Transcript
Page 1: uroscience Welcome to CSE2330 Introduction to …

Len

nar

t G

ust

afss

on pag

e

Cours

e note

s C

SE

2330

1

Wel

com

e to

CS

E2

33

0 I

ntr

od

uct

ion

to

Co

mp

uta

tio

na

l N

euro

scie

nce

D

r. A

ndre

w P

apli

nsk

i

Sch

ool

of

Com

pute

r S

cien

ce a

nd S

oft

war

e E

ngin

eeri

ng (

CS

SE

), M

onas

h U

niv

ersi

ty

Dr.

Len

nar

t G

ust

afss

on

Dep

t. o

f C

om

pute

r S

cien

ce a

nd E

lect

rica

l E

ngin

eeri

ng,

Lule

a U

niv

ersi

ty o

f T

echnolo

gy

, L

ule

a, S

wed

en

Res

earc

h i

nte

rest

: M

odel

ling l

earn

ing i

n a

uti

sm w

ith n

eura

l net

work

s, i

.e. ap

ply

ing c

once

pts

and

tech

niq

ues

fro

m c

om

puta

tional

neu

rosc

ience

to g

ain i

nsi

ghts

into

the

my

ster

ies

of

auti

sm

Page 2: uroscience Welcome to CSE2330 Introduction to …

Len

nar

t G

ust

afss

on pag

e

Cours

e note

s C

SE

2330

2

Co

urs

e li

tera

ture

: W

.W.

Ly

tton:

Fro

m C

om

pute

r to

Bra

in;

Foundati

ons

of

Com

puta

tional

Neuro

scie

nce, S

pri

nger

,

ISB

N 0

-387-9

5528-3

A t

ext

full

of

insi

ghts

that

does

n’t

rel

y h

eavil

y o

n m

athem

atic

s.

The

idea

l in

troduct

ion a

t an

under

gra

duat

e le

vel

.

E.T

. R

oll

s an

d A

. T

reves

: N

eura

l N

etw

ork

s and B

rain

Functi

on, O

xfo

rd U

niv

ersi

ty P

ress

, IS

BN

0-1

9-8

524 3

(pbk)

Cover

s a

wid

e var

iety

of

neu

ral

net

work

model

s an

d p

lace

s th

em i

n p

roper

cen

tral

ner

vous

syst

em c

onte

xt

but

does

n’t

tre

at m

odel

ling o

f neu

rons

at a

ny

det

ail.

A v

aluab

le c

om

ple

men

tary

tex

t.

P.

Day

an a

nd L

.F.

Abbott

: T

heore

tical

Neuro

scie

nce C

om

puta

tional

and M

ath

em

ati

cal

Modeli

ng o

f N

eura

l Syst

em

s, T

he

MIT

Pre

ss,

ISB

N 0

-262-0

4199-5

A c

om

pre

hen

sive

text

whic

h d

oes

rel

y h

eavil

y o

n m

athem

atic

s.

The

idea

l in

troduct

ion a

t a

post

gra

duat

e le

vel

.

Addit

ional

sugges

tions

for

read

ing o

n p

arti

cula

r to

pic

s w

ill

be

giv

en a

s th

e co

urs

e pro

ceed

s.

Page 3: uroscience Welcome to CSE2330 Introduction to …

Len

nar

t G

ust

afss

on pag

e

Cours

e note

s C

SE

2330

3

Co

urs

e o

utl

ine,

lec

ture

s T

he

lect

ure

wil

l la

rgel

y f

oll

ow

the

pre

senta

tion i

n L

ytt

on b

ut

som

e ad

dit

ional

mat

eria

l w

ill

be

cover

ed.

Ly

tton d

ivid

es h

is b

ook i

nto

four

sect

ions

whic

h w

e w

ill

trea

t ac

cord

ing t

o:

Per

spec

tives

(ai

min

g a

t tw

o l

ectu

res)

C

om

pute

rs (

aim

ing a

t p

arts

of

one

lect

ure

)

Cy

ber

net

ics

(aim

ing

at

six

lec

ture

s)

Bra

ins

(aim

ing a

t fo

ur

lect

ure

s)

Unsu

per

vis

ed l

earn

ing a

nd r

einfo

rcem

ent

lear

nin

g a

s w

ell

as a

ttem

pts

to m

odel

Alz

hei

mer

’s

dis

ease

and t

he

auti

stic

spec

trum

dis

ord

ers

wil

l al

so b

e co

ver

ed i

n l

ectu

res,

aim

ing a

t fo

ur

lect

ure

s.

Page 4: uroscience Welcome to CSE2330 Introduction to …

Len

nar

t G

ust

afss

on pag

e

Cours

e note

s C

SE

2330

4

Co

urs

e o

utl

ine,

pra

cs

The

pra

ctic

al e

xer

cise

s w

ill

be

dev

ote

d t

o m

odel

ling n

euro

ns,

neu

ral

net

work

s an

d t

o

appli

cati

ons

of

com

puta

tional

neu

rosc

ience

to i

llust

rate

and g

ain u

nder

stan

din

g i

n p

arti

cula

r of

edge

enhan

cem

ent

in v

isio

n

as

soci

ativ

e m

emory

and A

lzhei

mer

’s d

isea

se

at

tem

pts

to u

nder

stan

d a

spec

ts o

f au

tism

Page 5: uroscience Welcome to CSE2330 Introduction to …

Len

nar

t G

ust

afss

on pag

e

Cours

e note

s C

SE

2330

5

Wh

at

is a

pro

per

ro

le f

or

com

pu

tati

on

al

neu

rosc

ien

ce?

F

rom

Ly

tton (

pag

e 36):

Neu

roan

atom

y i

s th

e st

udy

of

form

. N

euro

phy

siolo

gy

would

lik

e to

be

the

study

of

funct

ion.

Unfo

rtunat

ely,

it o

nly

occ

asio

nal

ly r

ises

to t

his

idea

l. W

e

are

oft

en s

o c

luel

ess

as t

o w

hat

’s g

oin

g o

n t

hat

neu

rophy

siolo

gy

bec

om

es

more

a d

escr

ipti

on o

f th

e dy

nam

ics

than

an e

xpla

nat

ion o

f it

s m

eanin

g o

r

inte

nt.

Page 6: uroscience Welcome to CSE2330 Introduction to …

Len

nar

t G

ust

afss

on pag

e

Cours

e note

s C

SE

2330

6

Wh

at

is a

pro

per

ro

le f

or

com

pu

tati

on

al

neu

rosc

ien

ce?

(c

on

t’)

Com

puta

tional

neu

rosc

ience

pro

pose

s to

fin

d m

eanin

g a

nd i

nte

nt

in t

he

form

and d

ynam

ics

of

neu

ral

syst

ems.

w

ww

.cyb

erti

me.

net

/~aj

go

od

/ad

den

dum

.htm

l -

53

k

Page 7: uroscience Welcome to CSE2330 Introduction to …

Len

nar

t G

ust

afss

on pag

e

Cours

e note

s C

SE

2330

7

If y

ou

th

ink

th

at’

s b

oa

stfu

l, c

on

sid

er t

he

foll

ow

ing

: R

ose

nbla

tt, in

ven

tor

of

the

per

ceptr

on:

It i

s si

gnif

ican

t th

at t

he

indiv

idual

ele

men

ts, or

cell

s, o

f a

[bio

logic

al]

ner

ve

net

work

hav

e nev

er

bee

n d

emonst

rate

d t

o p

oss

ess

any

spec

ific

ally

psy

cholo

gic

al f

unct

ions,

such

as

“mem

ory

”,

“aw

aren

ess”

, or

“inte

llig

ence

”.

Such

pro

per

ties

, th

eref

ore

, pre

sum

ably

res

ide

in t

he

org

aniz

atio

n a

nd f

unct

ionin

g o

f th

e net

work

as a

whole

, ra

ther

than

in i

ts e

lem

enta

ry p

arts

.

In o

rder

to u

nder

stan

d h

ow

the

bra

in w

ork

s, i

t th

us

bec

om

es n

eces

sary

to i

nves

tigat

e th

e

conse

quen

ces

of

com

bin

ing s

imple

neu

ral

elem

ents

in t

opolo

gic

al o

rgan

izat

ions

anal

ogous

to

that

of

the

bra

in.

We

are

ther

efore

inte

rest

ed i

n t

he

gen

eral

cla

ss o

f su

ch n

etw

ork

s, w

hic

h i

ncl

udes

the

bra

in a

s a

spec

ial

clas

s.

Page 8: uroscience Welcome to CSE2330 Introduction to …

Len

nar

t G

ust

afss

on pag

e

Cours

e note

s C

SE

2330

8

So

me

oth

er p

oss

ible

vie

ws

on

co

mp

uta

tio

na

l n

euro

scie

nce

P

icas

so

S

alvad

or

Dal

i

Len

nar

t G

ust

afss

on C

ours

e note

s C

SE

2330

P

age

3

Page 9: uroscience Welcome to CSE2330 Introduction to …

Len

nar

t G

ust

afss

on pag

e

Cours

e note

s C

SE

2330

9

Wh

at

is a

th

eory

go

od

for?

Lots

of

fact

s ar

e know

n f

rom

exper

imen

ts.

A t

heo

ry o

ffer

s

a w

ay t

o r

elat

e th

ese

fact

s to

eac

h o

ther

(a

“theo

reti

cal

fram

ework

”)

see

som

e fa

cts

as c

onse

quen

ces

of

oth

er f

acts

a w

ay t

o p

redic

t th

e outc

om

e fr

om

new

exper

imen

ts

A s

cien

ce a

ssum

es t

he

exis

tence

of

a th

eory

.

A g

ood t

heo

ry i

s a

ver

y p

ract

ical

thin

g.

A g

ood t

heo

ry s

hould

be

expre

ssed

in a

“co

mpute

r m

odel

”, t

o a

llow

for

“com

pute

r

exper

imen

ts”.

Page 10: uroscience Welcome to CSE2330 Introduction to …

Len

nar

t G

ust

afss

on pag

e

Cours

e note

s C

SE

2330

10

Wh

at

fact

s a

bo

ut

the

cen

tra

l n

erv

ou

s sy

stem

do

we

incl

ud

e in

a t

heo

ry?

(or

may

be

rath

er m

od

el)

Fac

ts a

bout

the

synap

se

the

neu

ron

fi

ring r

ule

s

pla

stic

ity

rule

s

Page 11: uroscience Welcome to CSE2330 Introduction to …

Len

nar

t G

ust

afss

on pag

e

Cours

e note

s C

SE

2330

11

We

sho

uld

in

clu

de

fact

s a

bo

ut

(i.e

. m

od

el)

the

con

nec

tiv

ity

am

on

g n

euro

ns

org

an

ized

In

six

hori

zonta

l la

yer

s (i

n c

ereb

ral

cort

ex)

in

mil

lions

of

ver

tica

l m

inic

olu

mns

per

pen

dic

ula

r to

the

six l

ayer

s

in

mac

roco

lum

ns

com

pri

sed o

f a

num

ber

of

min

icolu

mns

in

lar

ger

str

uct

ure

s in

the

neo

cort

ex

in

oth

er s

truct

ure

s in

, e.

g. ce

rebel

lum

but

we

do a

poor

job o

f it

… a

good o

pport

unit

y f

or

fundam

enta

l re

sear

ch !

Page 12: uroscience Welcome to CSE2330 Introduction to …

Len

nar

t G

ust

afss

on pag

e

Cours

e note

s C

SE

2330

12

Arr

an

gin

g t

he

ner

vo

us

syst

em i

n a

hie

rarc

hy

of

stu

dy

acc

ord

ing

to

Ly

tto

n:

ion

s

tran

smit

ters

an

d r

ecep

tors

spin

es,

den

dri

tes

and

sy

nap

ses

neu

ron

s

net

wo

rks

syst

ems

beh

avio

r o

r th

ou

gh

t

Page 13: uroscience Welcome to CSE2330 Introduction to …

Len

nar

t G

ust

afss

on pag

e

Cours

e note

s C

SE

2330

13

Lev

els

of

org

an

iza

tio

n a

cco

rdin

g t

o T

rap

pen

ber

g

(in T

.P.T

rappen

ber

g,

Fundam

enta

ls o

f C

om

puta

tional

Neu

rosc

ience

, O

xfo

rd U

niv

ersi

ty P

ress

)

Page 14: uroscience Welcome to CSE2330 Introduction to …

Len

nar

t G

ust

afss

on pag

e

Cours

e note

s C

SE

2330

14

Bu

t, a

ma

zin

gly

, w

e k

no

w t

ha

t V

ern

on

Mo

un

tca

stle

wa

s ri

gh

t in

19

57

:

“What

ever

the

level

in

the

pro

cess

ing h

iera

rchy

,

and t

he

par

ticu

lar

task

ther

e is

a c

om

mon

arch

itec

ture

: th

e neu

ral

colu

mns

(min

i- a

nd

mac

roco

lum

ns)

” O

nly

rar

ely

is

this

know

ledge

inco

rpora

ted

into

model

s!

Fro

m M

ountc

astl

e: ”

Th

e co

lum

nar

org

aniz

atio

n o

f th

e

neo

cort

ex”,

Bra

in 1

997,

pp. 701-7

22

Page 15: uroscience Welcome to CSE2330 Introduction to …

Len

nar

t G

ust

afss

on pag

e

Cours

e note

s C

SE

2330

15

Ch

ap

ter

1,

Intr

od

uct

ion

, in

Ly

tto

n

T

his

chap

ter

is

w

ritt

en i

n a

good m

ood

(im

med

iate

ly o

bvio

us)

fu

ll o

f in

sights

(w

ill

hopef

ull

y g

radual

ly b

ecom

e cl

ear)

en

coura

ges

you t

o b

elie

ve

this

is

the

stuff

for

the

futu

re

bet

ter

read

by

the

studen

t th

an t

old

by

the

lect

ure

r

T

her

efo

re:

ple

ase

read

an

d e

njo

y u

nti

l nex

t le

cture

!


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