Cortical modulation of spatial and angular tuning maps in the rat thalamus.

Cortical modulation of spatial and angular tuning maps in the rat thalamus. Research Abstract Details 

Research Abstract Table of Contents

Jump to the:

Cortical modulation of spatial and angular tuning maps in the rat thalamus. Abstract Text:

Lu Li,Ford F Ebner,

The massive feedback projections from cortex to the thalamus modulate sensory information transmission in many ways. We investigated the role of corticothalamic feedback projections on the directional selectivity (angular tuning) of neurons in the rat ventral posterior medial (VPM) nucleus to stimulation of their principal whisker. The angular tuning properties of single VPM neurons were compared before and after epochs of electrical stimulation of layer VI feedback neurons in the ipsilateral cortex under urethane anesthesia. Microstimulation of layer VI in "matched" (homologous) barrel columns sharpens the angular tuning curves of single VPM neurons that are tuned to the same direction as the stimulation site in the cortex. Further, microstimulation rotates the angular preference of VPM neurons initially tuned to a different direction toward the direction that cortical neurons prefer. Stimulation in "mismatched" (nonhomologous) barrel columns suppresses responses without consistent effects on angular tuning. We conclude that the primary sensory cortex exerts a significant influence on both spatial and angular tuning maps in the relay nuclei that project to it. The results suggest that the tuning properties of VPM cells in the behaving animal are continually modified to optimize perception of the most salient incoming messages.

Cortical modulation of spatial and angular tuning maps in the rat thalamus. Publishing Authors By Initials

L Li,FF Ebner,

For similar animal structures: vibrissae research abstracts see: animal structures: vibrissae research

PUBMED ID PMID:

MEDLINE DATE:

Cortical modulation of spatial and angular tuning maps in the rat thalamus. Journal Published:

PUBLICATION TYPE: Research Support, N.I.H., Extr

Journal: The Journal of neuroscience : the official journal

VOLUME: 27

Page Numbers: 167-79

Journal Abbreviation: J. Neurosci.

ISSN: 1529-2401

DAY: 3

MONTH: Jan

YEAR: 2007

Cortical modulation of spatial and angular tuning maps in the rat thalamus. Information

Number of References:

LANGUAGE: eng

NlmUniqueID: 8102140

Cortical modulation of spatial and angular tuning maps in the rat thalamus. Keywords Mesh Terms:

KEYWORDS: Vibrissae

MESH TERMS: physiology

Chemical & Substance for Abstract: Cortical modulation of spatial and angular tuning maps in the rat thalamus. Information

Substance Name:

Registry Number:

Grant and Affiliation Information for Cortical modulation of spatial and angular tuning maps in the rat thalamus.

AFFILIATION: Department of Psychology, Vanderbilt University, Nashville, Tennessee 37203, USA.

Country: United States

AGENCY: United States NINDS

GRANT: NS25907

ACRONYM: NS

MEDLINETA: J Neurosci

REFSOURCE:

DATABASENAME:

ACCESSION NUMBER:

Number Hits: 0

Cortical modulation of spatial and angular tuning maps in the rat thalamus Related Publications

• Age of face matters: age-group differences in ratings of young and old faces.
• Balancing bilateral sensory activity: callosal processing modulates sensory transmission through the contralateral thalamus by altering the response threshold.
• Cortical modulation of spatial and angular tuning maps in the rat thalamus.
• Effects of speeds and force fields on submovements during circular manual tracking in humans.
• Finger movements during reach-to-grasp in the monkey: amplitude scaling of a temporal synergy.
• Flavoprotein autofluorescence imaging in the cerebellar cortex in vivo.
• Force field effects on cerebellar Purkinje cell discharge with implications for internal models.
• Functional magnetic resonance imaging of motor, sensory, and posterior parietal cortical areas during performance of sequential typing movements.
• Gestational 2,3,7,8-tetrachlorodibenzo-p-dioxin exposure effects on sensory cortex function.
• Independent control of reflex and volitional EMG modulation during sinusoidal pursuit tracking in humans.
• Induction of high frequency activity in the somatosensory thalamus of rats in vivo results in long-term potentiation of responses in SI cortex.
• Investigations of the Japanese bovine tumour virus (BLV)--its ability to express structural and regulatory BLV proteins.
• Laminar organization of efferent cells in the parietal cortex of the Virginia opossum.
• Long-term outcome of extratemporal epilepsy surgery among 154 adult patients.
• MR venography using an intravascular contrast agent: results from a multicenter phase 2 study of dosage.
• Optic nerve transection affects development and use-dependent plasticity in neocortex of the rat: Quantitative acetylcholinesterase imaging.
• Presurgical seizure frequency and tumoral etiology predict the outcome after extratemporal epilepsy surgery.
• REDUCTION OF AROMATIC KETO ACIDS BY RAT LIVER.
• Rapid plasticity follows whisker pairing in barrel cortex of the awake rat.
• Rate code and temporal code for frequency of whisker stimulation in rat primary and secondary somatic sensory cortex.
• Significance of Chlamydia trachomatis in "abacterial" prostatitis.
• Stimulus frequency processing in awake rat barrel cortex.
• [Lyspafen and acute diarrhoe in pediatry (author's transl)]
• [Medical, social and medicolegal problems of criminal abortion.]
• [Not Available.]
• [Not Available.]
• [The EEG in epilepsy]
• [The pediatric status of the newborn of diabetic mothers]
• [The status in wild and zoo birds of antibodies to selected agents relevant to domestic animals]
• [Trichomoniasis]