Faculty Opinions recommendation of Representational drift in primary olfactory cortex.

2021 ◽  
Author(s):  
Noam Ziv
Keyword(s):  
Olfactory Cortex ◽  
Primary Olfactory Cortex

Disorders of the Cranial Nerves and Brainstem

2021 ◽  
pp. 851-861
Author(s):  
Kelly D. Flemming
Keyword(s):  
Olfactory Bulb ◽  
Olfactory Receptor ◽  
Cranial Nerves ◽  
Olfactory Nerve ◽  
Mitral Cell ◽  
Olfactory Cortex ◽  
Olfactory Receptor Cells ◽  
Receptor Cells ◽  
Clinical Disorders ◽  
Primary Olfactory Cortex

This chapter briefly repeats key anatomic characteristics and then reviews clinical disorders affecting each cranial nerve in addition to the brainstem. More specifically, this chapter covers cranial nerves I, V, VII, and IX through XII plus the brainstem. The olfactory nerve is a special visceral afferent nerve that functions in the sense of smell. The axons of the olfactory receptor cells within the nasal cavity extend through the cribriform plate to the olfactory bulb. These olfactory receptor cell axons synapse with mitral cells in the olfactory bulb. Mitral cell axons project to the primary olfactory cortex and amygdala. The olfactory cortex interconnects with various autonomic and visceral centers.

Time Course of Odorant-Induced Activation in the Human Primary Olfactory Cortex

2000 ◽  
Vol 83 (1) ◽  
pp. 537-551 ◽  
Author(s):  
Noam Sobel ◽  
Vivek Prabhakaran ◽  
Zuo Zhao ◽  
John E. Desmond ◽  
Gary H. Glover ◽  
...  
Keyword(s):  
Time Course ◽  
Piriform Cortex ◽  
Signal Amplitude ◽  
Olfactory Cortex ◽  
Transient Increase ◽  
Functional Neuroanatomy ◽  
Functional Magnetic Resonance ◽  
Physiological Level ◽  
Temporal Variance ◽  
Primary Olfactory Cortex

Paradoxically, attempts to visualize odorant-induced functional magnetic resonance imaging (fMRI) activation in the human have yielded activations in secondary olfactory regions but not in the primary olfactory cortex-piriform cortex. We show that odorant-induced activation in primary olfactory cortex was not previously made evident with fMRI because of the unique time course of activity in this region: in primary olfactory cortex, odorants induced a strong early transient increase in signal amplitude that then habituated within 30–40 s of odorant presence. This time course of activation seen here in the primary olfactory cortex of the human is almost identical to that recorded electrophysiologically in the piriform cortex of the rat. Mapping activation with analyses that are sensitive to both this transient increase in signal amplitude, and temporal-variance, enabled us to use fMRI to consistently visualize odorant-induced activation in the human primary olfactory cortex. The combination of continued accurate odorant detection at the behavioral level despite primary olfactory cortex habituation at the physiological level suggests that the functional neuroanatomy of the olfactory response may change throughout prolonged olfactory stimulation.

scholarly journals Primary olfactory cortex in autism and epilepsy: increased glial cells in autism

2016 ◽  
Vol 27 (4) ◽  
pp. 437-448 ◽  
Author(s):  
David A. Menassa ◽  
Carolyn Sloan ◽  
Steven A. Chance
Keyword(s):  
Glial Cells ◽  
Olfactory Cortex ◽  
Primary Olfactory Cortex

scholarly journals Chemosensory Convergence on Primary Olfactory Cortex

2012 ◽  
Vol 32 (48) ◽  
pp. 17037-17047 ◽  
Author(s):  
J. X. Maier ◽  
M. Wachowiak ◽  
D. B. Katz
Keyword(s):  
Olfactory Cortex ◽  
Primary Olfactory Cortex

Early cortical histogenesis in the primary olfactory cortex of the mouse

1977 ◽  
Vol 123 (1) ◽  
pp. 27-40 ◽  
Author(s):  
P. Derer ◽  
V.S. Caviness ◽  
R.L. Sidman
Keyword(s):  
Olfactory Cortex ◽  
Primary Olfactory Cortex

The Development of the Cortex and the Functions of its Layers

1931 ◽  
Vol 77 (319) ◽  
pp. 692-700
Author(s):  
C. U. Ariëns Kappers
Keyword(s):  
Olfactory Cortex ◽  
Primary Olfactory Cortex

The functions of the different layers of the neocortex are a matter of great importance to the neurologist.The character of the neocortex and the significance of its different layers are, however, most easily understood when compared with the older forms of cortex, the primary olfactory cortex, which I have called palœocortex, and the secondary olfactory cortex or archicortex.

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