely regarded, its neural correlates still remain relatively unknown. However, recent studies have provided insight into the neurological mechanisms that may be associated with curiosity, such as [[learning]], [[memory]], and [[motivation]]. Such research aims to transition the study of curiosity from a speculative realm to one of more scientific credibility. Various theories have been proposed in order to elucidate the mechanism of curiosity: === Curiosity-drive model === The curiosity-drive model states that experiences that are novel and complex create a sensation of uncertainty in the brain, a sensation perceived to be unpleasant. Curiosity acts as a means in which to dispel this uncertainty. By exhibiting curious and exploratory behavior, organisms are able to learn more about the novel stimulus and thus reduce the state of uncertainty in the brain. However, this model does not account for the observation that organisms display curiosity even in the absence of exciting and new stimuli.Litman, J. A. (2005). Curiosity and the pleasures of learning: Wanting and liking new information. Cognition & Emotion, 19(6), 793-814. doi:10.1080/02699930541000101 This type of exploratory behavior is common in many species. Take the example of a human toddler who, if bored in his current situation devoid of arousing stimuli, will walk about until something interesting is found. The observation of curiosity even in the absence of novel stimuli pinpoints one of the major shortcomings in the curiosity-drive model. === Optimal arousal model === The optimal-arousal model of curiosity posits that the brain aims to maintain an optimal level of arousal. If the stimulus is too intensely arousing, a “back-away” type behavior is engaged. In contrast, if the environment is boring and lacks exciting stimuli, exploratory behavior will be engaged until something optimally arousing is encountered. In essence, the brain is searching for the perfect balance of arousal states. This model aptly addresses the observation that organisms display curiosity even in the absence of novel and exciting stimuli. While this theory addresses some discrepancies in the curiosity-drive theory, it is not without fault. If there is an ideal state of curiosity that should be maintained in the brain, then gaining new knowledge to eliminate that state of curiosity would be considered counter-productive. === Integration of reward pathway === Taking into account the shortcomings of both curiosity-drive and optimal-arousal models, there have been attempts to integrate the neurological aspects of reward, wanting, and liking into a more comprehensive theory for curiosity, one that is explained by biological processes. The act of wanting new information involves mesolimbic [[dopamine]] activation, which assigns an intrinsic value to that new information that the brain then interprets as a reward. This is the neurobiology that motivates exploratory behavior. In addition, [[opioid]] activity in the nucleus accumbens evaluates stimuli and attaches an immediate value to the novel object, a sensation known as ‘liking’. This liking stimulates pleasure. The chemical processes of both wanting and liking play a role in activating the reward system of the brain, and perhaps in curious tendencies as well. === Neurological aspects === Due to the complexity of the subject, focusing on specific neural processes within curiosity can help in better understanding the phenomenon of curiosity as a whole. The following neural aspects can be thought of as essential sub-functions of curiosity: ==== Attention==== [[Attention]] is the cognitive process by which one can selectively focus and concentrate on particular stimuli in the surrounding environment. There may be many stimuli in the surrounding area, but as there are limited cognitive and sensory resources, attention allows the brain to better focus on what it perceives to be the most important or relevant of these stimuli. Scientists can measure the amount of attention an individual devotes to a stimulus by tracking eye movements. Organisms focus their eyes on stimuli that are particularly stimulating or engaging; the more attention a stimulus garners, the more frequent the eye will be directed towards that stimulus. Normal individuals will look at new stimuli at least two to three times more often than familiar or repetitive stimuli. Exciting or novel stimuli demand more attention than stimuli perceived as boring. ====Motivation and reward==== [[File:Dopamine Pathways.png|thumb|Dopamine Pathway in the Brain]] The drive to learn new information or perform some action is often initiated by the anticipation of [[Reward system|reward]] (an [[Emotion|emotional]] [[Sensation (psychology)|sensation]] of relief and [[happiness]]). In this way, the concepts of [[motivation]] and [[Reward system|reward]] are intrinsically tied to the phenomenon of curiosity. Reward can be defined as an effect of some action that positively reinforces that behavior. Feelings of pleasure and satisfaction are often associated with reward. There are many areas in the brain used to process reward, such as the [[nucleus accumbens]], the [[substantia nigra]], the [[striata]] and the [[ventral tegmental area]] (VTA). These structures together form the reward pathway. There are many prominent neurotransmitters released in the activation of the reward pathway, the most relevant of which include [[dopamine]], [[serotonin]] and opioid-derived chemicals. Recent studies have shown that dopamine may be important for the process of curiosity, most particularly in assigning and retaining reward values for information gained. Midbrain dopamine neurons in monkeys are activated when determining the value of stimuli. There is some level of dopamine neuron activation when the reward of a familiar stimulus is already known, but perhaps more interestingly, there is a higher dopamine release when the reward is unknown and the stimulus is novel. Additionally, reward values were better retained (a function of both reward and memory) in monkeys that exhibited more curious behavior.C.D., F. (2011). Cognitive, Behavioral, and Systems Neuroscience: Transient activation of midbrain dopamine neurons by reward risk. Neuroscience, 197162-171. doi:10.1016/j.neuroscience.2011.09.037 Such studies further implicate the reward pathway in curious behavior. ====Memory and learning==== [[Memory]] is the process by which the brain can store and access information. While there is still much to be understood about both memory and curiosity, the two neurological processes seemed to be linked. Curiosity can be defined as the urge to seek out novel stimuli. In order to determine if the stimulus is novel, an individual must remember if he has encountered the stimulus before or not. Thus, memory plays an integral role in dictating the level of novelty, and as such the level of curiosity. While one side of the coin dictates that memory affects curiosity, we can also flip the coin to project the converse relationship: curiosity affects memory. As previously mentioned, stimuli that are novel tend to capture more of our attention. Additionally, novel stimuli usually have a reward value associated with them, the anticipated reward of what learning that new information may bring. With stronger associations and more attention devoted to a stimulus, it is probable that the memory formed from that stimulus will be longer lasting and easier to recall, both of which facilitate better [[learning]]. === Important structures === [[File:Constudoverbrain.gif|thumb|Important brain structures for curiosity:Hippocampus, caudate nucleus, amygdala]] While the neuroscience concerning curiosity is still relatively unknown, certain neuronal structures have been implicated in various aspects of curiosity: * nterior cortices: Studies have observed through [[fMRI]] that both the [[anterior cingulate cortex]] (ACC) and the [[anterior insular cortex]] (AIC) were activated in the induction of perceptual curiosity.Jepma, M., Verdonschot, R., van Steenbergen, H., Rombouts, S., & Nieuwenhuis, S. (2012). Neural mechanisms underlying the induction and relief of perceptual curiosity. Frontiers In Behavioral Neuroscience, 6 These regions correspond to both conflict and arousal, and as such seem to reinforce certain explanatory models of curiosity that include these principles. * triatum: The [[striatum]] plays a role in attention and reward anticipation, both of which are important in the induction of curiosity. * ippocampus and dentate gyrus The [[hippocampus]] is important in memory formation and recall and therefore instrumental in determining the novelty of various stimuli. In addition, the [[dentate gyrus]] subregion of the hippocampus has been shown to be critical for regulating the spontaneous exploration of safe, novel spaces in mice.{{Cite journal| author = Saab BJ, Georgiou J, Nath A, Lee FJ, Wang M, Michalon A, Liu F, Mansuy IM, Roder JC. | title = NCS-1 in the dentate gyrus promotes exploration, synaptic plasticity, and rapid acquisition of spatial memory. | journal = Neuron | volume = 63 | issue = 5 | pages = 643–56 | year = 2009 | pmid = 19755107 | doi = 10.1038/nature09817 }} Since neither genetic nor molecular manipulation of the dentate gyrus in this study affected exploration of fearful or familiar spaces, it has been suggested that the dentate is somehow involved in generating or gating the underlying motivation to explore for the purpose of learning,{{Cite journal| author = Saab BJ, Georgiou J, Nath A, Lee FJ, Wang M, Michalon A, Liu F, Mansuy IM, Roder JC. | title = NCS-1 in the dentate gyrus promotes exploration, synaptic plasticity, and rapid acquisition of spatial memory. | journal = Neuron | volume = 63 | issue = 5 | pages = 643–56 | year = 2009 | pmid = 19755107 | doi = 10.1016/j.neuron.2009.08.014 }}{{Cite journal| author = McDermott M. | title = Researchers discover the first-ever link between intelligence and curiosity. | journal = PhyzOrg | year = 2009 | date = Sept. 19th, 2009}} a mental state in animals that may be akin to human curiosity.{{Cite journal| author = Berlyne DE. | title = The arousal and satiation of perceptual curiosity in the rat. | journal = J Comp Physiol Psychol. | volume = 48 | issue = 4 | pages = 238–46 | year = 1955 | pmid = 13252149 }} A prominent role for the dentate gyrus in exploration has since been independently demonstrated by other researchers.{{Cite journal| author = Sahay A, Scobie KN, Hill AS, OCarroll CM, Kheirbek MA, Burghardt NS, Fenton AA, Dranovsky A, Hen R. | title = Increasing adult hippocampal neurogenesis is sufficient to improve pattern separation. | journal = Nature | volume = 472 | issue = 7344 | pages = 466-70 | year = 2011 | pmid = 21460835 | doi = 10.1016/j.neuron.2009.08.014 }}{{Cite journal| author = Leussis MP, Berry-Scott EM, Saito M, Jhuang H, de Haan G, Alkan O, Luce CJ, Madison JM, Sklar P, Serre T, Root DE, Petryshen TL. | title = The ANK3 Bipolar Disorder Gene Regulates Psychiatric-Related Behaviors That Are Modulated by Lithium and Stress. | journal = Biological Psychiatry | volume = 73 | issue = 7 | pages = 683–90 | year = 2013 | pmid = 23237312 | doi = 10.1016/j.biopsych.2012.10.016 }} * Parahippocampal gyrus: The [[parahippocampal gyrus]] (PHG) is the area of grey matter that surrounds the hippocampus and has recently been implicated in the process of curiosity. In one study, subjects were asked trivia questions and brain region activity was measured through fMRI. When subjects learned their answers to trivia questions were wrong, there was markedly increased activity in the PHG.Min Jeong, K., Ming, H., Krajbich, I. M., Loewenstein, G., McClure, S. M., Wang, J., & Camerer, C. F. (2009). The Wick in the Candle of Learning: Epistemic Curiosity Activates Reward Circuitry and Enhances Memory. Psychological Science (Wiley-Blackwell), 20(8), 963-973. doi:10.1111/j.1467-9280.2009.02402.x Even if there was not a high level of curiosity when the question was initially asked, levels of curiosity were raised when the participant learned that his answer was wrong. This finding suggests that the PHG may be involved in the potentiation or amplification of curiosity more so than the primary induction of curiosity. * mygdala: The [[amygdala]] consists of a pair of almond-shaped structures located deep within the medial temporal lobe. The amygdala is often associated with emotional processing, particularly for the emotion of fear, but is also important in memory. Certain studies suggest that amygdala is important is processing emotional reactions towards novel or unexpected stimuli and the induction of exploratory behavior.MONTGOMERY, K. (1955). THE RELATION BETWEEN FEAR INDUCED BY NOVEL STIMULATION AND EXPLORATORY BEHAVIOR. Journal Of Comparative And Physiological Psychology, 48(4), 254-260. However, much still needs to be explored to understand the connection between curiosity levels and the amygdala. * nterior pituitary: The [[anterior pituitary]] regulates the adrenal cortex, which releases [[cortisol]], among other regulatory chemicals. Although mostly known for its role in stress, cortisol may also be associated with curious or exploratory behavior. Studies have shown that monkeys that have been administered small amounts of cortisol in early adolescence will display a higher degree of novelty seeking behavior later in life. However, the dose and frequency of cortisol administration was important. Monkeys subjected to normal levels of cortisol retained an average level of exploratory behavior, while those where were subjected to too much cortisol actually had a decrease in exploratory behavior. Karen J., P., Kimberly L., R., Christine L., B., Alan F., S., Steven E., L., & David M., L. (2007). Early life stress and novelty seeking behavior in adolescent monkeys. Psychoneuroendocrinology, 32785-792. doi:10.1016/j.psyneuen.2007.05.008 These findings may support in part the optimal arousal theory, in which a small amount of stress encourages curious behavior, while too much stress initiates a "back away" response. *Nucleus accumbens: The nucleus accumbens is a formation of neurons that makes up the ventral striatum and is important in reward pathway activation. As previously mentioned, the reward pathway is an integral part in the induction of curiosity. The release of dopamine in animal models has been measured in investigating neurochemical response to novel or exciting stimuli. Dopamine transients, an indicator of dopamine release, were measured throughout life-stages of rats, as well as when rats were presented with various stimuli. Scientists observed more dopamine transients in early adolescent rats and in rats presented with novel or unexpected stimuli.D.L., R., D.L., Z., K.J., S., & L.P., S. (2011). Cognitive, Behavioral, and Systems Neuroscience: Fast dopamine release events in the nucleus accumbens of early adolescent rats. Neuroscience, 176296-307. These findings suggest that dopamine release in reward anticipation and pathway activation is tied to curiosity in both childhood and adult stages. The fast dopamine release observed during adolescence is particularly important, as curiosity and exploratory behavior are the largest facilitators of learning during early formative years. *Precuneus: The precuneus is located in the medial area of the superior parietal cortex and is involved in episodic memory and visuospatial processing. In animal models, the amount of grey matter in the precuneus was measured in normal monkeys and monkeys considered to be highly curious and exploratory. Results found that the more curious monkeys had a significantly higher density of grey matter in the precuneus region,Kimberley A., P., Francys, S., & Chet C., S. (2012). Curious monkeys have increased gray matter density in the precuneus. Neuroscience Letters, 518172-175. doi:10.1016/j.neulet.2012.05.004 suggesting that the precuneus density has an influence on levels of curiosity. *Caudate nucleus: Each hemisphere of the brain contains one caudate nucleus a small C-shaped region that is highly responsive to dopamine. The caudate nucleus is another component in the reward pathway. The role of the caudate nucleus in curiosity was investigated by asking subjects trivia questions. fMRI was used to measure brain activity during the question period. Scientists observed that the caudate "lit up" when the participant was presented with trivia questions, indicating the anticipation of reward. In this case, the reward was the new information gained from learning the answer to the question. The results suggest that the caudate nucleus is relevant in the induction of curiosity.

Impact from disease

File Alzheimer's disease brain comparison.jpg Different neurodegenerative disease can affect curiosity levels. Alzheimer's disease (AD) is a neurodegenerative disease that affects memory capability. Curiosity for novel stimuli might also be used as a potential predictor for the disease.Stuart, Z., Cecelia, M., Allan, L., & James, L. (2011). Predicting the onset of Alzheimers disease with a behavioral task. Alzheimers & Dementia: The Journal Of The Alzheimers Association, 7(Supplement), S549. doi:10.1016/j.jalz.2011.05.1549

Morbid curiosity

File Accident Nehoda Uherský Brod.jpg A morbid curiosity exemplifies addictive curiosity. It has as its object death violence or any other event that may cause harm physically or emotionally, the addictive emotion being explainable by meta-emotions exercising pressure on the spontaneous curiosity itself.According to Aristotle in his Poetics (Aristotle) we even "enjoy contemplating the most precise images of things whose sight is painful to us". (This aspect of our nature, often referred to as the "Car Crash Syndrome" or "Trainwreck Syndrome", accounts for the Rubbernecking for passers-by.)

See also

* Emotion * Interest (emotion) * Play (activity) * Broaden-and-build

References

Further reading

* Edelman, Susan (Spring 1997). "http://www.csun.edu/~vcpsy00h/students/explore.htm Curiosity and Exploration]".

External links

Category Attention-deficit hyperactivity disorder Category Creativity Category Emotions Category Interest (psychology) Category Motivation Category Positive psychology Category Problem solving Category Psychological attitude Category Virtue