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B A B o th i n p u ts a re p re s e n t O n e o r n o n e i s p re s e n t
2 1
1 0
In p u ts
) X Q F WL R Q LQ J E / H D U Q LQ J U X OH
7ZROHDUQLQJUXOHV ²$QRXWSXWQRGHWKDWUHDFWHGWRRVRRQ)DOVHDODUPHGVHHVRQHRI LWVLQSXWVORZHGGRZQ ²$QRXWSXWQRGHWKDWGLGQ·WUHDFWPLVVHGVHHVKLVWKUHVKROG UHDGMXVWHG2 0 4 0 6 0 8 0 1 0 0 E p o ch
0 .2
0 .4 0 .6
0 .8
1 R M S E V er y f a st le a rn in g ! = 1 0 t ri a ls
B
A
B o th i n p u ts a re p re s e n t O n e o r n o n e i s p re s e n t
2 1
1 1
In p u ts
7 K H P D WK H P D WL F V L V V LP S OH
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M in I D M in O
I W Σ O
W I () W I ∑
020
40
60
80
100
120 250450650 reaction times (ms)
% o bse rv ed
,I Q R LV H H [ LV WV
1RLVHFDQEHHLWKHULQWKHLQSXWVI WKHGHOD\VDRUERWK D&DQVWLOOOHDUQHDVLO\⇒
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0 .0 0 1
0 .0 0 2
0 .0 0 3
0 .0 0 4
0 .0 0 5
0 .0 0 6
y c n e u q e r F
= 1 0 t ri a ls
15 D F H 1 H WZ R U N $ F F X P X OD WR U P R G H O
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Both are present One or none present
B
A
, , ,
,
Both are present longer delays, smaller threshold
2 1
1 1
In p u ts
25 D F H 1 H WZ R U N 3 U LR U LW \ O H D U Q H U 5 D F H 1 H WZ R U N V O H D U Q U X OH V
´6D\$DVVRRQDVWZRHYLGHQFHVDUH SHUFHLYHG RUHOVH 6D\%DIWHUDZKLOHµ,I U H V S R Q V H V X V H V S D U WO \ W K H V D P H L Q IR WK H \ P X V W E H R U G H U H G V R W K D W R Q H V LJ Q D O G R H V Q R W U H OH D V H E R WK U H V S R Q V H V D W R Q F H ´ 6 H U LD OL W\ H II H F Wµ S U R G X F H G E \ D S D U D OO H O Q H WZ R U N
30 1 0 2 0 3 0 4 0 T im e 0 .0 2 0 .0 4 0 .0 6 0 .0 8 0 .1
D e n si ty A B
5 D F H 1 H WZ R U N 9 D U LD E LO LW \ U H G X F H U
45HGXQGDQF\LVOLNHO\WRH[LVW ,QD5DFH1HWZRUNVVORZ UHGXQGDQWVLJQDOVDUH LJQRUHGDUULYHGWRRODWH
5 H G X F H V Y D U LD E LO LW \ 6 S H H G X S U H V S R Q V H V 5 H G X F H V H U U R U V
Extracted from D. Hebb, Textbook of psychology
