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Figure 1.2
Figure 1.3
Figure 1.4
Figure 1.5
Electrode
Stim ulus
D ata Recorder
Stimulus Cell Response
Figure 1.6
Emitters
Detectors
Figure 1.7
Figure 1.8
C a me ra In p u t
C o mp u te r
D isp la y o u tp u t
V isu a l Sce n e
80 83 90 95 20 20 19 19
81 88 89 99 10 12 14 15
75 63 64 80 32 11 12 13
Figure 1.9
Figure 1.10
R e ce p to rs
In te rm e d ia teNe u ro n s
In te rm e d ia teNe u ro n s
T h a la m u s
P r im a ryC o r te x
S e co n d a ryC o r te x
S e n se O rg a n
S e n so ry Pa th wa y
B ra in
Hig h e r C o r te x
Figure 1.11
Stimulus Cell Response
Receptive Field
Figure 1.12
S tim ulus
C ortica lActiv ity
Right V isual F ie ld
S tria te C ortex o fLeft Hem isphere
B ased on T oote ll et a l. (1982)
Figure 1.13
Figure 1.14
Figure 1.15
Figure 1.16
Figure 1.17
Size
SmallFlight
Undulating
Behaviour
Flits, hopsBody
Throat: crimsonW ings: black, yellowTail: blackBill: white, short, stubby
Goldfinch
Figure 1.18
R e ce p to rs
In te rm e d ia teNe u ro n s
In te rm e d ia teNe u ro n s
T h a la m u s
Pr im a ryC o r te x
Se co n d a ryC o r te x
R e p re se n ta t io n s C o m p u ta tio n s
Hig h e r C o r te x
Figure 1.19
-0 .1
0
0 .1
0 .2
0 .3
0 .4
0 .5
-1 0 1 2 3 4 5 6
Rand om Varia tion in T hresh o ld
Threshold
Area = 0.1
-0 .1
0
0 .1
0 .2
0 .3
0 .4
0 .5
-1 0 1 2 3 4 5 6
Rand om Varia tion in T hresh o ld
Threshold
Area = 0.9
-0 .2
0
0 .2
0 .4
0 .6
0 .8
1
1.2
-1 0 1 2 3 4 5 6
Stim ulus Level
Figure 1.20
S e n s ory Proce s sN eural inf ormation
processing
D e cis ion Proce s sD oes response
exceed criter ion?
ExternalStimulus
I nternal 'noise'N O
Respond "yes"YES
-0 .1
0
0.1
0 .2
0 .3
0 .4
0 .5
-4 -2 0 2 4 6
Sig nal Detection Th eory
N oise O nlyN o ise + Signal
Sensory M agni tude
Sensit ivity
-0 .1
0
0.1
0 .2
0 .3
0 .4
0 .5
-4 -2 0 2 4 6
Sig nal Detection Th eory
N oise O nlyN o ise + Signal
Sensory M agni tude
Crite rion
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