Sub-threshold cross-modal sensory interaction in the thalamus: lemniscal auditory response in the medial geniculate nucleus is modulated by somatosensory stimulation

Neuroscience ◽  
2011 ◽  
Vol 174 ◽  
pp. 200-215 ◽  
Author(s):  
T. Donishi ◽  
A. Kimura ◽  
H. Imbe ◽  
I. Yokoi ◽  
Y. Kaneoke
Keyword(s):  
Sensory Interaction ◽  
Somatosensory Stimulation ◽  
Medial Geniculate Nucleus ◽  
Medial Geniculate ◽  
Auditory Response

scholarly journals Input from the medial geniculate nucleus modulates amygdala encoding of fear memory discrimination

2017 ◽  
Vol 24 (9) ◽  
pp. 414-421 ◽  
Author(s):  
Nicole C. Ferrara ◽  
Patrick K. Cullen ◽  
Shane P. Pullins ◽  
Elena K. Rotondo ◽  
Fred J. Helmstetter
Keyword(s):  
Fear Memory ◽  
Medial Geniculate Nucleus ◽  
Medial Geniculate

scholarly journals Selective Corticofugal Modulation on Sound Processing in Auditory Thalamus of Awake Marmosets

2021 ◽  
Author(s):  
Yuanqing Zhang ◽  
Xiaohui Wang ◽  
Lin Zhu ◽  
Siyi Bai ◽  
Rui Li ◽  
...  
Keyword(s):  
Sensory Processing ◽  
Frequency Tuning ◽  
Signal To Noise Ratio ◽  
Medial Geniculate Body ◽  
Primary Auditory Cortex ◽  
Medial Geniculate ◽  
Auditory Response ◽  
Corticofugal Feedback ◽  
Corticothalamic Feedback

Cortical feedback has long been considered crucial for modulation of sensory processing. In the mammalian auditory system, studies have suggested that corticofugal feedback can have excitatory, inhibitory, or both effects on the response of subcortical neurons, leading to controversies regarding the role of corticothalamic influence. This has been further complicated by studies conducted under different brain states. In the current study, we used cryo-inactivation in the primary auditory cortex (A1) to examine the role of corticothalamic feedback on medial geniculate body (MGB) neurons in awake marmosets. The primary effects of A1 inactivation were a frequency-specific decrease in the auditory response of MGB neurons coupled with an increased spontaneous firing rate, which together resulted in a decrease in the signal-to-noise ratio. In addition, we report for the first-time that A1 robustly modulated the long-lasting sustained response of MGB neurons which changed the frequency tuning after A1 inactivation, e.g., neurons with sharp tuning increased tuning bandwidth whereas those with broad tuning decreased tuning bandwidth. Taken together, our results demonstrate that corticothalamic modulation in awake marmosets serves to enhance sensory processing in a way similar to center-surround models proposed in visual and somatosensory systems, a finding which supports common principles of corticothalamic processing across sensory systems.

Transient appearance of tyrosine hydroxylase-immunoreactive non-catecholaminergic neurons in the medial geniculate nucleus of postnatal mice

1996 ◽  
Vol 211 (3) ◽  
pp. 183-186 ◽  
Author(s):  
Ikuko Nagatsu ◽  
Terumi Takeuchi ◽  
Masao Sakai ◽  
Nobuyuki Karasawa ◽  
Yoko Yamawaki ◽  
...  
Keyword(s):  
Tyrosine Hydroxylase ◽  
Medial Geniculate Nucleus ◽  
Catecholaminergic Neurons ◽  
Medial Geniculate
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