Interocular transfer of pattern discrimination learning in chicks

Unihemispheric evidence accumulation in pigeons.

“…This lack of interhemispheric transfer is in line with earlier findings, pointing out that the absence of a corpus callosum restrains or reduces the transfer of information from one hemisphere to the other in pigeons (Nottelmann et al, 2002;Watanabe & Weis, 1984;Xiao & Güntürkün, 2009) and chicks (Gaston, 1984). The present data show that the absence of a corpus callosum in birds 312 WITTEK ET AL.…”

Lateralized Interhemispheric Transfer of Color Cues: Evidence for Dynamic Coding Principles of Visual Lateralization in Pigeons

“…This has been shown for a one-trial passive-avoidance bead task (Sandi et al, 1993;Rose, 1991), an operant visual pattern-discrimination task (Gaston, 1984), as well as for imprinting studies (Horn, 1991). Thus, a similar kind of interocular transfer of a visual discrimination was found in avian species from two different orders.…”

“…Analogous to IOT results in pigeons, there are dissenting findings in chicks caused by procedural variations within experimental designs. IOT was successful in a pattern-discrimination task when rewarded with food (Gaston, 1984), but not when reinforced with warm air (Gaston, 1979). This very short overview shows that cerebral asymmetries but also a multitude of further variables determine if interhemispheric transmission occurs.…”

Limits of intraocular and interocular transfer in pigeons

“…Some experimental findings suggest that other characteristics of the task, such as biological relevance, type of reinforcement, or trained response, may affect interocular transfer. For instance, transfer of information was absent in heat reinforcement, but it was present in the same task when using food reinforcement [9]. Moreover, interocular transfer in pigeons was found in colour discrimination, but it was not observed in the motor response required to show the colour discrimination [43].…”