King A J, Palmer A R
Exp Brain Res. 1985;60(3):492-500. doi: 10.1007/BF00236934.
We have investigated the responses of neurones in the guinea-pig superior colliculus to combinations of visual and auditory stimuli. When these stimuli were presented separately, some of these neurones responded only to one modality, others to both and a few neurones reliably to neither. To bimodal stimulation, many of these neurones exhibited some form of cross-modality interaction, the degree and nature of which depended on the relative timing and location of the two stimuli. Facilitatory and inhibitory interactions were observed and, occasionally, both effects were found in the same neurone at different inter-stimulus intervals. Neurones whose responses to visual stimuli were enhanced by an auditory stimulus were found in the superficial layers. Although visual-enhanced and visual-depressed auditory neurones were found throughout the deep layers, the majority of them were recorded in the stratum griseum profundum. Neurones that responded to both visual and auditory stimuli presented separately and gave enhanced or depressed responses to bimodal stimulation were found throughout the deep layers, but were concentrated in the stratum griseum intermediale and extended into the stratum opticum.
我们研究了豚鼠上丘神经元对视觉和听觉刺激组合的反应。当分别呈现这些刺激时，其中一些神经元仅对一种模态有反应，另一些对两种模态都有反应，还有少数神经元对两种模态都无可靠反应。对于双峰刺激，许多这些神经元表现出某种形式的跨模态相互作用，其程度和性质取决于两种刺激的相对时间和位置。观察到了促进性和抑制性相互作用，偶尔，在同一神经元的不同刺激间隔中发现了这两种效应。在浅层发现了对视觉刺激的反应因听觉刺激而增强的神经元。虽然在整个深层都发现了视觉增强型和视觉抑制型听觉神经元，但其中大多数记录于深层灰质层。在整个深层都发现了对分别呈现的视觉和听觉刺激都有反应且对双峰刺激有增强或抑制反应的神经元，但它们集中在中间灰质层并延伸至视层。
