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Fear in humans can occur in response to a present stimulus or anticipation of a future threat. Fear is involved in some mental disorders, particularly anxiety disorders. In humans and other animals, fear is modulated by cognition and learning. Thus, fear is judged as rational and appropriate, or irrational and inappropriate.
The English suffixes -phobia, -phobic, -phobe (from Greek φόβος phobos, "fear") occur in technical usage in psychiatry to construct words that describe irrational, abnormal, unwarranted, persistent, or disabling fear as a mental disorder (e.g. agoraphobia), in chemistry to describe chemical aversions (e.g. hydrophobic), in biology to describe organisms that dislike certain conditions (e.g ...
In fear conditioning, the main circuits that are involved are the sensory areas that process the conditioned and unconditioned stimuli, certain regions of the amygdala that undergo plasticity (or long-term potentiation) during learning, and the regions that bear an effect on the expression of specific conditioned responses. These pathways ...
Through observational learning, humans can learn to fear potentially dangerous objects—a reaction observed in other primates. [21] A study on non-human primates, showed that the primates learned to fear snakes at a fast rate after watching parents' fearful reactions. [21]
Pavlovian fear conditioning is a behavioral paradigm in which organisms learn to predict aversive events. [1] It is a form of learning in which an aversive stimulus (e.g. an electrical shock) is associated with a particular neutral context (e.g., a room) or neutral stimulus (e.g., a tone), resulting in the expression of fear responses to the originally neutral stimulus or context.
Fear of the dark is a common fear or phobia among toddlers, children and, to a varying degree, adults. A fear of the dark does not always concern darkness itself; it can also be a fear of possible or imagined dangers concealed by darkness. Most toddlers and children outgrow it, but this fear persists for some as a phobia and anxiety.
Humans' subjective experience is that emotions are clearly recognizable in ourselves and others. This apparent ease of recognition has led to the identification of a number of emotions that are said to be basic, and universal among all people. However, a debate among experts has questioned this understanding of what emotions are.
The fear, anxiety, or avoidance is not attributable to the physiological effects of a substance (e.g., an addictive substance, a medication) or another medical condition. The fear, anxiety, or avoidance is not better explained by the symptoms of another mental disorder, such as panic disorder, body dysmorphic disorder, or autism spectrum disorder.