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Just to add to Jens answer, opinion is still divided regarding whether memory is subserved by distinct systems, or is a distributed, emergent property of perceptual, navigational and semantic systems. Whereas patient data has always strongly implicated distinct memory systems (e.g., declarative vs non-declarative), multivariate fMRI studies have provided ...

I believe the answer lies in minicolumnar morphology in the neocortex. It's been shown that the minicolumns of autsitics and gifted individuals have narrower minicolumns, with greater spacing between each minicolumn. It's speculated that this creates an increased ability to distinguish percepts. Here is a paper on the topic: Casanova MF, Switala AE, Trippe ...

As Chuck pointed out in the comments, it's important not to take a metaphor too literally. Comparing our memory to a mailbox may have some validity, it is not true that our memory can "fill up"-- i.e., that we have a limited capacity for knowledge in general. No matter how old or how many facts you have learned, you will always be capable of learning new ...

Suppose a person learns a subject in college and waits for 10 years before learning it again. An exam is given one week after the person relearns the subject. So in this case, the ISI (inter-study interval) is very long compared to the RI (retention interval). The person will definitely forget some of the material after the 10 years. So how long they would ...

It sounds like you are interested in the Spacing Effect. A search on Google Scholar for "spacing effect" for articles published since the year 2000 yields over 2500 articles some of which might be worth pursuing. Perhaps you might want to start by having a read through the meta-analysis in Psychological Bulletin by Cepeda et al (2006). To quote the ...

As far as your first question is concerned: It seems that you're interested in the distinction between declarative and nondeclarative forms of memory. These different forms of memory have also been termed knowing that and knowing how (Cohen & Squire, 1980) Nondeclarative memory, according to Squire (2004), is an umbrella term refering to Procedural ...

The literature generally provides strong support for the use of self-testing in cases like this, particularly via the use of flash cards (Karpicke and Roediger, 2008). The efficacy of self-testing for facilitating learning of arbitrary or complex sets of items has been suggested to be driven largely by the combination of two effects: the generation effect ...

This is a tough question, and there's a few routes to go. When we are watching this life played back, do we want to be able to go to any arbitrary moment and observe what was happening, or do we only want to watch life as we watch it? This would be the difference between recording all information that bombards our brain, or just the information that we are ...

There is strong evidence that suggests there are changes in neural pathways, synapses, and even birth of new neurons due to changes in behavior, environment and neural processes. That is known as Neuroplasticity, which suggests that our brain's capacity can be "recycled" and even augmented in many cases. If I had to choose a metaphor to make an analogy of ...