Convergence of the visual field split: hemispheric modeling of face and object recognition.
Convergence of the visual field split: hemispheric modeling of face and object recognition.
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DOI：
10.1162/jocn.2008.20162
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发表时间：
2008-12
影响因子：
3.2
通讯作者：
Cottrell GW
中科院分区：
文献类型：
--
作者：
Hsiao JH;Shieh DX;Cottrell GW
解剖学证据表明，我们的视野最初沿着垂直中线分裂，并对侧投射到不同的半球。目前尚不清楚分裂的信息在哪个处理阶段收敛。在本研究中，我们采用频率双重滤波（DFF）理论对视野分割进行建模；该理论假设右半球/低频偏倚。我们比较了三种不同收敛时间的认知架构，并检验了它们的认知合理性，以解释在人类数据中观察到的面部感知中的左侧偏倚效应。我们证明了早期收敛模型未能显示左侧偏置效应。因此，该模型表明，趋同可能发生在中间或后期阶段，至少在两个半球分别提取/编码信息之后，这一事实在认知过程的计算建模中经常被忽视。比较解剖学数据表明，这种导致两个半球频率偏差差异的独立编码过程可能从V1到V3a和V4v区域的水平进行，并且至少在枕侧区之后收敛。在我们的模型中，左侧偏置效应在greble识别中也被观察到；因此，该模型也提供了关于左侧偏倚效应是否也可能在（专业水平）对象识别中观察到的可测试的预测。
Anatomical evidence shows that our visual field is initially split along the vertical midline and contralaterally projected to different hemispheres. It remains unclear at which processing stage the split information converges. In the current study, we applied the Double Filtering by Frequency (DFF) theory to modeling the visual field split; the theory assumes a right-hemisphere/low-frequency bias. We compared three cognitive architectures with different timings of convergence and examined their cognitive plausibility to account for the left-side bias effect in face perception observed in human data. We show that the early convergence model failed to show the left-side bias effect. The modeling, hence, suggests that the convergence may take place at an intermediate or late stage, at least after information has been extracted/encoded separately in the two hemispheres, a fact that is often overlooked in computational modeling of cognitive processes. Comparative anatomical data suggest that this separate encoding process that results in differential frequency biases in the two hemispheres may be engaged from V1 up to the level of area V3a and V4v, and converge at least after the lateral occipital region. The left-side bias effect in our model was also observed in Greeble recognition; the modeling, hence, also provides testable predictions about whether the left-side bias effect may also be observed in (expertise-level) object recognition.
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DOI：
10.3758/bf03213093
发表时间：
1996-05-01
期刊：
PERCEPTION & PSYCHOPHYSICS
影响因子：
--
作者：
Costen, NP;Parker, DM;Craw, I
通讯作者：
Craw, I
影响因子：
3.2
作者：
Gauthier, I;Tarr, MJ;Anderson, AW
通讯作者：
Anderson, AW
影响因子：
2.5
作者：
Brysbaert, M
通讯作者：
Brysbaert, M
影响因子：
3.2
作者：
Lavidor, M;Walsh, V
通讯作者：
Walsh, V
影响因子：
7.8
作者：
Dailey, MN;Cottrell, GW
通讯作者：
Cottrell, GW