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Neurophysiological evidence for crossmodal (face-name) person-identity representation in the human left ventral temporal cortex.
PLOS Biology ( IF 9.8 ) Pub Date : 2020-04-03 , DOI: 10.1371/journal.pbio.3000659 Angélique Volfart 1, 2 , Jacques Jonas 1, 3 , Louis Maillard 1, 3 , Sophie Colnat-Coulbois 1, 4 , Bruno Rossion 1, 2, 3
PLOS Biology ( IF 9.8 ) Pub Date : 2020-04-03 , DOI: 10.1371/journal.pbio.3000659 Angélique Volfart 1, 2 , Jacques Jonas 1, 3 , Louis Maillard 1, 3 , Sophie Colnat-Coulbois 1, 4 , Bruno Rossion 1, 2, 3
Affiliation
Putting a name to a face is a highly common activity in our daily life that greatly enriches social interactions. Although this specific person-identity association becomes automatic with learning, it remains difficult and can easily be disrupted in normal circumstances or neurological conditions. To shed light on the neural basis of this important and yet poorly understood association between different input modalities in the human brain, we designed a crossmodal frequency-tagging paradigm coupled to brain activity recording via scalp and intracerebral electroencephalography. In Experiment 1, 12 participants were presented with variable pictures of faces and written names of a single famous identity at a 4-Hz frequency rate while performing an orthogonal task. Every 7 items, another famous identity appeared, either as a face or a name. Robust electrophysiological responses were found exactly at the frequency of identity change (i.e., 4 Hz / 7 = 0.571 Hz), suggesting a crossmodal neural response to person identity. In Experiment 2 with twenty participants, two control conditions with periodic changes of identity for faces or names only were added to estimate the contribution of unimodal neural activity to the putative crossmodal face-name responses. About 30% of the response occurring at the frequency of crossmodal identity change over the left occipito-temporal cortex could not be accounted for by the linear sum of unimodal responses. Finally, intracerebral recordings in the left ventral anterior temporal lobe (ATL) in 7 epileptic patients tested with this paradigm revealed a small number of "pure" crossmodal responses, i.e., with no response to changes of identity for faces or names only. Altogether, these observations provide evidence for integration of verbal and nonverbal person identity-specific information in the human brain, highlighting the contribution of the left ventral ATL in the automatic retrieval of face-name identity associations.
中文翻译:
在人类左腹颞皮层中的跨模式(面部名称)人身份表示的神经生理证据。
在我们的日常生活中,举一个名字是一个非常普遍的活动,它极大地丰富了社交互动。尽管这种特定的人与身份的关联随着学习而变得自动,但是它仍然很困难,并且在正常情况或神经系统状况下很容易被破坏。为了阐明人脑中不同输入方式之间这种重要但尚未充分理解的关联的神经基础,我们设计了一种交叉模式频率标签范例,该方式通过头皮和脑内脑电图记录大脑活动。在实验1中,在执行正交任务时,以4 Hz的频率向12位参与者展示了面孔的可变图片和单个著名身份的书面姓名。每隔7个项目,就会出现另一个著名的身份,无论是面孔还是名字。确切地在身份改变的频率(即4 Hz / 7 = 0.571 Hz)下发现了强大的电生理反应,这表明对人的身份有一种跨模态的神经反应。在有二十名参与者的实验2中,添加了两个控制条件,这些控制条件仅具有针对面部或名称的身份周期性变化,以估计单峰神经活动对假定的跨峰面部名称响应的贡献。单峰响应的线性总和不能解释在左枕颞颞皮层上以交叉峰身份变化的频率发生的响应的大约30%。最后,在以这种范例测试的7名癫痫患者中,左腹前颞叶(ATL)的脑内记录显示出少量的“纯”交叉模式反应,即 仅对人脸或姓名的身份更改无反应。总而言之,这些观察结果为在人类大脑中整合言语和非言语身份特定信息提供了证据,突显了左腹ATL在自动检索面部名称身份关联中的作用。
更新日期:2020-04-03
中文翻译:
在人类左腹颞皮层中的跨模式(面部名称)人身份表示的神经生理证据。
在我们的日常生活中,举一个名字是一个非常普遍的活动,它极大地丰富了社交互动。尽管这种特定的人与身份的关联随着学习而变得自动,但是它仍然很困难,并且在正常情况或神经系统状况下很容易被破坏。为了阐明人脑中不同输入方式之间这种重要但尚未充分理解的关联的神经基础,我们设计了一种交叉模式频率标签范例,该方式通过头皮和脑内脑电图记录大脑活动。在实验1中,在执行正交任务时,以4 Hz的频率向12位参与者展示了面孔的可变图片和单个著名身份的书面姓名。每隔7个项目,就会出现另一个著名的身份,无论是面孔还是名字。确切地在身份改变的频率(即4 Hz / 7 = 0.571 Hz)下发现了强大的电生理反应,这表明对人的身份有一种跨模态的神经反应。在有二十名参与者的实验2中,添加了两个控制条件,这些控制条件仅具有针对面部或名称的身份周期性变化,以估计单峰神经活动对假定的跨峰面部名称响应的贡献。单峰响应的线性总和不能解释在左枕颞颞皮层上以交叉峰身份变化的频率发生的响应的大约30%。最后,在以这种范例测试的7名癫痫患者中,左腹前颞叶(ATL)的脑内记录显示出少量的“纯”交叉模式反应,即 仅对人脸或姓名的身份更改无反应。总而言之,这些观察结果为在人类大脑中整合言语和非言语身份特定信息提供了证据,突显了左腹ATL在自动检索面部名称身份关联中的作用。