Thus, it is possible that an analogs system of feedback from the mPFC to V1 via the parietal cortex occurs in rodents Figure 7. The amygdala activation observed in the present study is supported by strong projections from the mPFC to the amygdala Vertes, Projections from the amygdala to V1 Senn et al.
It is known that the pulvinar is involved in top-down control of V1 in primates Purushothaman et al. ACh can modulate intracortical connectivity and functional organization Groleau et al. IL is the prefrontal subregion with the strongest reciprocal connections with the HDB. This schematic has been proposed previously by Golmayo et al. However, our present experiments did not detect any cells activated in the HDB, neither cholinergic nor non-cholinergic.
This absence of staining is not due to technical limitation because c-Fos staining has already been shown in BF cells McKenna et al. In agreement, we previously proposed that local neuronal activity in V1 could trigger local release of ACh from surrounding cholinergic axons Laplante et al. Thus, the stimulation of mPFC in our study may have involved cholinergic transmission within V1. This functional connection may be related to visual attention processes. The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.
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Cortex 12, — Purushothaman, G. These studies provide clear evidence of human cortical structures receiving nociceptive input and the modulation of that input by exogenous e. Endogenous and exogenous modulators of potentials evoked by a painful cutaneous laser LEPs. T1 - Endogenous and exogenous modulators of potentials evoked by a painful cutaneous laser LEPs. N2 - Little is known about the specific functions of the human cortical structures receiving nociceptive input, their relationship to various dimensions of pain, and the modulation of these inputs by attention.
AB - Little is known about the specific functions of the human cortical structures receiving nociceptive input, their relationship to various dimensions of pain, and the modulation of these inputs by attention. Endogenous and exogenous modulators of potentials evoked by a painful cutaneous laser LEPs S. School of Medicine. Abstract Little is known about the specific functions of the human cortical structures receiving nociceptive input, their relationship to various dimensions of pain, and the modulation of these inputs by attention. Fingerprint Evoked Potentials. Gyrus Cinguli.
Somatosensory Cortex. Keywords anterior cingulated Human pain insula parietal operculum primary somatic sensory cortex secondary somatic sensory cortex ventral posterior thalamus. In Advances in Functional and Reparative Neurosurgery 99 ed. Acta Neurochirurgica, Supplementum; No. Springer-Verlag Wien. Advances in Functional and Reparative Neurosurgery.