Memory Definition and 309 Threads

So I'm wondering if there are good studies of memory blocks and memory recall. For example, I will fairly often meet a person that I haven't seen for a while, and have a hard time recalling their name. I often "feel" like there is a mental "block" electically or chemically to recalling their...

Hello, I've heard about "H.M." and similar patients that lost the ability to create declarative memories, but can still create non-declarative memories. I was wondering, since one in this condition can for example, develop a habit of drawing complex shapes, and not know they did it, can they...

When I try to imagine face of some persons like relative,friend, celebrities etc. I can visualize them in my mind. I wonder how do brain decide what to show to me in my mind about that person? I might have seen the person at his/her various ages, various dresses, various places. While...

Would someone please explain what this quote is saying? What does it mean when they say that spacetime locally reverts to the vacuum? Wasn't the passing gravitational wave made of spacetime vacuum to begin with? And what about the detectors not returning to their original relative position? Is...

Does it make sense to say that implicit memory processes such as imprinting, priming, conditioned reflex, emotional conditioning and procedural skills are instincts? We do perform them instinctually. And I don't mean the behaviors that are a result of doing these processes. I mean the processes...

-iation. Could the opacity of a material to one band of EM radiation (light) could be altered by irradiating the material with another band of EM radiation (X rays)? I think you are suggesting that: By raising the electrons in the atoms to higher energy bands (with the X rays), so that they will...

I have an array of n strings (with blank spaces). Data type of an array is char***. How to allocate memory for char*** data type?

Homework Statement I am trying to run code for the code below but MATLAB runs out of data. The Attempt at a Solution NumberOfVariables = 9; k=NumberOfVariables^2-NumberOfVariables+1; integers = 0:k-1; numbers = 1:k-1; tic s = combnk(integers,NumberOfVariables); AllAnswers = []; for i =...

How is memory of programs stored in RAM? The memory for a single program is represented: Where memory reserved for stack, data , bss and code segment are fixed, but heap can grow indefinitely. Is the free memory between stack and heap all of a computer available RAM? So where is the memory...

Homework Statement This task is related to RAM memory organization. Question is: "Which memory circuit organization is required on 4GB memory module if every circuit participate equally in 64-bit of memory module? Write at least two organizations." Homework Equations I don't know what should I...

Hi guys.. I am seeking desperately for an answer to this question. I would be very thankful if someone answer me correctly. Question is related to computer architecture (memory organization). Which memory circuit organization is required on 4GB memory module if every circuit participates...

Hello I am not an expert in this field but I am really hoping to understand as much as I can about the concepts described in my questions below. I might be using some improper jargon and expressions, so I apologize if some things are incorrect or confusing. #1 Do all the neurons have the same...

and all this time I thought it was just forgetfulness and senility setting in This explains so much :wink: ... cheers Dave

Hey Guys, I can't rap my head around these questions. I'm not to sure how to begin them. Any insight would help. 1) Convert the 7-bit binary code 011 1101 into a suitable Hamming code that can detect and correct a single bit error. Use EVEN parity. Write your final answer as a 3-digit...

Hey all, I was writing this program just now and wondered whether it would be easier for the cpu if I stored a number before I divided it by 2 or if i multiplied by 2 later to get that number back, I know it won't affect speed at all really but was just wondering, Any help appreciated.

I am curious as to which OS and its siblings (e.g Linux={Fedora, Mint,...}) consume the least memory and HD space but sure are still perfectly functional after installed. Thanks a lot.

What is the best non-programmable scientific calculator with a scrollable (or otherwise easily accessible) memory of past calculations? I would like to find one where the full decimal/standard answers from past calculations can easily be selected and used for new calculations. I already know...

I notice a lot of people say that physics is all understanding. But to me it seems like useless memorization of formulas (as opposed to say real analysis). I will give an example over here, with my thought process. Perhaps someone who disagrees with me can tell me their thought process, and...

Hello , I need help , rom memory is memory that store program. we can only read rom memory. https://www.physicsforums.com/attachments/https://www.physicsforums.com/attachments/77060 look this diagram why does we connect both memory. I have read that when we start to read the program memory. we...

1. Which memory storage is better if I want the memory to be durable? Like when I drop it or hit it and still have the least chance of corrupting its memory. 2. Which memory is better if I want to store it for centuries without rewriting the memory and then be able to access the memory without...

I am excited to tell you that I will get new RAM bar for my PC. Oh I like this site, http://www.crucial.com/ it can read all hardware thingies on my computer, I now know I have Maximum memory: 16384MB Slots:2 (2 banks of 1) *Not to exceed manufacturer supported memory. 4GB Empty that means I...

Hello! (Smile) I am looking at the algorithms Pop and Push of a stack: void Push(info x, pointer S) pointer P; /* temporary pointer */ P=NewCell(NODE); /* malloc() */ P->data=x; P->next = S; S=P; /* This wouldn't give the right result in C*/ Why doesn't...

Homework Statement A car traveling with a constant speed of 80km/hr passes a stationary motorcycle policeman. The policeman sets off in pursuit, accelerating uniformly to 80km/hr in 10 seconds and reaching a constant speed of 100km/hr in a further 5 secs. At what time will the policeman catch...

Hey! :o At the end of a program I have to delete all the data structures and to free all the allocated memory. What am I supposed to do?? (Wondering)

hello I need some help. I created one example to understand some basic component ram memory A accumulator 4bit R1 resistor 4 bit ( R1 is temporary data storage register ) Register memory address bus - 2 bits (RA0,1); Register memory data bus - 4 bits (RD0~3); Register memory read enable...

Question: An 8K x 8 memory module consists of 2K x 8 of ROM which starts from address 1000H and 6K x 8 of RAM which starts from address 2000H. The module is to be realized using 2K x 8 RAM devices and 2K x 8 ROM devices. The RAM devices have active low write enable (WE) and active low chip...

Hello! (Wave) I want to show that the $T(n)$ of the following algorithm is equal to $O(\log n)$. How can we do it, now that we have if, else conditions? (Thinking) int BinarySearch(int A[1…n], int y, int low, int high) { if (high < low) { return -1; //not found } mid = low + (high -...

Sean Carroll has stated several times that the reason we can remember the past and not the future is because entropy is increasing, i.e. because there is an arrow of time. Is this statement justifiable? Remember that life and its processes, including memory, require negentropy. In other words...

Let me start by saying I know this is a funky way to program, but my teacher is requiring us to go about it this way. also: I CANT use std::string, classes, constructors for this project. I am required to use this archaic method of c-style strings with dynamic memory allocation occurring...

Hi, I'm trying to write a simple program for reversing a string stored in memory. This is what I've come up with. For some reason this code coredumps, so something is wrong. any ideas ? #include <stdio.h> #include <string.h> #include <stdlib.h> char *reverse(char *buf,unsigned...

1. Using new to create a memory block for a static array of strings. How to know the number of strings in an array of strings Homework Equations new The Attempt at a Solution 1. static char ** array=new char*[]; // why the empty [] ? Will I get a minus point if coding like this ...

how we access memory and which instruction we use that determine weather we are accessing Internal rom , Internal Ram ? how to access rom example Mov R0, #55H ; load R0 with 55H Mov R1, #85H ; load R1 with 85H how to access ram memory Mov 00, #55H ; ram location 00 has 55H...

Hello, my textbook states that "Circuits that contain capacitors and/or inductors have memory". In what sense do they have memory? my understanding of memory, is retaining value. how do inductors/capacitors retain value? thanks daniel

Here's an interesting article I found today: http://sharpbrains.com/blog/2010/01/10/working-memory-a-better-predictor-of-academic-success-than-iq/ It seems that working memory is a better predictor of academic success than IQ.

I want to delve into the topic of the way the mind works in terms of storing and retrieving memory, and all sources that I can find through Google (wikipedia etc) seem to cover this from a psychological perspective without going into any detail as to how the individual neurons/synapses network...

if we declare variables with different type specifiers, is the memory location(address) assigned according to the type specifier or is that just random? ex. 1. int variables are assigned location closer to each other or specific region of memory, and floats, double have different...

There are two ways I'm used to allocate memory dynamically. int * array = malloc(10 * sizeof(int)); But this type of memory allocation, have a predefined size, which is not desirable. I keep hearing about linked list and push & pop. I've reviewed them over and over again, and they just...

Because when parts or one half of the brain(hemispherectomy) is removed on treating epileptic patients or for any other reason. There is not observed any change in the patient memory or personality. The person remain the same even after removal of half of the brain. How is it explained...

"Analog" Memory? Is anyone aware of physical or mathematical reasons why "analog" memory is not possible? That is, a system that takes in a continuous waveform, saves it, and then later releases the same continuous waveform without any sort of sampling or interpolation. I certainly can't...

So my numerical analysis class requires me perform iterations involving huge expressions into my strictly NON-graphical scientific calculator. It often happens so that my current calculator (CASIO fx-911ES PLUS) does not allow me to feed in it a expression which goes beyond its input memory...

I am told that an exponential distribution is memoryless. But why aren't other distributions, such as the normal distribution, also memoryless? If I pick a random number from an exponential distribution, it is not effected by previously chosen random numbers. But isn't that also the case for...

Homework Statement This problem is from Spacetime Physics by Taylor In one second some desktop computers can carry out one million instructions in sequence. Assume that carrying out one of the instruction requires transmission of data from the memory to the processor and transmission of the...

Experience teaches plants to learn faster and forget slower in environments where it matters Gagliano, M, et al. (2013). Experience teaches plants to learn faster and forget slower in environments where it matters. Oecologia, Epub.

What is a good way to memorize that ## \omega = \sqrt{\dfrac{k}{m}} ## ? I always confuse it with: ## T = 2\pi \sqrt{\dfrac{m}{k}}## , and can never tell them apart. (i guess part of it is that I'm not too familiar with it yet)

I understand that giant magnetoresistance is the effect that you can change the conductivity by a magnetic field and the basics of how it works in terms of spin etc. But how is this exactly used to store memory?

Hello, Another (probably obvious) question: malloc() assigns memory space in bytes; e.g. malloc(100) assigns 100 bytes of space and returns a pointer. However, in creating a linked list, I can allocate space a assign it to a pointer and the structure already exists? For example...

Can anyone provide references for stochastic processes where future steps do depend on the past state of the system? Most of the material I'm finding deals purely with memoryless processes. Thanks!

Homework Statement The problem is finding the memory location of a three-dimentional array Temp. Each index of temp goes from 1 to 100 and each element stores 4 bytes. The array is setup such that the last index varies fastest, aka: Temp[1,1,1], Temp[1,1,2], ... Temp[1,1,100]...

I have been asking for years how to fix the virtual memory issue in COMSOL. I have 32Gb of memory, and it will use more virtual memory than RAM when there are at least 25Gb of RAM unused. Does anyone have a fix for this? I'm using 64 bit COMSOL

http://www.theguardian.com/film/2013/sep/05/jack-nicholson-retires-memory-loss Sound like it's possibly more serious than an aging memory. It surprises me because The Departed was just on TV a few nights ago and I happened to see it for the first time. This was released in 2006, just 6 years...