anterior cingulate cortex A region of the medial frontal lobe involved in a variety of cognitive, motor, and emotional-motivational functions, including Brodmann's area 24 and perhaps the closely associated area 25.

attention A class of cognitive processes involving prioritization or selection among stimuli to be processed, tasks to be performed, or responses to produce.

frontal eye field A region centered at the intersection of the precentral sulcus with the superior frontal sulcus, that is, Brodmann's area 6. This region is involved in generation and control of eye movements.

reaction time The time elapsed from onset of the imperative stimulus to initiation of the subject's response.

saccade Rapid eye movement that changes the point of fixation from one location to another.

stimulus onset asynchrony The time elapsed from the onset of the first stimulus (or the cue) to the onset of the imperative stimulus.

Inhibition refers to mechanisms by which the nervous system suppresses information, restricts its use, or restrains its transmission from one place in the brain to another. This article addresses hypotheses about the role of inhibition at the systems level, considering the possible functional consequences of inhibitory processes for cognition and behavior. Ultimately, one might guess that at the neuronal level, inhibitory processes would be implemented via neuron-to-neuron communication in which release of inhibitory neurotransmitters reduces the probability of action potentials in postsynaptic target neurons of brain structures whose activity needs to be curtailed. As will be shown, however, reduction or suppression of activation is not the only way in which a systems-level inhibitory outcome can be achieved in cognition or behavior, although it is the most commonly proposed mechanism.

Conquering Fear In The 21th Century

Conquering Fear In The 21th Century

The Ultimate Guide To Overcoming Fear And Getting Breakthroughs. Fear is without doubt among the strongest and most influential emotional responses we have, and it may act as both a protective and destructive force depending upon the situation.

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