Intro to MATLAB

Question 1

What is psychtoolbox?

Answer 1

• Uses MATLAB functions for behavioural experiments

- Precise control of stimulus and collection of responses

Question 2

What is the order of precedence in mathamatical functions?

Answer 2

1) Brackets
2) Power
3) Multiplication/Division
4) Addition/SUbtraction

Question 3

What does the command ‘clc’ do?

Answer 3

Clears command window

Question 4

What does the function ‘clear’ do?

Answer 4

Removes items from the workspace

Question 5

What does the function ‘save’ do?

Answer 5

Saves workspace variables to file

Question 6

What does the function ‘load’ do?

Answer 6

Loads variables from file into workspace

Question 7

What are variables?

Answer 7

A storage location paired with an associated symbolic name as an identifier
- Must be defined before it can be used

Question 8

What are Boolean expressions?

Answer 8

Are either true or false

Question 9

What can variables not do?

Answer 9

Contain spaces or start with numbers

Question 10

What does the ‘exist’ function do?

Answer 10

Checks for the existence of a variable or function

Question 11

What can the ‘who’ function do?

Answer 11

list variables

Question 12

What can the ‘which’ function do?

Answer 12

locate functions and files

Question 13

What are functions?

Answer 13

small executables which achieve a task in a pre-defined way

Question 14

What is the structure of a function in MATLAB?

Answer 14

function output = myfunction (input)
% description of function 
<< lines of code to implement function >>

Question 15

What are control statements?

Answer 15

Controlling what is executed when and under what conditions

e.g ‘if’, ‘elseif’ and ‘else’