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Ch. 23. Wiring the Brain Bear et al., Neuroscience: Exploring the Brain, 3 rd ed., Lippincott Williams & Wilkins, 2006, pp 690-723.

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Page 1: Ch. 23. - Ulsanocw.ulsan.ac.kr/OCWData/2010/02/E01453-01/LectureNotes...NMDA receptors activated by simultaneous presynaptic and postsynaptic activity Bear et al., Neuroscience: Exploring

Ch. 23.Wiring the Brain

Bear et al., Neuroscience: Exploring the Brain, 3rd ed., Lippincott Williams & Wilkins, 2006, pp 690-723.

Page 2: Ch. 23. - Ulsanocw.ulsan.ac.kr/OCWData/2010/02/E01453-01/LectureNotes...NMDA receptors activated by simultaneous presynaptic and postsynaptic activity Bear et al., Neuroscience: Exploring

NeurogenesisSynaptogenesisSynaptic remodeling

Bear et al., Neuroscience: Exploring the Brain, 3rd ed., Lippincott Williams & Wilkins, 2006, p 690.

Page 3: Ch. 23. - Ulsanocw.ulsan.ac.kr/OCWData/2010/02/E01453-01/LectureNotes...NMDA receptors activated by simultaneous presynaptic and postsynaptic activity Bear et al., Neuroscience: Exploring

Bear et al., Neuroscience: Exploring the Brain, 3rd ed., Lippincott Williams & Wilkins, 2006, p 692.

Page 4: Ch. 23. - Ulsanocw.ulsan.ac.kr/OCWData/2010/02/E01453-01/LectureNotes...NMDA receptors activated by simultaneous presynaptic and postsynaptic activity Bear et al., Neuroscience: Exploring

Bear et al., Neuroscience: Exploring the Brain, 3rd ed., Lippincott Williams & Wilkins, 2006, p 691.

Adult neurogenesis

Page 5: Ch. 23. - Ulsanocw.ulsan.ac.kr/OCWData/2010/02/E01453-01/LectureNotes...NMDA receptors activated by simultaneous presynaptic and postsynaptic activity Bear et al., Neuroscience: Exploring

Distribution of cell constituents in precursor cells

Bear et al., Neuroscience: Exploring the Brain, 2nd ed., Lippincott Williams & Wilkins, 2001, p 709.

Page 6: Ch. 23. - Ulsanocw.ulsan.ac.kr/OCWData/2010/02/E01453-01/LectureNotes...NMDA receptors activated by simultaneous presynaptic and postsynaptic activity Bear et al., Neuroscience: Exploring

Bear et al., Neuroscience: Exploring the Brain, 2nd ed., Lippincott Williams & Wilkins, 2001, p 710.

Page 7: Ch. 23. - Ulsanocw.ulsan.ac.kr/OCWData/2010/02/E01453-01/LectureNotes...NMDA receptors activated by simultaneous presynaptic and postsynaptic activity Bear et al., Neuroscience: Exploring

Inside-out development of the cortex

Bear et al., Neuroscience: Exploring the Brain, 3rd ed., Lippincott Williams & Wilkins, 2006, p 695.

Page 8: Ch. 23. - Ulsanocw.ulsan.ac.kr/OCWData/2010/02/E01453-01/LectureNotes...NMDA receptors activated by simultaneous presynaptic and postsynaptic activity Bear et al., Neuroscience: Exploring

Differentiation of a neuroblast into a neuron

Bear et al., Neuroscience: Exploring the Brain, 3rd ed., Lippincott Williams & Wilkins, 2006, p 696.

Page 9: Ch. 23. - Ulsanocw.ulsan.ac.kr/OCWData/2010/02/E01453-01/LectureNotes...NMDA receptors activated by simultaneous presynaptic and postsynaptic activity Bear et al., Neuroscience: Exploring

Synaptogenesis1) Pathway selection2) Target selection3) Address selection

Bear et al., Neuroscience: Exploring the Brain, 3rd ed., Lippincott Williams & Wilkins, 2006,pp 697.

Page 10: Ch. 23. - Ulsanocw.ulsan.ac.kr/OCWData/2010/02/E01453-01/LectureNotes...NMDA receptors activated by simultaneous presynaptic and postsynaptic activity Bear et al., Neuroscience: Exploring

Growth cone of the growing axon tip

Bear et al., Neuroscience: Exploring the Brain, 3rd ed., Lippincott Williams & Wilkins, 2006, p 698.

Page 11: Ch. 23. - Ulsanocw.ulsan.ac.kr/OCWData/2010/02/E01453-01/LectureNotes...NMDA receptors activated by simultaneous presynaptic and postsynaptic activity Bear et al., Neuroscience: Exploring

Fasciculationtract

Bear et al., Neuroscience: Exploring the Brain, 3rd ed., Lippincott Williams & Wilkins, 2006, p 699.

Page 12: Ch. 23. - Ulsanocw.ulsan.ac.kr/OCWData/2010/02/E01453-01/LectureNotes...NMDA receptors activated by simultaneous presynaptic and postsynaptic activity Bear et al., Neuroscience: Exploring

Axon guidance:Guidance cuesChemoattractantChemorepellent Chemoattractant

ChemorepellentEx) ephrines

Bear et al., Neuroscience: Exploring the Brain, 3rd ed., Lippincott Williams & Wilkins, 2006, p 700.

Page 13: Ch. 23. - Ulsanocw.ulsan.ac.kr/OCWData/2010/02/E01453-01/LectureNotes...NMDA receptors activated by simultaneous presynaptic and postsynaptic activity Bear et al., Neuroscience: Exploring

ephrines

Establishing retinotopy in the frog retinotectal projection

Bear et al., Neuroscience: Exploring the Brain, 3rd ed., Lippincott Williams & Wilkins, 2006, p 703.

Page 14: Ch. 23. - Ulsanocw.ulsan.ac.kr/OCWData/2010/02/E01453-01/LectureNotes...NMDA receptors activated by simultaneous presynaptic and postsynaptic activity Bear et al., Neuroscience: Exploring

Formation of a neuromuscular synapse

Bear et al., Neuroscience: Exploring the Brain, 3rd ed., Lippincott Williams & Wilkins, 2006, p 704.

Page 15: Ch. 23. - Ulsanocw.ulsan.ac.kr/OCWData/2010/02/E01453-01/LectureNotes...NMDA receptors activated by simultaneous presynaptic and postsynaptic activity Bear et al., Neuroscience: Exploring

Matching inputs with targets by selective cell death

Bear et al., Neuroscience: Exploring the Brain, 3rd ed., Lippincott Williams & Wilkins, 2006, p 706.

Page 16: Ch. 23. - Ulsanocw.ulsan.ac.kr/OCWData/2010/02/E01453-01/LectureNotes...NMDA receptors activated by simultaneous presynaptic and postsynaptic activity Bear et al., Neuroscience: Exploring

Bear et al., Neuroscience: Exploring the Brain, 3rd ed., Lippincott Williams & Wilkins, 2006, p 708.

Synapse elimination

Page 17: Ch. 23. - Ulsanocw.ulsan.ac.kr/OCWData/2010/02/E01453-01/LectureNotes...NMDA receptors activated by simultaneous presynaptic and postsynaptic activity Bear et al., Neuroscience: Exploring

Synaptic rearrangement

Bear et al., Neuroscience: Exploring the Brain, 3rd ed., Lippincott Williams & Wilkins, 2006, p 709.

Page 18: Ch. 23. - Ulsanocw.ulsan.ac.kr/OCWData/2010/02/E01453-01/LectureNotes...NMDA receptors activated by simultaneous presynaptic and postsynaptic activity Bear et al., Neuroscience: Exploring

Plasticity at Hebb synapse

Bear et al., Neuroscience: Exploring the Brain, 3rd ed., Lippincott Williams & Wilkins, 2006, p 710.

Page 19: Ch. 23. - Ulsanocw.ulsan.ac.kr/OCWData/2010/02/E01453-01/LectureNotes...NMDA receptors activated by simultaneous presynaptic and postsynaptic activity Bear et al., Neuroscience: Exploring

Bear et al., Neuroscience: Exploring the Brain, 2nd ed., Lippincott Williams & Wilkins, 2001, p 725.

Segregation of ocular dominance columns in cat striate cortex

Page 20: Ch. 23. - Ulsanocw.ulsan.ac.kr/OCWData/2010/02/E01453-01/LectureNotes...NMDA receptors activated by simultaneous presynaptic and postsynaptic activity Bear et al., Neuroscience: Exploring

Modification of ocular dominance stripes after monocular deprivation

Normal

Monocularly deprived

Bear et al., Neuroscience: Exploring the Brain, 3rd ed., Lippincott Williams & Wilkins, 2006, p 712.

Page 21: Ch. 23. - Ulsanocw.ulsan.ac.kr/OCWData/2010/02/E01453-01/LectureNotes...NMDA receptors activated by simultaneous presynaptic and postsynaptic activity Bear et al., Neuroscience: Exploring

Synaptic convergence at layers 2 and 3

S

S C

S: segregatedC: converged

Bear et al., Neuroscience: Exploring the Brain, 2nd ed., Lippincott Williams & Wilkins, 2001, p 729.

Page 22: Ch. 23. - Ulsanocw.ulsan.ac.kr/OCWData/2010/02/E01453-01/LectureNotes...NMDA receptors activated by simultaneous presynaptic and postsynaptic activity Bear et al., Neuroscience: Exploring

Bear et al., Neuroscience: Exploring the Brain, 2nd ed., Lippincott Williams & Wilkins, 2001, p 729.

Page 23: Ch. 23. - Ulsanocw.ulsan.ac.kr/OCWData/2010/02/E01453-01/LectureNotes...NMDA receptors activated by simultaneous presynaptic and postsynaptic activity Bear et al., Neuroscience: Exploring

Effects of strabismus on cortical binocularity

normal

strabismus

Bear et al., Neuroscience: Exploring the Brain, 3rd ed., Lippincott Williams & Wilkins, 2006, p 712.

Page 24: Ch. 23. - Ulsanocw.ulsan.ac.kr/OCWData/2010/02/E01453-01/LectureNotes...NMDA receptors activated by simultaneous presynaptic and postsynaptic activity Bear et al., Neuroscience: Exploring

Dependence of plasticity of binocular connections on modulatory inputs

Bear et al., Neuroscience: Exploring the Brain, 3rd ed., Lippincott Williams & Wilkins, 2006, p 716.

Page 25: Ch. 23. - Ulsanocw.ulsan.ac.kr/OCWData/2010/02/E01453-01/LectureNotes...NMDA receptors activated by simultaneous presynaptic and postsynaptic activity Bear et al., Neuroscience: Exploring

Neurons that fire together wire together.Neurons that fire out of synchronization lose their link.

Excitatory synaptic transmission in the immature visual system

Bear et al., Neuroscience: Exploring the Brain, 3rd ed., Lippincott Williams & Wilkins, 2006, p 717.

Page 26: Ch. 23. - Ulsanocw.ulsan.ac.kr/OCWData/2010/02/E01453-01/LectureNotes...NMDA receptors activated by simultaneous presynaptic and postsynaptic activity Bear et al., Neuroscience: Exploring

NMDA receptors activated by simultaneous presynaptic and postsynaptic activity

Bear et al., Neuroscience: Exploring the Brain, 3rd ed., Lippincott Williams & Wilkins, 2006, p 718.

Page 27: Ch. 23. - Ulsanocw.ulsan.ac.kr/OCWData/2010/02/E01453-01/LectureNotes...NMDA receptors activated by simultaneous presynaptic and postsynaptic activity Bear et al., Neuroscience: Exploring

The lasting synaptic effects of strong NMDA receptor activation

Bear et al., Neuroscience: Exploring the Brain, 3rd ed., Lippincott Williams & Wilkins, 2006, p 719.

Page 28: Ch. 23. - Ulsanocw.ulsan.ac.kr/OCWData/2010/02/E01453-01/LectureNotes...NMDA receptors activated by simultaneous presynaptic and postsynaptic activity Bear et al., Neuroscience: Exploring

Bear et al., Neuroscience: Exploring the Brain, 2nd ed., Lippincott Williams & Wilkins, 2001, p 736.