Jäncke L
Department of Psychobiology and Psychocybernetics, Heinrich-Heine-University, Düsseldorf, Germany.
Int J Neurosci. 1994 Jan-Feb;74(1-4):71-7. doi: 10.3109/00207459408987230.
The effects of hemispheric preactivation on dichotic listening performance were investigated in a sample of 45 right-handed male adults. The dichotic stimuli (/ka/, /ta/, /pa/, /ga/, /da/ and /ba/) were presented under three conditions: prior to the test session and during test pauses subjects were confronted with (1) verbal or (2) spatial tasks, and (3) in a control session subjects received no prior task. It was shown that recall accuracy from the right ear was significantly increased when subjects performed verbal tasks prior to the experiment as compared to those experimental conditions in which subjects had to perform a spatial or no special task. Left ear scores were unaffected by these manipulations. The results suggest that verbal tasks performed prior to the dichotic listening experiment primes the hemisphere for verbal stimuli, resulting in a superior dichotic listening performance. Possible consequences for dichotic listening research are discussed.
在45名右利手成年男性样本中，研究了半球预激活对双耳分听表现的影响。双耳刺激（/ka/、/ta/、/pa/、/ga/、/da/和/ba/）在三种条件下呈现：在测试阶段之前以及测试暂停期间，受试者面临（1）语言任务或（2）空间任务，并且（3）在对照阶段，受试者不接受先前任务。结果表明，与受试者必须执行空间任务或无特定任务的实验条件相比，当受试者在实验前执行语言任务时，右耳的回忆准确率显著提高。左耳得分不受这些操作的影响。结果表明，在双耳分听实验之前执行的语言任务会使半球对语言刺激产生预激活，从而导致更好的双耳分听表现。讨论了双耳分听研究的可能后果。
