Block ごとにファイル名を変えてデータを保存

 

Block ごとにファイル名を変えてデータ（Data）を保存する。ファイル名の最後にblock番号を追加した。

 

subnum=input('Please enter your No.','s');% input Subject Number

 

blk=1;

blkn=5; % Number of blocks

while blk＜blkn+1 %  ============= block

 

%re-order the 16 trials randomly

tr=1;

trn=16; % Number of trials

 

while tr＜trn+1 % Start the trial -------------------------

 

% Stimuli Presentation

% Response 

tr=tr+1;

end;% End of one trial -----------------------

 

savefile=['Exp2011_',subnum,'_' num2str(blk)];

save (savefile,'Data'); 

blk=blk+1;

end; % End of one block =====================

 

Rand()

>> help Rand

 RAND Uniformly distributed pseudorandom numbers.

    R = RAND(N) returns an N-by-N matrix containing pseudorandom values drawn

    from the standard uniform distribution on the open interval(0,1).  RAND(M,N)

    or RAND([M,N]) returns an M-by-N matrix.  RAND(M,N,P,...) or

    RAND([M,N,P,...]) returns an M-by-N-by-P-by-... array.  RAND returns a

    scalar.  RAND(SIZE(A)) returns an array the same size as A.

 

    Note: The size inputs M, N, P, ... should be nonnegative integers.

    Negative integers are treated as 0.

 

    R = RAND(..., 'double') or R = RAND(..., 'single') returns an array of

    uniform values of the specified class.

 

    Compatibility Note: In versions of MATLAB prior to 7.7, you controlled

    the internal state of the random number stream used by RAND by calling

    RAND directly with the 'seed', 'state', or 'twister' keywords.  That

    syntax is still supported for backwards compatibility, but is deprecated.

    Beginning in MATLAB 7.7, use the default stream as described in

    RANDSTREAM. ＊これは知らなかった。

 

    The sequence of numbers produced by RAND is determined by the internal

    state of the uniform pseudorandom number generator that underlies RAND,

    RANDI, and RANDN.  Control that default random number stream using its

    properties and methods.  See RANDSTREAM for details about the default

    stream.

 

    Resetting the default stream to the same fixed state allows computations

    to be repeated.  Setting the stream to different states leads to unique

    computations, however, it does not improve any statistical properties.

    Since MATLAB uses the same state each time it starts up, RAND, RANDN, and

    RANDI will generate the same sequence of numbers in each session unless

    the state is changed.

 

    Examples:

 

       Generate values from the uniform distribution on the interval [a, b].

          r = a + (b-a).*rand(100,1);

 

       Generate integer values from the uniform distribution on the set 1:n.

          r = randi(100,1);

 

       Save the current state of the default stream, generate 5 values,

       restore the state, and repeat the sequence.

          defaultStream = RandStream.getDefaultStream;

          savedState = defaultStream.State;

          u1 = rand(1,5)

          defaultStream.State = savedState;

          u2 = rand(1,5) % contains exactly the same values as u1

 

       Replace the default stream with a stream whose seed is based on CLOCK, so

       RAND will return different values in different MATLAB sessions.  NOTE: It

       is usually not desirable to do this more than once per MATLAB session.

          RandStream.setDefaultStream(RandStream('mt19937ar','seed',sum(100*clock)));

          rand(1,5)

 ＊これを使う。

    See also Randi, randn, RandStream, RandStream/rand, RandStream/getDefaultStream,

             sprand, sprandn, randperm.

    Overloaded methods:

       RandStream/rand

    Reference page in Help browser

       doc rand

>>

 

Jigsaw Puzzle & Alzheimer's disease

Healthy Brain

Alzheimer Society of Canada

Mathematica入門

神戸大学 Mathematica ホームページ

http://bach.istc.kobe-u.ac.jp/mma/

 

Mathematica ホームエディション

 

QuickTime Player で画面を録画する

QuickTime Player の画面収録機能を使う。心理実験で、画面上の操作の行動記録に使うこともできる。

 

Mac 101：QuickTime Player

http://support.apple.com/kb/HT4024?viewlocale=ja_JP

画像の一部を提示する ２

読み込んだ画像の一部を選択し、画面上の位置を指定して提示する。

DrawTextureのパラメータで指定する。

1) 対角線上の２点で矩形領域を選択する。

2) 提示位置を指定する。同様に矩形領域で指定。指定した領域の大きさによって、拡大／縮小される。

%準備

screens=Screen('Screens');

screenNumber=max(screens);

[window,screenRect]=Screen(screenNumber,'OpenWindow',0,[],[],2);

[cx, cy]=RectCenter(screenRect); %画面の中心

%読み込みと変換

A=imread('sample.jpg');

w = Screen(window, 'MakeTexture', A);

%切り取り部分選択と提示位置指定（画面中央左側）

D=256;

Screen('DrawTexture', window, w, [1,1,D,D],[cx-2*D,cy-D/2,cx-D,cy+D/2]);

Discrimination of biological motion patterns in pigeons

 

Discrimination of biological motion patterns in pigeons

Michaela Loidolt, Nikolaus Troje, & Ludwig Huber

http://cogbio.univie.ac.at/labs/pigeon-lab/

 

 

cf.

J Exp Anal Behav. 1998 November; 70(3): 281–299.

Categorization Of Natural Movements By Pigeons: Visual Concept Discrimination And Biological Motion.

W Dittrich, S Lea, J Barrett, and P Gurr

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1284687/