Habituation and Novelty

Beginning in infancy and throughout the life span, humans are motivated by newness, change, and excitement. Habituation, the tendency to lose interest in a repeated event and gain interest in a new one, is one of the most fundamental human reflexes. If the thermostat were to suddenly turn the air conditioning on, you would hear the loud humming sound begin, but within minutes you couldn’t even hear it if you tried. Habituation, a fundamental property of the nervous system, provides mechanis...

 Argonauts: Magna Cortica

THE MAGNA CORTICA ORIGINAL TENETS (DATE UNKNOWN BUT BEFORE BF 80) I. Self knowledge. Sapient beings have the right to know whether they’ve been mentally modified. II. Self-modification. Sapient beings have the right to pursue self-modification. III. Refusing modification. They also have the right to refuse it. IV. Modification (or not) of progeny. Sapient beings have the right to modify—or not—their own progeny. V. Knowledge of who has been modified or selfupgraded. Polities and ...

 What Is Learning?

Learning is very difficult to define. It is the matter of our minds, and includes thinking, becoming aware, imagining, seeing, hearing, hoping, remembering, abstracting, planning, and problem solving (Malone, 1991). Learning is deep in our species, emerging from our desire to take in new information by actively exploring new territory. Learning is a physical phenomenon, occurring in the sensory systems, as energy from light waves and vibrations in the air is converted into electrical impulses...

 The Myth of the Brain as a Video Camera

Before we discuss what current research tells us about memory and recall, it may be helpful to address a common misconception that emerged from the work ofCanadian neurosurgeon Wilder Penfield in the 1930s and 1940s. Penfield reported that during surgery, an electrical stimulation of the temporal lobe produced episodes of recall, almost like seeing movie clips. Many concluded that the brain ―videotaped‖ life, and to remember things, our memories simply needed to be prompted. But these epi...

 Whole Brain Emulation

We consider a strategy of straightforward duplication of the activity, and look at the numbers of some of the components. The human brain has up to one hundred billion (10^11) neurons and between one hundred trillion (10^14) and one quadrillion (10^15) synapses. But we have reached a point where for purposes of data acquisition these objects are now considered fairly large (e.g. 200 nm to 2,000 nm for synaptic spines and 4,000 nm to 100,000 nm for the neural soma), at least by the standards o...