Brain circuit/circuitry

Each of these pathways (or circuits) serves a particular purpose and works in concert with other circuits. Technology has only recently allowed us a glimpse of these circuits in action. Thus, we are just beginning to map out the pathways and functions of the myriad brain circuits involved in the regulation of thought and emotion. As you ll see later, however, understanding brain circuitry can help us to anticipate what the beneficial effects and side effects of a medication may be. 

Faulty Wiring and/or Developmental Delay. Remember that neurotransmission moves through brain circuits. Some mental illnesses may be caused by misconnections in the circuitry that can result in the brain s equivalent of crosstalk that occurs when telephone lines are crossed. Examples of this problem are the so-called neurodevelopmental disorders such as autism, certain forms of mental retardation, and possibly schizophrenia. 

Brain Reward Circuitry Four Circuit Elements Wired in... 

First, computer circuits are hard-wired at the factory. A computer s circuitry never changes. In contrast, as we noted previously, brain circuitry is constantly adapting through a process of pruning and reestablishing connections. This pruning affords the nervous system a plasticity that enables it to adapt continually to the demands of an ever-changing environment. 

Option 3 The switching transistor is done away with and current is sourced from the electronic ignition circuit ( brain box ) and passed directly to both the ignition coil and the transformer. This simplifies the wiring but may possibly halve the total amount of power sent to both. The effect of extra current demand through the brain box to power both coils is unknown. There is the danger of frying the brain circuitry. 

The mammalian brain also possesses unifying anatomical circuits this circuitry appears to derive from the basic motor circuit. Motor systems, for example, unify diverse mofivafions and sensations fo drive singular purposeful actions. Anatomical circuifs underlying sleep-wakefulness, attention, and memory also unify varied inpufs info singular end sfafes. Consciousness, which is a unified sfafe, is likely fo be similarly driven by anatomical circuits such as those that drive motor actions, arousal, selective attention and memory. 

The analysis of hundreds of lesion experiments conducted mainly on octopuses (review in 28) and of several dozens of serial histological sections of the brains of the animals allowed Young and coworkers to describe the functional anatomy of the nervous system by identifying a circuitry leading to their visual and tactile processing a circuit where learning and memory is achieved by a series of intersecting matrices [2, 22]. 

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